view MascotAdapterOnline.xml @ 0:8746354dd6a9 draft

planemo upload for repository https://github.com/galaxyproteomics/tools-galaxyp/tree/master/tools/openms commit fb85d488133bb2b5f483b52b2db0ac66038fafb8
author galaxyp
date Wed, 01 Mar 2017 10:18:37 -0500
parents
children 2e48052e1b95
line wrap: on
line source

<?xml version='1.0' encoding='UTF-8'?>
<!--This is a configuration file for the integration of a tools into Galaxy (https://galaxyproject.org/). This file was automatically generated using CTD2Galaxy.-->
<!--Proposed Tool Section: [Identification]-->
<tool id="MascotAdapterOnline" name="MascotAdapterOnline" version="2.1.0">
  <description>Annotates MS/MS spectra using Mascot.</description>
  <macros>
    <token name="@EXECUTABLE@">MascotAdapterOnline</token>
    <import>macros.xml</import>
  </macros>
  <expand macro="references"/>
  <expand macro="stdio"/>
  <expand macro="requirements"/>
  <command>MascotAdapterOnline

#if $param_in:
  -in $param_in
#end if
#if $param_out:
  -out $param_out
#end if
#if $param_Mascot_parameters_database:
  -Mascot_parameters:database     "$param_Mascot_parameters_database"
#end if
#if $param_Mascot_parameters_enzyme:
  -Mascot_parameters:enzyme     "$param_Mascot_parameters_enzyme"
#end if
#if $param_Mascot_parameters_instrument:
  -Mascot_parameters:instrument     "$param_Mascot_parameters_instrument"
#end if
#if $param_Mascot_parameters_missed_cleavages:
  -Mascot_parameters:missed_cleavages $param_Mascot_parameters_missed_cleavages
#end if
#if $param_Mascot_parameters_precursor_mass_tolerance:
  -Mascot_parameters:precursor_mass_tolerance $param_Mascot_parameters_precursor_mass_tolerance
#end if
#if $param_Mascot_parameters_precursor_error_units:
  -Mascot_parameters:precursor_error_units $param_Mascot_parameters_precursor_error_units
#end if
#if $param_Mascot_parameters_fragment_mass_tolerance:
  -Mascot_parameters:fragment_mass_tolerance $param_Mascot_parameters_fragment_mass_tolerance
#end if
#if $param_Mascot_parameters_fragment_error_units:
  -Mascot_parameters:fragment_error_units $param_Mascot_parameters_fragment_error_units
#end if
#if $param_Mascot_parameters_charges:
  -Mascot_parameters:charges     "$param_Mascot_parameters_charges"
#end if
#if $param_Mascot_parameters_taxonomy:
  -Mascot_parameters:taxonomy     "$param_Mascot_parameters_taxonomy"
#end if

#if $rep_param_Mascot_parameters_fixed_modifications:
-Mascot_parameters:fixed_modifications
  #for token in $rep_param_Mascot_parameters_fixed_modifications:
    #if " " in str(token):
      "$token.param_Mascot_parameters_fixed_modifications"
    #else
      $token.param_Mascot_parameters_fixed_modifications
    #end if
  #end for
#end if

#if $rep_param_Mascot_parameters_variable_modifications:
-Mascot_parameters:variable_modifications
  #for token in $rep_param_Mascot_parameters_variable_modifications:
    #if " " in str(token):
      "$token.param_Mascot_parameters_variable_modifications"
    #else
      $token.param_Mascot_parameters_variable_modifications
    #end if
  #end for
#end if
#if $param_Mascot_parameters_mass_type:
  -Mascot_parameters:mass_type $param_Mascot_parameters_mass_type
#end if
#if $param_Mascot_parameters_number_of_hits:
  -Mascot_parameters:number_of_hits $param_Mascot_parameters_number_of_hits
#end if
#if $param_Mascot_parameters_skip_spectrum_charges:
  -Mascot_parameters:skip_spectrum_charges
#end if
#if $param_Mascot_parameters_email:
  -Mascot_parameters:email     "$param_Mascot_parameters_email"
#end if
#if $param_Mascot_server_hostname:
  -Mascot_server:hostname     "$param_Mascot_server_hostname"
#end if
#if $param_Mascot_server_host_port:
  -Mascot_server:host_port $param_Mascot_server_host_port
#end if
#if $param_Mascot_server_server_path:
  -Mascot_server:server_path     "$param_Mascot_server_server_path"
#end if
#if $param_Mascot_server_timeout:
  -Mascot_server:timeout $param_Mascot_server_timeout
#end if
#if $param_Mascot_server_login:
  -Mascot_server:login
#end if
#if $param_Mascot_server_username:
  -Mascot_server:username     "$param_Mascot_server_username"
#end if
#if $param_Mascot_server_password:
  -Mascot_server:password     "$param_Mascot_server_password"
#end if
#if $param_Mascot_server_use_ssl:
  -Mascot_server:use_ssl
#end if
#if $adv_opts.adv_opts_selector=='advanced':
    #if $adv_opts.param_keep_protein_links:
  -keep_protein_links
#end if
    #if $adv_opts.param_force:
  -force
#end if
    #if $adv_opts.param_Mascot_parameters_search_type:
  -Mascot_parameters:search_type $adv_opts.param_Mascot_parameters_search_type
#end if
    #if $adv_opts.param_Mascot_parameters_special_modifications:
  -Mascot_parameters:special_modifications     "$adv_opts.param_Mascot_parameters_special_modifications"
#end if
    #if $adv_opts.param_Mascot_parameters_search_title:
  -Mascot_parameters:search_title     "$adv_opts.param_Mascot_parameters_search_title"
#end if
    #if $adv_opts.param_Mascot_parameters_username:
  -Mascot_parameters:username     "$adv_opts.param_Mascot_parameters_username"
#end if
    #if $adv_opts.param_Mascot_server_boundary:
  -Mascot_server:boundary     "$adv_opts.param_Mascot_server_boundary"
#end if
    #if $adv_opts.param_Mascot_server_use_proxy:
  -Mascot_server:use_proxy
#end if
    #if $adv_opts.param_Mascot_server_proxy_host:
  -Mascot_server:proxy_host     "$adv_opts.param_Mascot_server_proxy_host"
#end if
    #if $adv_opts.param_Mascot_server_proxy_port:
  -Mascot_server:proxy_port $adv_opts.param_Mascot_server_proxy_port
#end if
    #if $adv_opts.param_Mascot_server_proxy_username:
  -Mascot_server:proxy_username     "$adv_opts.param_Mascot_server_proxy_username"
#end if
    #if $adv_opts.param_Mascot_server_proxy_password:
  -Mascot_server:proxy_password     "$adv_opts.param_Mascot_server_proxy_password"
#end if
    #if $adv_opts.param_Mascot_server_export_params:
  -Mascot_server:export_params     "$adv_opts.param_Mascot_server_export_params"
#end if
    #if $adv_opts.param_Mascot_server_skip_export:
  -Mascot_server:skip_export
#end if
#end if
</command>
  <inputs>
    <param name="param_in" type="data" format="mzml" optional="False" label="input file in mzML format." help="(-in) "/>
    <param name="param_Mascot_parameters_database" type="text" size="30" value="MSDB" label="Name of the sequence database" help="(-database) ">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_parameters_enzyme" type="text" size="30" value="Trypsin" label="The enzyme descriptor to the enzyme used for digestion" help="(-enzyme) (Trypsin is default, None would be best for peptide input or unspecific digestion, for more please refer to your mascot server)">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_parameters_instrument" type="text" size="30" value="Default" label="Instrument definition which specifies the fragmentation rules" help="(-instrument) ">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_parameters_missed_cleavages" type="integer" min="0" optional="True" value="1" label="Number of missed cleavages allowed for the enzyme" help="(-missed_cleavages) "/>
    <param name="param_Mascot_parameters_precursor_mass_tolerance" type="float" min="0.0" optional="True" value="3.0" label="Tolerance of the precursor peaks" help="(-precursor_mass_tolerance) "/>
    <param name="param_Mascot_parameters_precursor_error_units" display="radio" type="select" optional="False" value="Da" label="Units of the precursor mass tolerance" help="(-precursor_error_units) ">
      <option value="%">%</option>
      <option value="ppm">ppm</option>
      <option value="mmu">mmu</option>
      <option value="Da" selected="true">Da</option>
    </param>
    <param name="param_Mascot_parameters_fragment_mass_tolerance" type="float" min="0.0" optional="True" value="0.3" label="Tolerance of the peaks in the fragment spectrum" help="(-fragment_mass_tolerance) "/>
    <param name="param_Mascot_parameters_fragment_error_units" display="radio" type="select" optional="False" value="Da" label="Units of the fragment peaks tolerance" help="(-fragment_error_units) ">
      <option value="mmu">mmu</option>
      <option value="Da" selected="true">Da</option>
    </param>
    <param name="param_Mascot_parameters_charges" type="text" size="30" value="1,2,3" label="Charge states to consider, given as a comma separated list of integers (only used for spectra without precursor charge information)" help="(-charges) ">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_parameters_taxonomy" type="text" size="30" value="All entries" label="Taxonomy specification of the sequences" help="(-taxonomy) ">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <repeat name="rep_param_Mascot_parameters_fixed_modifications" min="0" max="1" title="param_Mascot_parameters_fixed_modifications">
      <param name="param_Mascot_parameters_fixed_modifications" type="select" optional="True" label="List of fixed modifications, according to UniMod definitions" help="(-fixed_modifications) ">
        <option value="2-dimethylsuccinyl (C)">2-dimethylsuccinyl (C)</option>
        <option value="2-monomethylsuccinyl (C)">2-monomethylsuccinyl (C)</option>
        <option value="2-nitrobenzyl (Y)">2-nitrobenzyl (Y)</option>
        <option value="2-succinyl (C)">2-succinyl (C)</option>
        <option value="2HPG (R)">2HPG (R)</option>
        <option value="3-deoxyglucosone (R)">3-deoxyglucosone (R)</option>
        <option value="3-phosphoglyceryl (K)">3-phosphoglyceryl (K)</option>
        <option value="3sulfo (N-term)">3sulfo (N-term)</option>
        <option value="4-ONE (C)">4-ONE (C)</option>
        <option value="4-ONE (H)">4-ONE (H)</option>
        <option value="4-ONE (K)">4-ONE (K)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (C)">4-ONE+Delta:H(-2)O(-1) (C)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (H)">4-ONE+Delta:H(-2)O(-1) (H)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (K)">4-ONE+Delta:H(-2)O(-1) (K)</option>
        <option value="4AcAllylGal (C)">4AcAllylGal (C)</option>
        <option value="ADP-Ribosyl (C)">ADP-Ribosyl (C)</option>
        <option value="ADP-Ribosyl (D)">ADP-Ribosyl (D)</option>
        <option value="ADP-Ribosyl (E)">ADP-Ribosyl (E)</option>
        <option value="ADP-Ribosyl (K)">ADP-Ribosyl (K)</option>
        <option value="ADP-Ribosyl (N)">ADP-Ribosyl (N)</option>
        <option value="ADP-Ribosyl (R)">ADP-Ribosyl (R)</option>
        <option value="ADP-Ribosyl (S)">ADP-Ribosyl (S)</option>
        <option value="AEBS (H)">AEBS (H)</option>
        <option value="AEBS (K)">AEBS (K)</option>
        <option value="AEBS (S)">AEBS (S)</option>
        <option value="AEBS (Y)">AEBS (Y)</option>
        <option value="AEC-MAEC (S)">AEC-MAEC (S)</option>
        <option value="AEC-MAEC (T)">AEC-MAEC (T)</option>
        <option value="AEC-MAEC:2H(4) (S)">AEC-MAEC:2H(4) (S)</option>
        <option value="AEC-MAEC:2H(4) (T)">AEC-MAEC:2H(4) (T)</option>
        <option value="AHA-Alkyne (M)">AHA-Alkyne (M)</option>
        <option value="AHA-Alkyne-KDDDD (M)">AHA-Alkyne-KDDDD (M)</option>
        <option value="AHA-SS (M)">AHA-SS (M)</option>
        <option value="AHA-SS_CAM (M)">AHA-SS_CAM (M)</option>
        <option value="AMTzHexNAc2 (N)">AMTzHexNAc2 (N)</option>
        <option value="AMTzHexNAc2 (S)">AMTzHexNAc2 (S)</option>
        <option value="AMTzHexNAc2 (T)">AMTzHexNAc2 (T)</option>
        <option value="AROD (C)">AROD (C)</option>
        <option value="AccQTag (K)">AccQTag (K)</option>
        <option value="AccQTag (N-term)">AccQTag (N-term)</option>
        <option value="Acetyl (C)">Acetyl (C)</option>
        <option value="Acetyl (H)">Acetyl (H)</option>
        <option value="Acetyl (K)">Acetyl (K)</option>
        <option value="Acetyl (N-term)">Acetyl (N-term)</option>
        <option value="Acetyl (S)">Acetyl (S)</option>
        <option value="Acetyl (T)">Acetyl (T)</option>
        <option value="Acetyl (Y)">Acetyl (Y)</option>
        <option value="Acetyl:13C(2) (K)">Acetyl:13C(2) (K)</option>
        <option value="Acetyl:2H(3) (H)">Acetyl:2H(3) (H)</option>
        <option value="Acetyl:2H(3) (K)">Acetyl:2H(3) (K)</option>
        <option value="Acetyl:2H(3) (N-term)">Acetyl:2H(3) (N-term)</option>
        <option value="Acetyl:2H(3) (S)">Acetyl:2H(3) (S)</option>
        <option value="Acetyl:2H(3) (T)">Acetyl:2H(3) (T)</option>
        <option value="Acetyl:2H(3) (Y)">Acetyl:2H(3) (Y)</option>
        <option value="Acetyldeoxyhypusine (K)">Acetyldeoxyhypusine (K)</option>
        <option value="Acetylhypusine (K)">Acetylhypusine (K)</option>
        <option value="Ahx2+Hsl (C-term)">Ahx2+Hsl (C-term)</option>
        <option value="Ala-&gt;Arg (A)">Ala-&gt;Arg (A)</option>
        <option value="Ala-&gt;Asn (A)">Ala-&gt;Asn (A)</option>
        <option value="Ala-&gt;Asp (A)">Ala-&gt;Asp (A)</option>
        <option value="Ala-&gt;Cys (A)">Ala-&gt;Cys (A)</option>
        <option value="Ala-&gt;Gln (A)">Ala-&gt;Gln (A)</option>
        <option value="Ala-&gt;Glu (A)">Ala-&gt;Glu (A)</option>
        <option value="Ala-&gt;Gly (A)">Ala-&gt;Gly (A)</option>
        <option value="Ala-&gt;His (A)">Ala-&gt;His (A)</option>
        <option value="Ala-&gt;Lys (A)">Ala-&gt;Lys (A)</option>
        <option value="Ala-&gt;Met (A)">Ala-&gt;Met (A)</option>
        <option value="Ala-&gt;Phe (A)">Ala-&gt;Phe (A)</option>
        <option value="Ala-&gt;Pro (A)">Ala-&gt;Pro (A)</option>
        <option value="Ala-&gt;Ser (A)">Ala-&gt;Ser (A)</option>
        <option value="Ala-&gt;Thr (A)">Ala-&gt;Thr (A)</option>
        <option value="Ala-&gt;Trp (A)">Ala-&gt;Trp (A)</option>
        <option value="Ala-&gt;Tyr (A)">Ala-&gt;Tyr (A)</option>
        <option value="Ala-&gt;Val (A)">Ala-&gt;Val (A)</option>
        <option value="Ala-&gt;Xle (A)">Ala-&gt;Xle (A)</option>
        <option value="Amidated (C-term)">Amidated (C-term)</option>
        <option value="Amidine (K)">Amidine (K)</option>
        <option value="Amidine (N-term)">Amidine (N-term)</option>
        <option value="Amidino (C)">Amidino (C)</option>
        <option value="Amino (Y)">Amino (Y)</option>
        <option value="Ammonia-loss (N)">Ammonia-loss (N)</option>
        <option value="Ammonia-loss (N-term C)">Ammonia-loss (N-term C)</option>
        <option value="Ammonium (C-term)">Ammonium (C-term)</option>
        <option value="Ammonium (D)">Ammonium (D)</option>
        <option value="Ammonium (E)">Ammonium (E)</option>
        <option value="Archaeol (C)">Archaeol (C)</option>
        <option value="Arg (N-term)">Arg (N-term)</option>
        <option value="Arg-&gt;Ala (R)">Arg-&gt;Ala (R)</option>
        <option value="Arg-&gt;Asn (R)">Arg-&gt;Asn (R)</option>
        <option value="Arg-&gt;Asp (R)">Arg-&gt;Asp (R)</option>
        <option value="Arg-&gt;Cys (R)">Arg-&gt;Cys (R)</option>
        <option value="Arg-&gt;Gln (R)">Arg-&gt;Gln (R)</option>
        <option value="Arg-&gt;Glu (R)">Arg-&gt;Glu (R)</option>
        <option value="Arg-&gt;GluSA (R)">Arg-&gt;GluSA (R)</option>
        <option value="Arg-&gt;Gly (R)">Arg-&gt;Gly (R)</option>
        <option value="Arg-&gt;His (R)">Arg-&gt;His (R)</option>
        <option value="Arg-&gt;Lys (R)">Arg-&gt;Lys (R)</option>
        <option value="Arg-&gt;Met (R)">Arg-&gt;Met (R)</option>
        <option value="Arg-&gt;Npo (R)">Arg-&gt;Npo (R)</option>
        <option value="Arg-&gt;Orn (R)">Arg-&gt;Orn (R)</option>
        <option value="Arg-&gt;Phe (R)">Arg-&gt;Phe (R)</option>
        <option value="Arg-&gt;Pro (R)">Arg-&gt;Pro (R)</option>
        <option value="Arg-&gt;Ser (R)">Arg-&gt;Ser (R)</option>
        <option value="Arg-&gt;Thr (R)">Arg-&gt;Thr (R)</option>
        <option value="Arg-&gt;Trp (R)">Arg-&gt;Trp (R)</option>
        <option value="Arg-&gt;Tyr (R)">Arg-&gt;Tyr (R)</option>
        <option value="Arg-&gt;Val (R)">Arg-&gt;Val (R)</option>
        <option value="Arg-&gt;Xle (R)">Arg-&gt;Xle (R)</option>
        <option value="Arg-loss (C-term R)">Arg-loss (C-term R)</option>
        <option value="Arg2PG (R)">Arg2PG (R)</option>
        <option value="Argbiotinhydrazide (R)">Argbiotinhydrazide (R)</option>
        <option value="Asn-&gt;Ala (N)">Asn-&gt;Ala (N)</option>
        <option value="Asn-&gt;Arg (N)">Asn-&gt;Arg (N)</option>
        <option value="Asn-&gt;Asp (N)">Asn-&gt;Asp (N)</option>
        <option value="Asn-&gt;Cys (N)">Asn-&gt;Cys (N)</option>
        <option value="Asn-&gt;Gln (N)">Asn-&gt;Gln (N)</option>
        <option value="Asn-&gt;Glu (N)">Asn-&gt;Glu (N)</option>
        <option value="Asn-&gt;Gly (N)">Asn-&gt;Gly (N)</option>
        <option value="Asn-&gt;His (N)">Asn-&gt;His (N)</option>
        <option value="Asn-&gt;Lys (N)">Asn-&gt;Lys (N)</option>
        <option value="Asn-&gt;Met (N)">Asn-&gt;Met (N)</option>
        <option value="Asn-&gt;Phe (N)">Asn-&gt;Phe (N)</option>
        <option value="Asn-&gt;Pro (N)">Asn-&gt;Pro (N)</option>
        <option value="Asn-&gt;Ser (N)">Asn-&gt;Ser (N)</option>
        <option value="Asn-&gt;Thr (N)">Asn-&gt;Thr (N)</option>
        <option value="Asn-&gt;Trp (N)">Asn-&gt;Trp (N)</option>
        <option value="Asn-&gt;Tyr (N)">Asn-&gt;Tyr (N)</option>
        <option value="Asn-&gt;Val (N)">Asn-&gt;Val (N)</option>
        <option value="Asn-&gt;Xle (N)">Asn-&gt;Xle (N)</option>
        <option value="Asp-&gt;Ala (D)">Asp-&gt;Ala (D)</option>
        <option value="Asp-&gt;Arg (D)">Asp-&gt;Arg (D)</option>
        <option value="Asp-&gt;Asn (D)">Asp-&gt;Asn (D)</option>
        <option value="Asp-&gt;Cys (D)">Asp-&gt;Cys (D)</option>
        <option value="Asp-&gt;Gln (D)">Asp-&gt;Gln (D)</option>
        <option value="Asp-&gt;Glu (D)">Asp-&gt;Glu (D)</option>
        <option value="Asp-&gt;Gly (D)">Asp-&gt;Gly (D)</option>
        <option value="Asp-&gt;His (D)">Asp-&gt;His (D)</option>
        <option value="Asp-&gt;Lys (D)">Asp-&gt;Lys (D)</option>
        <option value="Asp-&gt;Met (D)">Asp-&gt;Met (D)</option>
        <option value="Asp-&gt;Phe (D)">Asp-&gt;Phe (D)</option>
        <option value="Asp-&gt;Pro (D)">Asp-&gt;Pro (D)</option>
        <option value="Asp-&gt;Ser (D)">Asp-&gt;Ser (D)</option>
        <option value="Asp-&gt;Thr (D)">Asp-&gt;Thr (D)</option>
        <option value="Asp-&gt;Trp (D)">Asp-&gt;Trp (D)</option>
        <option value="Asp-&gt;Tyr (D)">Asp-&gt;Tyr (D)</option>
        <option value="Asp-&gt;Val (D)">Asp-&gt;Val (D)</option>
        <option value="Asp-&gt;Xle (D)">Asp-&gt;Xle (D)</option>
        <option value="Atto495Maleimide (C)">Atto495Maleimide (C)</option>
        <option value="BADGE (C)">BADGE (C)</option>
        <option value="BDMAPP (H)">BDMAPP (H)</option>
        <option value="BDMAPP (K)">BDMAPP (K)</option>
        <option value="BDMAPP (W)">BDMAPP (W)</option>
        <option value="BDMAPP (Y)">BDMAPP (Y)</option>
        <option value="BHAc (K)">BHAc (K)</option>
        <option value="BHT (C)">BHT (C)</option>
        <option value="BHT (H)">BHT (H)</option>
        <option value="BHT (K)">BHT (K)</option>
        <option value="BHTOH (C)">BHTOH (C)</option>
        <option value="BHTOH (H)">BHTOH (H)</option>
        <option value="BHTOH (K)">BHTOH (K)</option>
        <option value="BITC (C)">BITC (C)</option>
        <option value="BITC (K)">BITC (K)</option>
        <option value="BITC (N-term)">BITC (N-term)</option>
        <option value="BMOE (C)">BMOE (C)</option>
        <option value="BMP-piperidinol (C)">BMP-piperidinol (C)</option>
        <option value="BMP-piperidinol (M)">BMP-piperidinol (M)</option>
        <option value="Bacillosamine (N)">Bacillosamine (N)</option>
        <option value="Benzoyl (K)">Benzoyl (K)</option>
        <option value="Benzoyl (N-term)">Benzoyl (N-term)</option>
        <option value="Biotin (K)">Biotin (K)</option>
        <option value="Biotin (N-term)">Biotin (N-term)</option>
        <option value="Biotin-HPDP (C)">Biotin-HPDP (C)</option>
        <option value="Biotin-PEG-PRA (M)">Biotin-PEG-PRA (M)</option>
        <option value="Biotin-PEO-Amine (D)">Biotin-PEO-Amine (D)</option>
        <option value="Biotin-PEO-Amine (E)">Biotin-PEO-Amine (E)</option>
        <option value="Biotin-phenacyl (C)">Biotin-phenacyl (C)</option>
        <option value="Biotin-phenacyl (H)">Biotin-phenacyl (H)</option>
        <option value="Biotin-phenacyl (S)">Biotin-phenacyl (S)</option>
        <option value="Biotin:Cayman-10013 (C)">Biotin:Cayman-10013 (C)</option>
        <option value="Biotin:Cayman-10141 (C)">Biotin:Cayman-10141 (C)</option>
        <option value="Biotin:Invitrogen-M1602 (C)">Biotin:Invitrogen-M1602 (C)</option>
        <option value="Biotin:Sigma-B1267 (C)">Biotin:Sigma-B1267 (C)</option>
        <option value="Biotin:Thermo-21325 (K)">Biotin:Thermo-21325 (K)</option>
        <option value="Biotin:Thermo-21345 (Q)">Biotin:Thermo-21345 (Q)</option>
        <option value="Biotin:Thermo-21360 (C-term)">Biotin:Thermo-21360 (C-term)</option>
        <option value="Biotin:Thermo-21901+2H2O (C)">Biotin:Thermo-21901+2H2O (C)</option>
        <option value="Biotin:Thermo-21901+H2O (C)">Biotin:Thermo-21901+H2O (C)</option>
        <option value="Biotin:Thermo-21911 (C)">Biotin:Thermo-21911 (C)</option>
        <option value="Biotin:Thermo-33033 (N-term)">Biotin:Thermo-33033 (N-term)</option>
        <option value="Biotin:Thermo-33033-H (N-term)">Biotin:Thermo-33033-H (N-term)</option>
        <option value="Biotin:Thermo-88310 (K)">Biotin:Thermo-88310 (K)</option>
        <option value="Biotin:Thermo-88317 (S)">Biotin:Thermo-88317 (S)</option>
        <option value="Biotin:Thermo-88317 (Y)">Biotin:Thermo-88317 (Y)</option>
        <option value="BisANS (K)">BisANS (K)</option>
        <option value="Bodipy (C)">Bodipy (C)</option>
        <option value="Bromo (F)">Bromo (F)</option>
        <option value="Bromo (H)">Bromo (H)</option>
        <option value="Bromo (W)">Bromo (W)</option>
        <option value="Bromo (Y)">Bromo (Y)</option>
        <option value="Bromobimane (C)">Bromobimane (C)</option>
        <option value="Butyryl (K)">Butyryl (K)</option>
        <option value="C8-QAT (K)">C8-QAT (K)</option>
        <option value="C8-QAT (N-term)">C8-QAT (N-term)</option>
        <option value="CAF (N-term)">CAF (N-term)</option>
        <option value="CAMthiopropanoyl (K)">CAMthiopropanoyl (K)</option>
        <option value="CHDH (D)">CHDH (D)</option>
        <option value="CLIP_TRAQ_2 (K)">CLIP_TRAQ_2 (K)</option>
        <option value="CLIP_TRAQ_2 (N-term)">CLIP_TRAQ_2 (N-term)</option>
        <option value="CLIP_TRAQ_2 (Y)">CLIP_TRAQ_2 (Y)</option>
        <option value="CLIP_TRAQ_3 (K)">CLIP_TRAQ_3 (K)</option>
        <option value="CLIP_TRAQ_3 (N-term)">CLIP_TRAQ_3 (N-term)</option>
        <option value="CLIP_TRAQ_3 (Y)">CLIP_TRAQ_3 (Y)</option>
        <option value="CLIP_TRAQ_4 (K)">CLIP_TRAQ_4 (K)</option>
        <option value="CLIP_TRAQ_4 (N-term)">CLIP_TRAQ_4 (N-term)</option>
        <option value="CLIP_TRAQ_4 (Y)">CLIP_TRAQ_4 (Y)</option>
        <option value="Can-FP-biotin (S)">Can-FP-biotin (S)</option>
        <option value="Can-FP-biotin (T)">Can-FP-biotin (T)</option>
        <option value="Can-FP-biotin (Y)">Can-FP-biotin (Y)</option>
        <option value="Carbamidomethyl (C)">Carbamidomethyl (C)</option>
        <option value="Carbamidomethyl (D)">Carbamidomethyl (D)</option>
        <option value="Carbamidomethyl (E)">Carbamidomethyl (E)</option>
        <option value="Carbamidomethyl (H)">Carbamidomethyl (H)</option>
        <option value="Carbamidomethyl (K)">Carbamidomethyl (K)</option>
        <option value="Carbamidomethyl (N-term)">Carbamidomethyl (N-term)</option>
        <option value="Carbamidomethyl (S)">Carbamidomethyl (S)</option>
        <option value="Carbamidomethyl (T)">Carbamidomethyl (T)</option>
        <option value="Carbamidomethyl (Y)">Carbamidomethyl (Y)</option>
        <option value="CarbamidomethylDTT (C)">CarbamidomethylDTT (C)</option>
        <option value="Carbamyl (C)">Carbamyl (C)</option>
        <option value="Carbamyl (K)">Carbamyl (K)</option>
        <option value="Carbamyl (M)">Carbamyl (M)</option>
        <option value="Carbamyl (N-term)">Carbamyl (N-term)</option>
        <option value="Carbamyl (R)">Carbamyl (R)</option>
        <option value="Carbamyl (S)">Carbamyl (S)</option>
        <option value="Carbamyl (T)">Carbamyl (T)</option>
        <option value="Carbamyl (Y)">Carbamyl (Y)</option>
        <option value="Carbofuran (S)">Carbofuran (S)</option>
        <option value="Carboxy (D)">Carboxy (D)</option>
        <option value="Carboxy (E)">Carboxy (E)</option>
        <option value="Carboxy (K)">Carboxy (K)</option>
        <option value="Carboxy (W)">Carboxy (W)</option>
        <option value="Carboxyethyl (H)">Carboxyethyl (H)</option>
        <option value="Carboxyethyl (K)">Carboxyethyl (K)</option>
        <option value="Carboxymethyl (C)">Carboxymethyl (C)</option>
        <option value="Carboxymethyl (K)">Carboxymethyl (K)</option>
        <option value="Carboxymethyl (N-term)">Carboxymethyl (N-term)</option>
        <option value="Carboxymethyl (W)">Carboxymethyl (W)</option>
        <option value="Carboxymethyl:13C(2) (C)">Carboxymethyl:13C(2) (C)</option>
        <option value="CarboxymethylDMAP (N-term)">CarboxymethylDMAP (N-term)</option>
        <option value="CarboxymethylDTT (C)">CarboxymethylDTT (C)</option>
        <option value="Cation:Ag (C-term)">Cation:Ag (C-term)</option>
        <option value="Cation:Ag (D)">Cation:Ag (D)</option>
        <option value="Cation:Ag (E)">Cation:Ag (E)</option>
        <option value="Cation:Ca[II] (C-term)">Cation:Ca[II] (C-term)</option>
        <option value="Cation:Ca[II] (D)">Cation:Ca[II] (D)</option>
        <option value="Cation:Ca[II] (E)">Cation:Ca[II] (E)</option>
        <option value="Cation:Cu[I] (C-term)">Cation:Cu[I] (C-term)</option>
        <option value="Cation:Cu[I] (D)">Cation:Cu[I] (D)</option>
        <option value="Cation:Cu[I] (E)">Cation:Cu[I] (E)</option>
        <option value="Cation:Fe[II] (C-term)">Cation:Fe[II] (C-term)</option>
        <option value="Cation:Fe[II] (D)">Cation:Fe[II] (D)</option>
        <option value="Cation:Fe[II] (E)">Cation:Fe[II] (E)</option>
        <option value="Cation:K (C-term)">Cation:K (C-term)</option>
        <option value="Cation:K (D)">Cation:K (D)</option>
        <option value="Cation:K (E)">Cation:K (E)</option>
        <option value="Cation:Li (C-term)">Cation:Li (C-term)</option>
        <option value="Cation:Li (D)">Cation:Li (D)</option>
        <option value="Cation:Li (E)">Cation:Li (E)</option>
        <option value="Cation:Mg[II] (C-term)">Cation:Mg[II] (C-term)</option>
        <option value="Cation:Mg[II] (D)">Cation:Mg[II] (D)</option>
        <option value="Cation:Mg[II] (E)">Cation:Mg[II] (E)</option>
        <option value="Cation:Na (C-term)">Cation:Na (C-term)</option>
        <option value="Cation:Na (D)">Cation:Na (D)</option>
        <option value="Cation:Na (E)">Cation:Na (E)</option>
        <option value="Cation:Ni[II] (C-term)">Cation:Ni[II] (C-term)</option>
        <option value="Cation:Ni[II] (D)">Cation:Ni[II] (D)</option>
        <option value="Cation:Ni[II] (E)">Cation:Ni[II] (E)</option>
        <option value="Cation:Zn[II] (C-term)">Cation:Zn[II] (C-term)</option>
        <option value="Cation:Zn[II] (D)">Cation:Zn[II] (D)</option>
        <option value="Cation:Zn[II] (E)">Cation:Zn[II] (E)</option>
        <option value="Chlorination (Y)">Chlorination (Y)</option>
        <option value="Chlorpyrifos (S)">Chlorpyrifos (S)</option>
        <option value="Chlorpyrifos (T)">Chlorpyrifos (T)</option>
        <option value="Chlorpyrifos (Y)">Chlorpyrifos (Y)</option>
        <option value="CoenzymeA (C)">CoenzymeA (C)</option>
        <option value="CresylSaligeninPhosphate (H)">CresylSaligeninPhosphate (H)</option>
        <option value="CresylSaligeninPhosphate (K)">CresylSaligeninPhosphate (K)</option>
        <option value="CresylSaligeninPhosphate (R)">CresylSaligeninPhosphate (R)</option>
        <option value="CresylSaligeninPhosphate (S)">CresylSaligeninPhosphate (S)</option>
        <option value="CresylSaligeninPhosphate (T)">CresylSaligeninPhosphate (T)</option>
        <option value="CresylSaligeninPhosphate (Y)">CresylSaligeninPhosphate (Y)</option>
        <option value="Cresylphosphate (H)">Cresylphosphate (H)</option>
        <option value="Cresylphosphate (K)">Cresylphosphate (K)</option>
        <option value="Cresylphosphate (R)">Cresylphosphate (R)</option>
        <option value="Cresylphosphate (S)">Cresylphosphate (S)</option>
        <option value="Cresylphosphate (T)">Cresylphosphate (T)</option>
        <option value="Cresylphosphate (Y)">Cresylphosphate (Y)</option>
        <option value="Crotonaldehyde (C)">Crotonaldehyde (C)</option>
        <option value="Crotonaldehyde (H)">Crotonaldehyde (H)</option>
        <option value="Crotonaldehyde (K)">Crotonaldehyde (K)</option>
        <option value="Crotonyl (K)">Crotonyl (K)</option>
        <option value="CuSMo (C)">CuSMo (C)</option>
        <option value="Cy3-maleimide (C)">Cy3-maleimide (C)</option>
        <option value="Cy3b-maleimide (C)">Cy3b-maleimide (C)</option>
        <option value="CyDye-Cy3 (C)">CyDye-Cy3 (C)</option>
        <option value="CyDye-Cy5 (C)">CyDye-Cy5 (C)</option>
        <option value="Cyano (C)">Cyano (C)</option>
        <option value="Cys-&gt;Ala (C)">Cys-&gt;Ala (C)</option>
        <option value="Cys-&gt;Arg (C)">Cys-&gt;Arg (C)</option>
        <option value="Cys-&gt;Asn (C)">Cys-&gt;Asn (C)</option>
        <option value="Cys-&gt;Asp (C)">Cys-&gt;Asp (C)</option>
        <option value="Cys-&gt;Dha (C)">Cys-&gt;Dha (C)</option>
        <option value="Cys-&gt;Gln (C)">Cys-&gt;Gln (C)</option>
        <option value="Cys-&gt;Glu (C)">Cys-&gt;Glu (C)</option>
        <option value="Cys-&gt;Gly (C)">Cys-&gt;Gly (C)</option>
        <option value="Cys-&gt;His (C)">Cys-&gt;His (C)</option>
        <option value="Cys-&gt;Lys (C)">Cys-&gt;Lys (C)</option>
        <option value="Cys-&gt;Met (C)">Cys-&gt;Met (C)</option>
        <option value="Cys-&gt;Oxoalanine (C)">Cys-&gt;Oxoalanine (C)</option>
        <option value="Cys-&gt;Phe (C)">Cys-&gt;Phe (C)</option>
        <option value="Cys-&gt;Pro (C)">Cys-&gt;Pro (C)</option>
        <option value="Cys-&gt;Ser (C)">Cys-&gt;Ser (C)</option>
        <option value="Cys-&gt;Thr (C)">Cys-&gt;Thr (C)</option>
        <option value="Cys-&gt;Trp (C)">Cys-&gt;Trp (C)</option>
        <option value="Cys-&gt;Tyr (C)">Cys-&gt;Tyr (C)</option>
        <option value="Cys-&gt;Val (C)">Cys-&gt;Val (C)</option>
        <option value="Cys-&gt;Xle (C)">Cys-&gt;Xle (C)</option>
        <option value="Cys-&gt;ethylaminoAla (C)">Cys-&gt;ethylaminoAla (C)</option>
        <option value="Cys-&gt;methylaminoAla (C)">Cys-&gt;methylaminoAla (C)</option>
        <option value="Cysteinyl (C)">Cysteinyl (C)</option>
        <option value="Cytopiloyne (C)">Cytopiloyne (C)</option>
        <option value="Cytopiloyne (K)">Cytopiloyne (K)</option>
        <option value="Cytopiloyne (N-term)">Cytopiloyne (N-term)</option>
        <option value="Cytopiloyne (P)">Cytopiloyne (P)</option>
        <option value="Cytopiloyne (R)">Cytopiloyne (R)</option>
        <option value="Cytopiloyne (S)">Cytopiloyne (S)</option>
        <option value="Cytopiloyne (Y)">Cytopiloyne (Y)</option>
        <option value="Cytopiloyne+water (C)">Cytopiloyne+water (C)</option>
        <option value="Cytopiloyne+water (K)">Cytopiloyne+water (K)</option>
        <option value="Cytopiloyne+water (N-term)">Cytopiloyne+water (N-term)</option>
        <option value="Cytopiloyne+water (R)">Cytopiloyne+water (R)</option>
        <option value="Cytopiloyne+water (S)">Cytopiloyne+water (S)</option>
        <option value="Cytopiloyne+water (T)">Cytopiloyne+water (T)</option>
        <option value="Cytopiloyne+water (Y)">Cytopiloyne+water (Y)</option>
        <option value="DAET (S)">DAET (S)</option>
        <option value="DAET (T)">DAET (T)</option>
        <option value="DEDGFLYMVYASQETFG (K)">DEDGFLYMVYASQETFG (K)</option>
        <option value="DFDNB (K)">DFDNB (K)</option>
        <option value="DFDNB (N)">DFDNB (N)</option>
        <option value="DFDNB (Q)">DFDNB (Q)</option>
        <option value="DFDNB (R)">DFDNB (R)</option>
        <option value="DHP (C)">DHP (C)</option>
        <option value="DMPO (C)">DMPO (C)</option>
        <option value="DMPO (H)">DMPO (H)</option>
        <option value="DMPO (Y)">DMPO (Y)</option>
        <option value="DNCB_hapten (C)">DNCB_hapten (C)</option>
        <option value="DNCB_hapten (H)">DNCB_hapten (H)</option>
        <option value="DNCB_hapten (K)">DNCB_hapten (K)</option>
        <option value="DNCB_hapten (Y)">DNCB_hapten (Y)</option>
        <option value="DNPS (C)">DNPS (C)</option>
        <option value="DNPS (W)">DNPS (W)</option>
        <option value="DTBP (K)">DTBP (K)</option>
        <option value="DTBP (N)">DTBP (N)</option>
        <option value="DTBP (Q)">DTBP (Q)</option>
        <option value="DTBP (R)">DTBP (R)</option>
        <option value="DTT_C (C)">DTT_C (C)</option>
        <option value="DTT_C:2H(6) (C)">DTT_C:2H(6) (C)</option>
        <option value="DTT_ST (S)">DTT_ST (S)</option>
        <option value="DTT_ST (T)">DTT_ST (T)</option>
        <option value="DTT_ST:2H(6) (S)">DTT_ST:2H(6) (S)</option>
        <option value="DTT_ST:2H(6) (T)">DTT_ST:2H(6) (T)</option>
        <option value="Dansyl (K)">Dansyl (K)</option>
        <option value="Dansyl (N-term)">Dansyl (N-term)</option>
        <option value="Dap-DSP (A)">Dap-DSP (A)</option>
        <option value="Dap-DSP (E)">Dap-DSP (E)</option>
        <option value="Dap-DSP (K)">Dap-DSP (K)</option>
        <option value="DeStreak (C)">DeStreak (C)</option>
        <option value="Deamidated (N)">Deamidated (N)</option>
        <option value="Deamidated (Q)">Deamidated (Q)</option>
        <option value="Deamidated (R)">Deamidated (R)</option>
        <option value="Deamidated:18O(1) (N)">Deamidated:18O(1) (N)</option>
        <option value="Deamidated:18O(1) (Q)">Deamidated:18O(1) (Q)</option>
        <option value="Decanoyl (S)">Decanoyl (S)</option>
        <option value="Decanoyl (T)">Decanoyl (T)</option>
        <option value="Dehydrated (D)">Dehydrated (D)</option>
        <option value="Dehydrated (N-term C)">Dehydrated (N-term C)</option>
        <option value="Dehydrated (S)">Dehydrated (S)</option>
        <option value="Dehydrated (T)">Dehydrated (T)</option>
        <option value="Dehydrated (Y)">Dehydrated (Y)</option>
        <option value="Dehydro (C)">Dehydro (C)</option>
        <option value="Delta:H(1)N(-1)18O(1) (N)">Delta:H(1)N(-1)18O(1) (N)</option>
        <option value="Delta:H(2)C(2) (H)">Delta:H(2)C(2) (H)</option>
        <option value="Delta:H(2)C(2) (K)">Delta:H(2)C(2) (K)</option>
        <option value="Delta:H(2)C(2) (N-term)">Delta:H(2)C(2) (N-term)</option>
        <option value="Delta:H(2)C(3) (K)">Delta:H(2)C(3) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (K)">Delta:H(2)C(3)O(1) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (R)">Delta:H(2)C(3)O(1) (R)</option>
        <option value="Delta:H(2)C(5) (K)">Delta:H(2)C(5) (K)</option>
        <option value="Delta:H(4)C(2) (H)">Delta:H(4)C(2) (H)</option>
        <option value="Delta:H(4)C(2) (K)">Delta:H(4)C(2) (K)</option>
        <option value="Delta:H(4)C(2) (N-term)">Delta:H(4)C(2) (N-term)</option>
        <option value="Delta:H(4)C(2)O(-1)S(1) (S)">Delta:H(4)C(2)O(-1)S(1) (S)</option>
        <option value="Delta:H(4)C(3) (H)">Delta:H(4)C(3) (H)</option>
        <option value="Delta:H(4)C(3) (K)">Delta:H(4)C(3) (K)</option>
        <option value="Delta:H(4)C(3)O(1) (C)">Delta:H(4)C(3)O(1) (C)</option>
        <option value="Delta:H(4)C(3)O(1) (H)">Delta:H(4)C(3)O(1) (H)</option>
        <option value="Delta:H(4)C(3)O(1) (K)">Delta:H(4)C(3)O(1) (K)</option>
        <option value="Delta:H(4)C(6) (K)">Delta:H(4)C(6) (K)</option>
        <option value="Delta:H(5)C(2) (P)">Delta:H(5)C(2) (P)</option>
        <option value="Delta:H(6)C(3)O(1) (C)">Delta:H(6)C(3)O(1) (C)</option>
        <option value="Delta:H(6)C(3)O(1) (H)">Delta:H(6)C(3)O(1) (H)</option>
        <option value="Delta:H(6)C(3)O(1) (K)">Delta:H(6)C(3)O(1) (K)</option>
        <option value="Delta:H(6)C(6)O(1) (K)">Delta:H(6)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (L)">Delta:H(8)C(6)O(1) (L)</option>
        <option value="Delta:H(8)C(6)O(2) (K)">Delta:H(8)C(6)O(2) (K)</option>
        <option value="Delta:Hg(1) (C)">Delta:Hg(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (C)">Delta:S(-1)Se(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (M)">Delta:S(-1)Se(1) (M)</option>
        <option value="Delta:Se(1) (C)">Delta:Se(1) (C)</option>
        <option value="Deoxy (D)">Deoxy (D)</option>
        <option value="Deoxy (S)">Deoxy (S)</option>
        <option value="Deoxy (T)">Deoxy (T)</option>
        <option value="Deoxyhypusine (K)">Deoxyhypusine (K)</option>
        <option value="Dethiomethyl (M)">Dethiomethyl (M)</option>
        <option value="DiART6plex (K)">DiART6plex (K)</option>
        <option value="DiART6plex (N-term)">DiART6plex (N-term)</option>
        <option value="DiART6plex (Y)">DiART6plex (Y)</option>
        <option value="DiART6plex115 (K)">DiART6plex115 (K)</option>
        <option value="DiART6plex115 (N-term)">DiART6plex115 (N-term)</option>
        <option value="DiART6plex115 (Y)">DiART6plex115 (Y)</option>
        <option value="DiART6plex116/119 (K)">DiART6plex116/119 (K)</option>
        <option value="DiART6plex116/119 (N-term)">DiART6plex116/119 (N-term)</option>
        <option value="DiART6plex116/119 (Y)">DiART6plex116/119 (Y)</option>
        <option value="DiART6plex117 (K)">DiART6plex117 (K)</option>
        <option value="DiART6plex117 (N-term)">DiART6plex117 (N-term)</option>
        <option value="DiART6plex117 (Y)">DiART6plex117 (Y)</option>
        <option value="DiART6plex118 (K)">DiART6plex118 (K)</option>
        <option value="DiART6plex118 (N-term)">DiART6plex118 (N-term)</option>
        <option value="DiART6plex118 (Y)">DiART6plex118 (Y)</option>
        <option value="DiLeu4plex (K)">DiLeu4plex (K)</option>
        <option value="DiLeu4plex (N-term)">DiLeu4plex (N-term)</option>
        <option value="DiLeu4plex (Y)">DiLeu4plex (Y)</option>
        <option value="DiLeu4plex115 (K)">DiLeu4plex115 (K)</option>
        <option value="DiLeu4plex115 (N-term)">DiLeu4plex115 (N-term)</option>
        <option value="DiLeu4plex115 (Y)">DiLeu4plex115 (Y)</option>
        <option value="DiLeu4plex117 (K)">DiLeu4plex117 (K)</option>
        <option value="DiLeu4plex117 (N-term)">DiLeu4plex117 (N-term)</option>
        <option value="DiLeu4plex117 (Y)">DiLeu4plex117 (Y)</option>
        <option value="DiLeu4plex118 (K)">DiLeu4plex118 (K)</option>
        <option value="DiLeu4plex118 (N-term)">DiLeu4plex118 (N-term)</option>
        <option value="DiLeu4plex118 (Y)">DiLeu4plex118 (Y)</option>
        <option value="Diacylglycerol (C)">Diacylglycerol (C)</option>
        <option value="Dibromo (Y)">Dibromo (Y)</option>
        <option value="Dicarbamidomethyl (C)">Dicarbamidomethyl (C)</option>
        <option value="Dicarbamidomethyl (H)">Dicarbamidomethyl (H)</option>
        <option value="Dicarbamidomethyl (K)">Dicarbamidomethyl (K)</option>
        <option value="Dicarbamidomethyl (N-term)">Dicarbamidomethyl (N-term)</option>
        <option value="Dicarbamidomethyl (R)">Dicarbamidomethyl (R)</option>
        <option value="Didehydro (C-term K)">Didehydro (C-term K)</option>
        <option value="Didehydro (S)">Didehydro (S)</option>
        <option value="Didehydro (T)">Didehydro (T)</option>
        <option value="Didehydro (Y)">Didehydro (Y)</option>
        <option value="Didehydroretinylidene (K)">Didehydroretinylidene (K)</option>
        <option value="Diethyl (K)">Diethyl (K)</option>
        <option value="Diethyl (N-term)">Diethyl (N-term)</option>
        <option value="Diethylphosphate (C)">Diethylphosphate (C)</option>
        <option value="Diethylphosphate (H)">Diethylphosphate (H)</option>
        <option value="Diethylphosphate (K)">Diethylphosphate (K)</option>
        <option value="Diethylphosphate (N-term)">Diethylphosphate (N-term)</option>
        <option value="Diethylphosphate (S)">Diethylphosphate (S)</option>
        <option value="Diethylphosphate (T)">Diethylphosphate (T)</option>
        <option value="Diethylphosphate (Y)">Diethylphosphate (Y)</option>
        <option value="Difuran (Y)">Difuran (Y)</option>
        <option value="Dihydroxyimidazolidine (R)">Dihydroxyimidazolidine (R)</option>
        <option value="Diiodo (H)">Diiodo (H)</option>
        <option value="Diiodo (Y)">Diiodo (Y)</option>
        <option value="Diironsubcluster (C)">Diironsubcluster (C)</option>
        <option value="Diisopropylphosphate (K)">Diisopropylphosphate (K)</option>
        <option value="Diisopropylphosphate (N-term)">Diisopropylphosphate (N-term)</option>
        <option value="Diisopropylphosphate (S)">Diisopropylphosphate (S)</option>
        <option value="Diisopropylphosphate (T)">Diisopropylphosphate (T)</option>
        <option value="Diisopropylphosphate (Y)">Diisopropylphosphate (Y)</option>
        <option value="Dimethyl (K)">Dimethyl (K)</option>
        <option value="Dimethyl (N)">Dimethyl (N)</option>
        <option value="Dimethyl (N-term)">Dimethyl (N-term)</option>
        <option value="Dimethyl (R)">Dimethyl (R)</option>
        <option value="Dimethyl:2H(4) (K)">Dimethyl:2H(4) (K)</option>
        <option value="Dimethyl:2H(4) (N-term)">Dimethyl:2H(4) (N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (K)">Dimethyl:2H(4)13C(2) (K)</option>
        <option value="Dimethyl:2H(4)13C(2) (N-term)">Dimethyl:2H(4)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6) (K)">Dimethyl:2H(6) (K)</option>
        <option value="Dimethyl:2H(6) (N-term)">Dimethyl:2H(6) (N-term)</option>
        <option value="Dimethyl:2H(6) (R)">Dimethyl:2H(6) (R)</option>
        <option value="Dimethyl:2H(6)13C(2) (K)">Dimethyl:2H(6)13C(2) (K)</option>
        <option value="Dimethyl:2H(6)13C(2) (N-term)">Dimethyl:2H(6)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (R)">Dimethyl:2H(6)13C(2) (R)</option>
        <option value="DimethylArsino (C)">DimethylArsino (C)</option>
        <option value="DimethylamineGMBS (C)">DimethylamineGMBS (C)</option>
        <option value="DimethylpyrroleAdduct (K)">DimethylpyrroleAdduct (K)</option>
        <option value="Dioxidation (C)">Dioxidation (C)</option>
        <option value="Dioxidation (F)">Dioxidation (F)</option>
        <option value="Dioxidation (K)">Dioxidation (K)</option>
        <option value="Dioxidation (M)">Dioxidation (M)</option>
        <option value="Dioxidation (P)">Dioxidation (P)</option>
        <option value="Dioxidation (R)">Dioxidation (R)</option>
        <option value="Dioxidation (W)">Dioxidation (W)</option>
        <option value="Dioxidation (Y)">Dioxidation (Y)</option>
        <option value="Diphthamide (H)">Diphthamide (H)</option>
        <option value="Dipyridyl (C)">Dipyridyl (C)</option>
        <option value="Dipyrrolylmethanemethyl (C)">Dipyrrolylmethanemethyl (C)</option>
        <option value="DyLight-maleimide (C)">DyLight-maleimide (C)</option>
        <option value="EDEDTIDVFQQQTGG (K)">EDEDTIDVFQQQTGG (K)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (S)">EDT-iodoacetyl-PEO-biotin (S)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (T)">EDT-iodoacetyl-PEO-biotin (T)</option>
        <option value="EDT-maleimide-PEO-biotin (S)">EDT-maleimide-PEO-biotin (S)</option>
        <option value="EDT-maleimide-PEO-biotin (T)">EDT-maleimide-PEO-biotin (T)</option>
        <option value="EEEDVIEVYQEQTGG (K)">EEEDVIEVYQEQTGG (K)</option>
        <option value="EGCG1 (C)">EGCG1 (C)</option>
        <option value="EGCG2 (C)">EGCG2 (C)</option>
        <option value="EHD-diphenylpentanone (C)">EHD-diphenylpentanone (C)</option>
        <option value="EHD-diphenylpentanone (M)">EHD-diphenylpentanone (M)</option>
        <option value="EQAT (C)">EQAT (C)</option>
        <option value="EQAT:2H(5) (C)">EQAT:2H(5) (C)</option>
        <option value="EQIGG (K)">EQIGG (K)</option>
        <option value="ESP (K)">ESP (K)</option>
        <option value="ESP (N-term)">ESP (N-term)</option>
        <option value="ESP:2H(10) (K)">ESP:2H(10) (K)</option>
        <option value="ESP:2H(10) (N-term)">ESP:2H(10) (N-term)</option>
        <option value="Ethanedithiol (S)">Ethanedithiol (S)</option>
        <option value="Ethanedithiol (T)">Ethanedithiol (T)</option>
        <option value="Ethanolamine (C)">Ethanolamine (C)</option>
        <option value="Ethanolamine (C-term)">Ethanolamine (C-term)</option>
        <option value="Ethanolamine (D)">Ethanolamine (D)</option>
        <option value="Ethanolamine (E)">Ethanolamine (E)</option>
        <option value="Ethanolyl (C)">Ethanolyl (C)</option>
        <option value="Ethanolyl (K)">Ethanolyl (K)</option>
        <option value="Ethanolyl (R)">Ethanolyl (R)</option>
        <option value="Ethoxyformyl (H)">Ethoxyformyl (H)</option>
        <option value="Ethyl (C-term)">Ethyl (C-term)</option>
        <option value="Ethyl (D)">Ethyl (D)</option>
        <option value="Ethyl (E)">Ethyl (E)</option>
        <option value="Ethyl (K)">Ethyl (K)</option>
        <option value="Ethyl (N-term)">Ethyl (N-term)</option>
        <option value="Ethyl+Deamidated (N)">Ethyl+Deamidated (N)</option>
        <option value="Ethyl+Deamidated (Q)">Ethyl+Deamidated (Q)</option>
        <option value="Ethylphosphate (K)">Ethylphosphate (K)</option>
        <option value="Ethylphosphate (N-term)">Ethylphosphate (N-term)</option>
        <option value="Ethylphosphate (S)">Ethylphosphate (S)</option>
        <option value="Ethylphosphate (T)">Ethylphosphate (T)</option>
        <option value="Ethylphosphate (Y)">Ethylphosphate (Y)</option>
        <option value="ExacTagAmine (K)">ExacTagAmine (K)</option>
        <option value="ExacTagThiol (C)">ExacTagThiol (C)</option>
        <option value="FAD (C)">FAD (C)</option>
        <option value="FAD (H)">FAD (H)</option>
        <option value="FAD (Y)">FAD (Y)</option>
        <option value="FMN (S)">FMN (S)</option>
        <option value="FMN (T)">FMN (T)</option>
        <option value="FMNC (C)">FMNC (C)</option>
        <option value="FMNH (C)">FMNH (C)</option>
        <option value="FMNH (H)">FMNH (H)</option>
        <option value="FNEM (C)">FNEM (C)</option>
        <option value="FP-Biotin (K)">FP-Biotin (K)</option>
        <option value="FP-Biotin (S)">FP-Biotin (S)</option>
        <option value="FP-Biotin (T)">FP-Biotin (T)</option>
        <option value="FP-Biotin (Y)">FP-Biotin (Y)</option>
        <option value="FTC (C)">FTC (C)</option>
        <option value="FTC (K)">FTC (K)</option>
        <option value="FTC (P)">FTC (P)</option>
        <option value="FTC (R)">FTC (R)</option>
        <option value="FTC (S)">FTC (S)</option>
        <option value="Farnesyl (C)">Farnesyl (C)</option>
        <option value="Fluorescein (C)">Fluorescein (C)</option>
        <option value="Fluoro (A)">Fluoro (A)</option>
        <option value="Fluoro (F)">Fluoro (F)</option>
        <option value="Fluoro (W)">Fluoro (W)</option>
        <option value="Fluoro (Y)">Fluoro (Y)</option>
        <option value="Formyl (K)">Formyl (K)</option>
        <option value="Formyl (N-term)">Formyl (N-term)</option>
        <option value="Formyl (S)">Formyl (S)</option>
        <option value="Formyl (T)">Formyl (T)</option>
        <option value="Furan (Y)">Furan (Y)</option>
        <option value="G-H1 (R)">G-H1 (R)</option>
        <option value="GG (C)">GG (C)</option>
        <option value="GG (K)">GG (K)</option>
        <option value="GG (S)">GG (S)</option>
        <option value="GG (T)">GG (T)</option>
        <option value="GGQ (K)">GGQ (K)</option>
        <option value="GIST-Quat (K)">GIST-Quat (K)</option>
        <option value="GIST-Quat (N-term)">GIST-Quat (N-term)</option>
        <option value="GIST-Quat:2H(3) (K)">GIST-Quat:2H(3) (K)</option>
        <option value="GIST-Quat:2H(3) (N-term)">GIST-Quat:2H(3) (N-term)</option>
        <option value="GIST-Quat:2H(6) (K)">GIST-Quat:2H(6) (K)</option>
        <option value="GIST-Quat:2H(6) (N-term)">GIST-Quat:2H(6) (N-term)</option>
        <option value="GIST-Quat:2H(9) (K)">GIST-Quat:2H(9) (K)</option>
        <option value="GIST-Quat:2H(9) (N-term)">GIST-Quat:2H(9) (N-term)</option>
        <option value="Galactosyl (K)">Galactosyl (K)</option>
        <option value="GeranylGeranyl (C)">GeranylGeranyl (C)</option>
        <option value="Gln-&gt;Ala (Q)">Gln-&gt;Ala (Q)</option>
        <option value="Gln-&gt;Arg (Q)">Gln-&gt;Arg (Q)</option>
        <option value="Gln-&gt;Asn (Q)">Gln-&gt;Asn (Q)</option>
        <option value="Gln-&gt;Asp (Q)">Gln-&gt;Asp (Q)</option>
        <option value="Gln-&gt;Cys (Q)">Gln-&gt;Cys (Q)</option>
        <option value="Gln-&gt;Glu (Q)">Gln-&gt;Glu (Q)</option>
        <option value="Gln-&gt;Gly (Q)">Gln-&gt;Gly (Q)</option>
        <option value="Gln-&gt;His (Q)">Gln-&gt;His (Q)</option>
        <option value="Gln-&gt;Lys (Q)">Gln-&gt;Lys (Q)</option>
        <option value="Gln-&gt;Met (Q)">Gln-&gt;Met (Q)</option>
        <option value="Gln-&gt;Phe (Q)">Gln-&gt;Phe (Q)</option>
        <option value="Gln-&gt;Pro (Q)">Gln-&gt;Pro (Q)</option>
        <option value="Gln-&gt;Ser (Q)">Gln-&gt;Ser (Q)</option>
        <option value="Gln-&gt;Thr (Q)">Gln-&gt;Thr (Q)</option>
        <option value="Gln-&gt;Trp (Q)">Gln-&gt;Trp (Q)</option>
        <option value="Gln-&gt;Tyr (Q)">Gln-&gt;Tyr (Q)</option>
        <option value="Gln-&gt;Val (Q)">Gln-&gt;Val (Q)</option>
        <option value="Gln-&gt;Xle (Q)">Gln-&gt;Xle (Q)</option>
        <option value="Gln-&gt;pyro-Glu (N-term Q)">Gln-&gt;pyro-Glu (N-term Q)</option>
        <option value="Glu (E)">Glu (E)</option>
        <option value="Glu-&gt;Ala (E)">Glu-&gt;Ala (E)</option>
        <option value="Glu-&gt;Arg (E)">Glu-&gt;Arg (E)</option>
        <option value="Glu-&gt;Asn (E)">Glu-&gt;Asn (E)</option>
        <option value="Glu-&gt;Asp (E)">Glu-&gt;Asp (E)</option>
        <option value="Glu-&gt;Cys (E)">Glu-&gt;Cys (E)</option>
        <option value="Glu-&gt;Gln (E)">Glu-&gt;Gln (E)</option>
        <option value="Glu-&gt;Gly (E)">Glu-&gt;Gly (E)</option>
        <option value="Glu-&gt;His (E)">Glu-&gt;His (E)</option>
        <option value="Glu-&gt;Lys (E)">Glu-&gt;Lys (E)</option>
        <option value="Glu-&gt;Met (E)">Glu-&gt;Met (E)</option>
        <option value="Glu-&gt;Phe (E)">Glu-&gt;Phe (E)</option>
        <option value="Glu-&gt;Pro (E)">Glu-&gt;Pro (E)</option>
        <option value="Glu-&gt;Ser (E)">Glu-&gt;Ser (E)</option>
        <option value="Glu-&gt;Thr (E)">Glu-&gt;Thr (E)</option>
        <option value="Glu-&gt;Trp (E)">Glu-&gt;Trp (E)</option>
        <option value="Glu-&gt;Tyr (E)">Glu-&gt;Tyr (E)</option>
        <option value="Glu-&gt;Val (E)">Glu-&gt;Val (E)</option>
        <option value="Glu-&gt;Xle (E)">Glu-&gt;Xle (E)</option>
        <option value="Glu-&gt;pyro-Glu (N-term E)">Glu-&gt;pyro-Glu (N-term E)</option>
        <option value="GluGlu (E)">GluGlu (E)</option>
        <option value="GluGluGlu (E)">GluGluGlu (E)</option>
        <option value="GluGluGluGlu (E)">GluGluGluGlu (E)</option>
        <option value="Gluconoylation (K)">Gluconoylation (K)</option>
        <option value="Gluconoylation (N-term)">Gluconoylation (N-term)</option>
        <option value="Glucosylgalactosyl (K)">Glucosylgalactosyl (K)</option>
        <option value="Glucuronyl (S)">Glucuronyl (S)</option>
        <option value="Glutathione (C)">Glutathione (C)</option>
        <option value="Gly (K)">Gly (K)</option>
        <option value="Gly (S)">Gly (S)</option>
        <option value="Gly (T)">Gly (T)</option>
        <option value="Gly-&gt;Ala (G)">Gly-&gt;Ala (G)</option>
        <option value="Gly-&gt;Arg (G)">Gly-&gt;Arg (G)</option>
        <option value="Gly-&gt;Asn (G)">Gly-&gt;Asn (G)</option>
        <option value="Gly-&gt;Asp (G)">Gly-&gt;Asp (G)</option>
        <option value="Gly-&gt;Cys (G)">Gly-&gt;Cys (G)</option>
        <option value="Gly-&gt;Gln (G)">Gly-&gt;Gln (G)</option>
        <option value="Gly-&gt;Glu (G)">Gly-&gt;Glu (G)</option>
        <option value="Gly-&gt;His (G)">Gly-&gt;His (G)</option>
        <option value="Gly-&gt;Lys (G)">Gly-&gt;Lys (G)</option>
        <option value="Gly-&gt;Met (G)">Gly-&gt;Met (G)</option>
        <option value="Gly-&gt;Phe (G)">Gly-&gt;Phe (G)</option>
        <option value="Gly-&gt;Pro (G)">Gly-&gt;Pro (G)</option>
        <option value="Gly-&gt;Ser (G)">Gly-&gt;Ser (G)</option>
        <option value="Gly-&gt;Thr (G)">Gly-&gt;Thr (G)</option>
        <option value="Gly-&gt;Trp (G)">Gly-&gt;Trp (G)</option>
        <option value="Gly-&gt;Tyr (G)">Gly-&gt;Tyr (G)</option>
        <option value="Gly-&gt;Val (G)">Gly-&gt;Val (G)</option>
        <option value="Gly-&gt;Xle (G)">Gly-&gt;Xle (G)</option>
        <option value="Gly-loss+Amide (C-term G)">Gly-loss+Amide (C-term G)</option>
        <option value="Glycerophospho (S)">Glycerophospho (S)</option>
        <option value="GlycerylPE (E)">GlycerylPE (E)</option>
        <option value="Glycosyl (P)">Glycosyl (P)</option>
        <option value="Guanidinyl (K)">Guanidinyl (K)</option>
        <option value="Guanidinyl (N-term)">Guanidinyl (N-term)</option>
        <option value="HCysThiolactone (K)">HCysThiolactone (K)</option>
        <option value="HCysteinyl (C)">HCysteinyl (C)</option>
        <option value="HMVK (C)">HMVK (C)</option>
        <option value="HN2_mustard (C)">HN2_mustard (C)</option>
        <option value="HN2_mustard (H)">HN2_mustard (H)</option>
        <option value="HN2_mustard (K)">HN2_mustard (K)</option>
        <option value="HN3_mustard (C)">HN3_mustard (C)</option>
        <option value="HN3_mustard (H)">HN3_mustard (H)</option>
        <option value="HN3_mustard (K)">HN3_mustard (K)</option>
        <option value="HNE (A)">HNE (A)</option>
        <option value="HNE (C)">HNE (C)</option>
        <option value="HNE (H)">HNE (H)</option>
        <option value="HNE (K)">HNE (K)</option>
        <option value="HNE (L)">HNE (L)</option>
        <option value="HNE+Delta:H(2) (C)">HNE+Delta:H(2) (C)</option>
        <option value="HNE+Delta:H(2) (H)">HNE+Delta:H(2) (H)</option>
        <option value="HNE+Delta:H(2) (K)">HNE+Delta:H(2) (K)</option>
        <option value="HNE-BAHAH (C)">HNE-BAHAH (C)</option>
        <option value="HNE-BAHAH (H)">HNE-BAHAH (H)</option>
        <option value="HNE-BAHAH (K)">HNE-BAHAH (K)</option>
        <option value="HNE-Delta:H(2)O (C)">HNE-Delta:H(2)O (C)</option>
        <option value="HNE-Delta:H(2)O (H)">HNE-Delta:H(2)O (H)</option>
        <option value="HNE-Delta:H(2)O (K)">HNE-Delta:H(2)O (K)</option>
        <option value="HPG (R)">HPG (R)</option>
        <option value="Heme (C)">Heme (C)</option>
        <option value="Heme (H)">Heme (H)</option>
        <option value="Hep (K)">Hep (K)</option>
        <option value="Hep (N)">Hep (N)</option>
        <option value="Hep (Q)">Hep (Q)</option>
        <option value="Hep (R)">Hep (R)</option>
        <option value="Hep (S)">Hep (S)</option>
        <option value="Hep (T)">Hep (T)</option>
        <option value="Hex (C)">Hex (C)</option>
        <option value="Hex (K)">Hex (K)</option>
        <option value="Hex (N)">Hex (N)</option>
        <option value="Hex (N-term)">Hex (N-term)</option>
        <option value="Hex (R)">Hex (R)</option>
        <option value="Hex (S)">Hex (S)</option>
        <option value="Hex (T)">Hex (T)</option>
        <option value="Hex (W)">Hex (W)</option>
        <option value="Hex (Y)">Hex (Y)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (N)">Hex(1)HexNAc(1)NeuAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (S)">Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (T)">Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (N)">Hex(1)HexNAc(1)NeuAc(2) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (S)">Hex(1)HexNAc(1)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (T)">Hex(1)HexNAc(1)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (N)">Hex(1)HexNAc(1)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2) (N)">Hex(1)HexNAc(2) (N)</option>
        <option value="Hex(1)HexNAc(2)Pent(1) (N)">Hex(1)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (N)">Hex(1)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1)Pent(1) (N)">Hex(1)HexNAc(2)dHex(1)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (N)">Hex(1)HexNAc(2)dHex(2) (N)</option>
        <option value="Hex(2) (K)">Hex(2) (K)</option>
        <option value="Hex(2) (R)">Hex(2) (R)</option>
        <option value="Hex(2)HexNAc(2) (N)">Hex(2)HexNAc(2) (N)</option>
        <option value="Hex(2)HexNAc(2)Pent(1) (N)">Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (N)">Hex(2)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(3) (N)">Hex(3) (N)</option>
        <option value="Hex(3)HexNAc(1)Pent(1) (N)">Hex(3)HexNAc(1)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2) (N)">Hex(3)HexNAc(2) (N)</option>
        <option value="Hex(3)HexNAc(2)P(1) (N)">Hex(3)HexNAc(2)P(1) (N)</option>
        <option value="Hex(3)HexNAc(4) (N)">Hex(3)HexNAc(4) (N)</option>
        <option value="Hex(4)HexNAc(4) (N)">Hex(4)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(2) (N)">Hex(5)HexNAc(2) (N)</option>
        <option value="Hex(5)HexNAc(4) (N)">Hex(5)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1) (N)">Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(2) (N)">Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex1HexNAc1 (N)">Hex1HexNAc1 (N)</option>
        <option value="Hex1HexNAc1 (S)">Hex1HexNAc1 (S)</option>
        <option value="Hex1HexNAc1 (T)">Hex1HexNAc1 (T)</option>
        <option value="HexN (K)">HexN (K)</option>
        <option value="HexN (N)">HexN (N)</option>
        <option value="HexN (T)">HexN (T)</option>
        <option value="HexN (W)">HexN (W)</option>
        <option value="HexNAc (N)">HexNAc (N)</option>
        <option value="HexNAc (S)">HexNAc (S)</option>
        <option value="HexNAc (T)">HexNAc (T)</option>
        <option value="HexNAc(1)dHex(1) (N)">HexNAc(1)dHex(1) (N)</option>
        <option value="HexNAc(1)dHex(2) (N)">HexNAc(1)dHex(2) (N)</option>
        <option value="HexNAc(2) (N)">HexNAc(2) (N)</option>
        <option value="HexNAc(2)dHex(1) (N)">HexNAc(2)dHex(1) (N)</option>
        <option value="HexNAc(2)dHex(2) (N)">HexNAc(2)dHex(2) (N)</option>
        <option value="His-&gt;Ala (H)">His-&gt;Ala (H)</option>
        <option value="His-&gt;Arg (H)">His-&gt;Arg (H)</option>
        <option value="His-&gt;Asn (H)">His-&gt;Asn (H)</option>
        <option value="His-&gt;Asp (H)">His-&gt;Asp (H)</option>
        <option value="His-&gt;Cys (H)">His-&gt;Cys (H)</option>
        <option value="His-&gt;Gln (H)">His-&gt;Gln (H)</option>
        <option value="His-&gt;Glu (H)">His-&gt;Glu (H)</option>
        <option value="His-&gt;Gly (H)">His-&gt;Gly (H)</option>
        <option value="His-&gt;Lys (H)">His-&gt;Lys (H)</option>
        <option value="His-&gt;Met (H)">His-&gt;Met (H)</option>
        <option value="His-&gt;Phe (H)">His-&gt;Phe (H)</option>
        <option value="His-&gt;Pro (H)">His-&gt;Pro (H)</option>
        <option value="His-&gt;Ser (H)">His-&gt;Ser (H)</option>
        <option value="His-&gt;Thr (H)">His-&gt;Thr (H)</option>
        <option value="His-&gt;Trp (H)">His-&gt;Trp (H)</option>
        <option value="His-&gt;Tyr (H)">His-&gt;Tyr (H)</option>
        <option value="His-&gt;Val (H)">His-&gt;Val (H)</option>
        <option value="His-&gt;Xle (H)">His-&gt;Xle (H)</option>
        <option value="Homocysteic_acid (M)">Homocysteic_acid (M)</option>
        <option value="Hydroxamic_acid (D)">Hydroxamic_acid (D)</option>
        <option value="Hydroxamic_acid (E)">Hydroxamic_acid (E)</option>
        <option value="Hydroxycinnamyl (C)">Hydroxycinnamyl (C)</option>
        <option value="Hydroxyfarnesyl (C)">Hydroxyfarnesyl (C)</option>
        <option value="Hydroxyheme (E)">Hydroxyheme (E)</option>
        <option value="Hydroxymethyl (N)">Hydroxymethyl (N)</option>
        <option value="HydroxymethylOP (K)">HydroxymethylOP (K)</option>
        <option value="Hydroxytrimethyl (K)">Hydroxytrimethyl (K)</option>
        <option value="Hypusine (K)">Hypusine (K)</option>
        <option value="IBTP (C)">IBTP (C)</option>
        <option value="ICAT-C (C)">ICAT-C (C)</option>
        <option value="ICAT-C:13C(9) (C)">ICAT-C:13C(9) (C)</option>
        <option value="ICAT-D (C)">ICAT-D (C)</option>
        <option value="ICAT-D:2H(8) (C)">ICAT-D:2H(8) (C)</option>
        <option value="ICAT-G (C)">ICAT-G (C)</option>
        <option value="ICAT-G:2H(8) (C)">ICAT-G:2H(8) (C)</option>
        <option value="ICAT-H (C)">ICAT-H (C)</option>
        <option value="ICAT-H:13C(6) (C)">ICAT-H:13C(6) (C)</option>
        <option value="ICDID (C)">ICDID (C)</option>
        <option value="ICDID:2H(6) (C)">ICDID:2H(6) (C)</option>
        <option value="ICPL (K)">ICPL (K)</option>
        <option value="ICPL (N-term)">ICPL (N-term)</option>
        <option value="ICPL:13C(6) (K)">ICPL:13C(6) (K)</option>
        <option value="ICPL:13C(6) (N-term)">ICPL:13C(6) (N-term)</option>
        <option value="ICPL:13C(6)2H(4) (K)">ICPL:13C(6)2H(4) (K)</option>
        <option value="ICPL:13C(6)2H(4) (N-term)">ICPL:13C(6)2H(4) (N-term)</option>
        <option value="ICPL:2H(4) (K)">ICPL:2H(4) (K)</option>
        <option value="ICPL:2H(4) (N-term)">ICPL:2H(4) (N-term)</option>
        <option value="IDEnT (C)">IDEnT (C)</option>
        <option value="IED-Biotin (C)">IED-Biotin (C)</option>
        <option value="IGBP (C)">IGBP (C)</option>
        <option value="IGBP:13C(2) (C)">IGBP:13C(2) (C)</option>
        <option value="IMEHex(2)NeuAc(1) (K)">IMEHex(2)NeuAc(1) (K)</option>
        <option value="IMID (K)">IMID (K)</option>
        <option value="IMID:2H(4) (K)">IMID:2H(4) (K)</option>
        <option value="ISD_z+2_ion (N-term)">ISD_z+2_ion (N-term)</option>
        <option value="Iminobiotin (K)">Iminobiotin (K)</option>
        <option value="Iminobiotin (N-term)">Iminobiotin (N-term)</option>
        <option value="Iodo (H)">Iodo (H)</option>
        <option value="Iodo (Y)">Iodo (Y)</option>
        <option value="IodoU-AMP (F)">IodoU-AMP (F)</option>
        <option value="IodoU-AMP (W)">IodoU-AMP (W)</option>
        <option value="IodoU-AMP (Y)">IodoU-AMP (Y)</option>
        <option value="Iodoacetanilide (C)">Iodoacetanilide (C)</option>
        <option value="Iodoacetanilide (K)">Iodoacetanilide (K)</option>
        <option value="Iodoacetanilide (N-term)">Iodoacetanilide (N-term)</option>
        <option value="Iodoacetanilide:13C(6) (C)">Iodoacetanilide:13C(6) (C)</option>
        <option value="Iodoacetanilide:13C(6) (K)">Iodoacetanilide:13C(6) (K)</option>
        <option value="Iodoacetanilide:13C(6) (N-term)">Iodoacetanilide:13C(6) (N-term)</option>
        <option value="Isopropylphospho (S)">Isopropylphospho (S)</option>
        <option value="Isopropylphospho (T)">Isopropylphospho (T)</option>
        <option value="Isopropylphospho (Y)">Isopropylphospho (Y)</option>
        <option value="LG-Hlactam-K (K)">LG-Hlactam-K (K)</option>
        <option value="LG-Hlactam-R (R)">LG-Hlactam-R (R)</option>
        <option value="LG-anhydrolactam (K)">LG-anhydrolactam (K)</option>
        <option value="LG-anhydrolactam (N-term)">LG-anhydrolactam (N-term)</option>
        <option value="LG-anhyropyrrole (K)">LG-anhyropyrrole (K)</option>
        <option value="LG-anhyropyrrole (N-term)">LG-anhyropyrrole (N-term)</option>
        <option value="LG-lactam-K (K)">LG-lactam-K (K)</option>
        <option value="LG-lactam-R (R)">LG-lactam-R (R)</option>
        <option value="LG-pyrrole (K)">LG-pyrrole (K)</option>
        <option value="LG-pyrrole (N-term)">LG-pyrrole (N-term)</option>
        <option value="LRGG (K)">LRGG (K)</option>
        <option value="Label:13C(1)2H(3) (M)">Label:13C(1)2H(3) (M)</option>
        <option value="Label:13C(1)2H(3)+Oxidation (M)">Label:13C(1)2H(3)+Oxidation (M)</option>
        <option value="Label:13C(3) (A)">Label:13C(3) (A)</option>
        <option value="Label:13C(3)15N(1) (A)">Label:13C(3)15N(1) (A)</option>
        <option value="Label:13C(4) (M)">Label:13C(4) (M)</option>
        <option value="Label:13C(4)+Oxidation (M)">Label:13C(4)+Oxidation (M)</option>
        <option value="Label:13C(4)15N(1) (D)">Label:13C(4)15N(1) (D)</option>
        <option value="Label:13C(4)15N(2)+GG (K)">Label:13C(4)15N(2)+GG (K)</option>
        <option value="Label:13C(5) (P)">Label:13C(5) (P)</option>
        <option value="Label:13C(5)15N(1) (E)">Label:13C(5)15N(1) (E)</option>
        <option value="Label:13C(5)15N(1) (M)">Label:13C(5)15N(1) (M)</option>
        <option value="Label:13C(5)15N(1) (P)">Label:13C(5)15N(1) (P)</option>
        <option value="Label:13C(5)15N(1) (V)">Label:13C(5)15N(1) (V)</option>
        <option value="Label:13C(6) (I)">Label:13C(6) (I)</option>
        <option value="Label:13C(6) (K)">Label:13C(6) (K)</option>
        <option value="Label:13C(6) (L)">Label:13C(6) (L)</option>
        <option value="Label:13C(6) (R)">Label:13C(6) (R)</option>
        <option value="Label:13C(6)+Acetyl (K)">Label:13C(6)+Acetyl (K)</option>
        <option value="Label:13C(6)+Dimethyl (K)">Label:13C(6)+Dimethyl (K)</option>
        <option value="Label:13C(6)+GG (K)">Label:13C(6)+GG (K)</option>
        <option value="Label:13C(6)15N(1) (I)">Label:13C(6)15N(1) (I)</option>
        <option value="Label:13C(6)15N(1) (L)">Label:13C(6)15N(1) (L)</option>
        <option value="Label:13C(6)15N(2) (K)">Label:13C(6)15N(2) (K)</option>
        <option value="Label:13C(6)15N(2)+Acetyl (K)">Label:13C(6)15N(2)+Acetyl (K)</option>
        <option value="Label:13C(6)15N(2)+Dimethyl (K)">Label:13C(6)15N(2)+Dimethyl (K)</option>
        <option value="Label:13C(6)15N(2)+GG (K)">Label:13C(6)15N(2)+GG (K)</option>
        <option value="Label:13C(6)15N(4) (R)">Label:13C(6)15N(4) (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl (R)">Label:13C(6)15N(4)+Dimethyl (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)">Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl (R)">Label:13C(6)15N(4)+Methyl (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)">Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)</option>
        <option value="Label:13C(8)15N(2) (R)">Label:13C(8)15N(2) (R)</option>
        <option value="Label:13C(9) (F)">Label:13C(9) (F)</option>
        <option value="Label:13C(9) (Y)">Label:13C(9) (Y)</option>
        <option value="Label:13C(9)+Phospho (Y)">Label:13C(9)+Phospho (Y)</option>
        <option value="Label:13C(9)15N(1) (F)">Label:13C(9)15N(1) (F)</option>
        <option value="Label:15N(1) (A)">Label:15N(1) (A)</option>
        <option value="Label:15N(1) (C)">Label:15N(1) (C)</option>
        <option value="Label:15N(1) (D)">Label:15N(1) (D)</option>
        <option value="Label:15N(1) (E)">Label:15N(1) (E)</option>
        <option value="Label:15N(1) (F)">Label:15N(1) (F)</option>
        <option value="Label:15N(1) (G)">Label:15N(1) (G)</option>
        <option value="Label:15N(1) (I)">Label:15N(1) (I)</option>
        <option value="Label:15N(1) (L)">Label:15N(1) (L)</option>
        <option value="Label:15N(1) (M)">Label:15N(1) (M)</option>
        <option value="Label:15N(1) (P)">Label:15N(1) (P)</option>
        <option value="Label:15N(1) (S)">Label:15N(1) (S)</option>
        <option value="Label:15N(1) (T)">Label:15N(1) (T)</option>
        <option value="Label:15N(1) (V)">Label:15N(1) (V)</option>
        <option value="Label:15N(1) (Y)">Label:15N(1) (Y)</option>
        <option value="Label:15N(2) (K)">Label:15N(2) (K)</option>
        <option value="Label:15N(2) (N)">Label:15N(2) (N)</option>
        <option value="Label:15N(2) (Q)">Label:15N(2) (Q)</option>
        <option value="Label:15N(2) (W)">Label:15N(2) (W)</option>
        <option value="Label:15N(2)2H(9) (K)">Label:15N(2)2H(9) (K)</option>
        <option value="Label:15N(3) (H)">Label:15N(3) (H)</option>
        <option value="Label:15N(4) (R)">Label:15N(4) (R)</option>
        <option value="Label:18O(1) (C-term)">Label:18O(1) (C-term)</option>
        <option value="Label:18O(1) (S)">Label:18O(1) (S)</option>
        <option value="Label:18O(1) (T)">Label:18O(1) (T)</option>
        <option value="Label:18O(1) (Y)">Label:18O(1) (Y)</option>
        <option value="Label:18O(2) (C-term)">Label:18O(2) (C-term)</option>
        <option value="Label:2H(10) (L)">Label:2H(10) (L)</option>
        <option value="Label:2H(3) (L)">Label:2H(3) (L)</option>
        <option value="Label:2H(3) (M)">Label:2H(3) (M)</option>
        <option value="Label:2H(3)+Oxidation (M)">Label:2H(3)+Oxidation (M)</option>
        <option value="Label:2H(4) (F)">Label:2H(4) (F)</option>
        <option value="Label:2H(4) (K)">Label:2H(4) (K)</option>
        <option value="Label:2H(4) (Y)">Label:2H(4) (Y)</option>
        <option value="Label:2H(4)+Acetyl (K)">Label:2H(4)+Acetyl (K)</option>
        <option value="Label:2H(4)+GG (K)">Label:2H(4)+GG (K)</option>
        <option value="Label:2H(4)13C(1) (R)">Label:2H(4)13C(1) (R)</option>
        <option value="Label:2H(6)15N(1) (P)">Label:2H(6)15N(1) (P)</option>
        <option value="Label:2H(7)15N(4) (R)">Label:2H(7)15N(4) (R)</option>
        <option value="Label:2H(9)13C(6)15N(2) (K)">Label:2H(9)13C(6)15N(2) (K)</option>
        <option value="Leu-&gt;MetOx (L)">Leu-&gt;MetOx (L)</option>
        <option value="Lipoyl (K)">Lipoyl (K)</option>
        <option value="Lys (N-term)">Lys (N-term)</option>
        <option value="Lys-&gt;Ala (K)">Lys-&gt;Ala (K)</option>
        <option value="Lys-&gt;Allysine (K)">Lys-&gt;Allysine (K)</option>
        <option value="Lys-&gt;AminoadipicAcid (K)">Lys-&gt;AminoadipicAcid (K)</option>
        <option value="Lys-&gt;Arg (K)">Lys-&gt;Arg (K)</option>
        <option value="Lys-&gt;Asn (K)">Lys-&gt;Asn (K)</option>
        <option value="Lys-&gt;Asp (K)">Lys-&gt;Asp (K)</option>
        <option value="Lys-&gt;CamCys (K)">Lys-&gt;CamCys (K)</option>
        <option value="Lys-&gt;Cys (K)">Lys-&gt;Cys (K)</option>
        <option value="Lys-&gt;Gln (K)">Lys-&gt;Gln (K)</option>
        <option value="Lys-&gt;Glu (K)">Lys-&gt;Glu (K)</option>
        <option value="Lys-&gt;Gly (K)">Lys-&gt;Gly (K)</option>
        <option value="Lys-&gt;His (K)">Lys-&gt;His (K)</option>
        <option value="Lys-&gt;Met (K)">Lys-&gt;Met (K)</option>
        <option value="Lys-&gt;MetOx (K)">Lys-&gt;MetOx (K)</option>
        <option value="Lys-&gt;Phe (K)">Lys-&gt;Phe (K)</option>
        <option value="Lys-&gt;Pro (K)">Lys-&gt;Pro (K)</option>
        <option value="Lys-&gt;Ser (K)">Lys-&gt;Ser (K)</option>
        <option value="Lys-&gt;Thr (K)">Lys-&gt;Thr (K)</option>
        <option value="Lys-&gt;Trp (K)">Lys-&gt;Trp (K)</option>
        <option value="Lys-&gt;Tyr (K)">Lys-&gt;Tyr (K)</option>
        <option value="Lys-&gt;Val (K)">Lys-&gt;Val (K)</option>
        <option value="Lys-&gt;Xle (K)">Lys-&gt;Xle (K)</option>
        <option value="Lysbiotinhydrazide (K)">Lysbiotinhydrazide (K)</option>
        <option value="MDCC (C)">MDCC (C)</option>
        <option value="MG-H1 (R)">MG-H1 (R)</option>
        <option value="MM-diphenylpentanone (C)">MM-diphenylpentanone (C)</option>
        <option value="MTSL (C)">MTSL (C)</option>
        <option value="Maleimide-PEO2-Biotin (C)">Maleimide-PEO2-Biotin (C)</option>
        <option value="Malonyl (C)">Malonyl (C)</option>
        <option value="Malonyl (S)">Malonyl (S)</option>
        <option value="Menadione (C)">Menadione (C)</option>
        <option value="Menadione (K)">Menadione (K)</option>
        <option value="Menadione-HQ (C)">Menadione-HQ (C)</option>
        <option value="Menadione-HQ (K)">Menadione-HQ (K)</option>
        <option value="MercaptoEthanol (S)">MercaptoEthanol (S)</option>
        <option value="MercaptoEthanol (T)">MercaptoEthanol (T)</option>
        <option value="Met-&gt;Aha (M)">Met-&gt;Aha (M)</option>
        <option value="Met-&gt;Ala (M)">Met-&gt;Ala (M)</option>
        <option value="Met-&gt;Arg (M)">Met-&gt;Arg (M)</option>
        <option value="Met-&gt;Asn (M)">Met-&gt;Asn (M)</option>
        <option value="Met-&gt;Asp (M)">Met-&gt;Asp (M)</option>
        <option value="Met-&gt;Cys (M)">Met-&gt;Cys (M)</option>
        <option value="Met-&gt;Gln (M)">Met-&gt;Gln (M)</option>
        <option value="Met-&gt;Glu (M)">Met-&gt;Glu (M)</option>
        <option value="Met-&gt;Gly (M)">Met-&gt;Gly (M)</option>
        <option value="Met-&gt;His (M)">Met-&gt;His (M)</option>
        <option value="Met-&gt;Hpg (M)">Met-&gt;Hpg (M)</option>
        <option value="Met-&gt;Hse (C-term M)">Met-&gt;Hse (C-term M)</option>
        <option value="Met-&gt;Hsl (C-term M)">Met-&gt;Hsl (C-term M)</option>
        <option value="Met-&gt;Lys (M)">Met-&gt;Lys (M)</option>
        <option value="Met-&gt;Phe (M)">Met-&gt;Phe (M)</option>
        <option value="Met-&gt;Pro (M)">Met-&gt;Pro (M)</option>
        <option value="Met-&gt;Ser (M)">Met-&gt;Ser (M)</option>
        <option value="Met-&gt;Thr (M)">Met-&gt;Thr (M)</option>
        <option value="Met-&gt;Trp (M)">Met-&gt;Trp (M)</option>
        <option value="Met-&gt;Tyr (M)">Met-&gt;Tyr (M)</option>
        <option value="Met-&gt;Val (M)">Met-&gt;Val (M)</option>
        <option value="Met-&gt;Xle (M)">Met-&gt;Xle (M)</option>
        <option value="Methyl (C)">Methyl (C)</option>
        <option value="Methyl (C-term)">Methyl (C-term)</option>
        <option value="Methyl (D)">Methyl (D)</option>
        <option value="Methyl (E)">Methyl (E)</option>
        <option value="Methyl (H)">Methyl (H)</option>
        <option value="Methyl (I)">Methyl (I)</option>
        <option value="Methyl (K)">Methyl (K)</option>
        <option value="Methyl (L)">Methyl (L)</option>
        <option value="Methyl (N)">Methyl (N)</option>
        <option value="Methyl (N-term)">Methyl (N-term)</option>
        <option value="Methyl (Q)">Methyl (Q)</option>
        <option value="Methyl (R)">Methyl (R)</option>
        <option value="Methyl (S)">Methyl (S)</option>
        <option value="Methyl (T)">Methyl (T)</option>
        <option value="Methyl+Acetyl:2H(3) (K)">Methyl+Acetyl:2H(3) (K)</option>
        <option value="Methyl+Deamidated (N)">Methyl+Deamidated (N)</option>
        <option value="Methyl+Deamidated (Q)">Methyl+Deamidated (Q)</option>
        <option value="Methyl-PEO12-Maleimide (C)">Methyl-PEO12-Maleimide (C)</option>
        <option value="Methyl:2H(2) (K)">Methyl:2H(2) (K)</option>
        <option value="Methyl:2H(3) (C-term)">Methyl:2H(3) (C-term)</option>
        <option value="Methyl:2H(3) (D)">Methyl:2H(3) (D)</option>
        <option value="Methyl:2H(3) (E)">Methyl:2H(3) (E)</option>
        <option value="Methyl:2H(3) (K)">Methyl:2H(3) (K)</option>
        <option value="Methyl:2H(3) (R)">Methyl:2H(3) (R)</option>
        <option value="Methyl:2H(3)+Acetyl:2H(3) (K)">Methyl:2H(3)+Acetyl:2H(3) (K)</option>
        <option value="Methyl:2H(3)13C(1) (K)">Methyl:2H(3)13C(1) (K)</option>
        <option value="Methyl:2H(3)13C(1) (R)">Methyl:2H(3)13C(1) (R)</option>
        <option value="Methylamine (S)">Methylamine (S)</option>
        <option value="Methylamine (T)">Methylamine (T)</option>
        <option value="Methylmalonylation (S)">Methylmalonylation (S)</option>
        <option value="Methylphosphonate (S)">Methylphosphonate (S)</option>
        <option value="Methylphosphonate (T)">Methylphosphonate (T)</option>
        <option value="Methylphosphonate (Y)">Methylphosphonate (Y)</option>
        <option value="Methylpyrroline (K)">Methylpyrroline (K)</option>
        <option value="Methylthio (C)">Methylthio (C)</option>
        <option value="Methylthio (D)">Methylthio (D)</option>
        <option value="Methylthio (K)">Methylthio (K)</option>
        <option value="Methylthio (N)">Methylthio (N)</option>
        <option value="Methylthio (N-term)">Methylthio (N-term)</option>
        <option value="Molybdopterin (C)">Molybdopterin (C)</option>
        <option value="MolybdopterinGD (C)">MolybdopterinGD (C)</option>
        <option value="MolybdopterinGD (D)">MolybdopterinGD (D)</option>
        <option value="MolybdopterinGD+Delta:S(-1)Se(1) (C)">MolybdopterinGD+Delta:S(-1)Se(1) (C)</option>
        <option value="MurNAc (A)">MurNAc (A)</option>
        <option value="Myristoyl (C)">Myristoyl (C)</option>
        <option value="Myristoyl (K)">Myristoyl (K)</option>
        <option value="Myristoyl (N-term G)">Myristoyl (N-term G)</option>
        <option value="N-dimethylphosphate (S)">N-dimethylphosphate (S)</option>
        <option value="NA-LNO2 (C)">NA-LNO2 (C)</option>
        <option value="NA-LNO2 (H)">NA-LNO2 (H)</option>
        <option value="NA-OA-NO2 (C)">NA-OA-NO2 (C)</option>
        <option value="NA-OA-NO2 (H)">NA-OA-NO2 (H)</option>
        <option value="NBS (W)">NBS (W)</option>
        <option value="NBS:13C(6) (W)">NBS:13C(6) (W)</option>
        <option value="NDA (K)">NDA (K)</option>
        <option value="NDA (N-term)">NDA (N-term)</option>
        <option value="NEIAA (C)">NEIAA (C)</option>
        <option value="NEIAA (Y)">NEIAA (Y)</option>
        <option value="NEIAA:2H(5) (C)">NEIAA:2H(5) (C)</option>
        <option value="NEIAA:2H(5) (Y)">NEIAA:2H(5) (Y)</option>
        <option value="NEM:2H(5) (C)">NEM:2H(5) (C)</option>
        <option value="NEM:2H(5)+H2O (C)">NEM:2H(5)+H2O (C)</option>
        <option value="NEMsulfur (C)">NEMsulfur (C)</option>
        <option value="NEMsulfurWater (C)">NEMsulfurWater (C)</option>
        <option value="NHS-LC-Biotin (K)">NHS-LC-Biotin (K)</option>
        <option value="NHS-LC-Biotin (N-term)">NHS-LC-Biotin (N-term)</option>
        <option value="NHS-fluorescein (K)">NHS-fluorescein (K)</option>
        <option value="NIC (K)">NIC (K)</option>
        <option value="NIC (N-term)">NIC (N-term)</option>
        <option value="NIPCAM (C)">NIPCAM (C)</option>
        <option value="NO_SMX_SEMD (C)">NO_SMX_SEMD (C)</option>
        <option value="NO_SMX_SIMD (C)">NO_SMX_SIMD (C)</option>
        <option value="NO_SMX_SMCT (C)">NO_SMX_SMCT (C)</option>
        <option value="Nethylmaleimide (C)">Nethylmaleimide (C)</option>
        <option value="Nethylmaleimide+water (C)">Nethylmaleimide+water (C)</option>
        <option value="Nethylmaleimide+water (K)">Nethylmaleimide+water (K)</option>
        <option value="NeuAc (N)">NeuAc (N)</option>
        <option value="NeuAc (S)">NeuAc (S)</option>
        <option value="NeuAc (T)">NeuAc (T)</option>
        <option value="NeuGc (N)">NeuGc (N)</option>
        <option value="NeuGc (S)">NeuGc (S)</option>
        <option value="NeuGc (T)">NeuGc (T)</option>
        <option value="Nitro (W)">Nitro (W)</option>
        <option value="Nitro (Y)">Nitro (Y)</option>
        <option value="Nitrosyl (C)">Nitrosyl (C)</option>
        <option value="Nmethylmaleimide (C)">Nmethylmaleimide (C)</option>
        <option value="Nmethylmaleimide (K)">Nmethylmaleimide (K)</option>
        <option value="Nmethylmaleimide+water (C)">Nmethylmaleimide+water (C)</option>
        <option value="O-Dimethylphosphate (S)">O-Dimethylphosphate (S)</option>
        <option value="O-Dimethylphosphate (T)">O-Dimethylphosphate (T)</option>
        <option value="O-Dimethylphosphate (Y)">O-Dimethylphosphate (Y)</option>
        <option value="O-Et-N-diMePhospho (S)">O-Et-N-diMePhospho (S)</option>
        <option value="O-Isopropylmethylphosphonate (S)">O-Isopropylmethylphosphonate (S)</option>
        <option value="O-Isopropylmethylphosphonate (T)">O-Isopropylmethylphosphonate (T)</option>
        <option value="O-Isopropylmethylphosphonate (Y)">O-Isopropylmethylphosphonate (Y)</option>
        <option value="O-Methylphosphate (S)">O-Methylphosphate (S)</option>
        <option value="O-Methylphosphate (T)">O-Methylphosphate (T)</option>
        <option value="O-Methylphosphate (Y)">O-Methylphosphate (Y)</option>
        <option value="O-pinacolylmethylphosphonate (H)">O-pinacolylmethylphosphonate (H)</option>
        <option value="O-pinacolylmethylphosphonate (K)">O-pinacolylmethylphosphonate (K)</option>
        <option value="O-pinacolylmethylphosphonate (S)">O-pinacolylmethylphosphonate (S)</option>
        <option value="O-pinacolylmethylphosphonate (T)">O-pinacolylmethylphosphonate (T)</option>
        <option value="O-pinacolylmethylphosphonate (Y)">O-pinacolylmethylphosphonate (Y)</option>
        <option value="Octanoyl (C)">Octanoyl (C)</option>
        <option value="Octanoyl (S)">Octanoyl (S)</option>
        <option value="Octanoyl (T)">Octanoyl (T)</option>
        <option value="OxArgBiotin (R)">OxArgBiotin (R)</option>
        <option value="OxArgBiotinRed (R)">OxArgBiotinRed (R)</option>
        <option value="OxLysBiotin (K)">OxLysBiotin (K)</option>
        <option value="OxLysBiotinRed (K)">OxLysBiotinRed (K)</option>
        <option value="OxProBiotin (P)">OxProBiotin (P)</option>
        <option value="OxProBiotinRed (P)">OxProBiotinRed (P)</option>
        <option value="Oxidation (C)">Oxidation (C)</option>
        <option value="Oxidation (C-term G)">Oxidation (C-term G)</option>
        <option value="Oxidation (D)">Oxidation (D)</option>
        <option value="Oxidation (F)">Oxidation (F)</option>
        <option value="Oxidation (H)">Oxidation (H)</option>
        <option value="Oxidation (K)">Oxidation (K)</option>
        <option value="Oxidation (M)">Oxidation (M)</option>
        <option value="Oxidation (N)">Oxidation (N)</option>
        <option value="Oxidation (P)">Oxidation (P)</option>
        <option value="Oxidation (R)">Oxidation (R)</option>
        <option value="Oxidation (W)">Oxidation (W)</option>
        <option value="Oxidation (Y)">Oxidation (Y)</option>
        <option value="Oxidation+NEM (C)">Oxidation+NEM (C)</option>
        <option value="PEITC (C)">PEITC (C)</option>
        <option value="PEITC (K)">PEITC (K)</option>
        <option value="PEITC (N-term)">PEITC (N-term)</option>
        <option value="PEO-Iodoacetyl-LC-Biotin (C)">PEO-Iodoacetyl-LC-Biotin (C)</option>
        <option value="PET (S)">PET (S)</option>
        <option value="PET (T)">PET (T)</option>
        <option value="PS_Hapten (C)">PS_Hapten (C)</option>
        <option value="PS_Hapten (H)">PS_Hapten (H)</option>
        <option value="PS_Hapten (K)">PS_Hapten (K)</option>
        <option value="Palmitoleyl (C)">Palmitoleyl (C)</option>
        <option value="Palmitoleyl (S)">Palmitoleyl (S)</option>
        <option value="Palmitoleyl (T)">Palmitoleyl (T)</option>
        <option value="Palmitoyl (C)">Palmitoyl (C)</option>
        <option value="Palmitoyl (K)">Palmitoyl (K)</option>
        <option value="Palmitoyl (S)">Palmitoyl (S)</option>
        <option value="Palmitoyl (T)">Palmitoyl (T)</option>
        <option value="Pentylamine (Q)">Pentylamine (Q)</option>
        <option value="Phe-&gt;Ala (F)">Phe-&gt;Ala (F)</option>
        <option value="Phe-&gt;Arg (F)">Phe-&gt;Arg (F)</option>
        <option value="Phe-&gt;Asn (F)">Phe-&gt;Asn (F)</option>
        <option value="Phe-&gt;Asp (F)">Phe-&gt;Asp (F)</option>
        <option value="Phe-&gt;CamCys (F)">Phe-&gt;CamCys (F)</option>
        <option value="Phe-&gt;Cys (F)">Phe-&gt;Cys (F)</option>
        <option value="Phe-&gt;Gln (F)">Phe-&gt;Gln (F)</option>
        <option value="Phe-&gt;Glu (F)">Phe-&gt;Glu (F)</option>
        <option value="Phe-&gt;Gly (F)">Phe-&gt;Gly (F)</option>
        <option value="Phe-&gt;His (F)">Phe-&gt;His (F)</option>
        <option value="Phe-&gt;Lys (F)">Phe-&gt;Lys (F)</option>
        <option value="Phe-&gt;Met (F)">Phe-&gt;Met (F)</option>
        <option value="Phe-&gt;Pro (F)">Phe-&gt;Pro (F)</option>
        <option value="Phe-&gt;Ser (F)">Phe-&gt;Ser (F)</option>
        <option value="Phe-&gt;Thr (F)">Phe-&gt;Thr (F)</option>
        <option value="Phe-&gt;Trp (F)">Phe-&gt;Trp (F)</option>
        <option value="Phe-&gt;Tyr (F)">Phe-&gt;Tyr (F)</option>
        <option value="Phe-&gt;Val (F)">Phe-&gt;Val (F)</option>
        <option value="Phe-&gt;Xle (F)">Phe-&gt;Xle (F)</option>
        <option value="Phenylisocyanate (N-term)">Phenylisocyanate (N-term)</option>
        <option value="Phenylisocyanate:2H(5) (N-term)">Phenylisocyanate:2H(5) (N-term)</option>
        <option value="Phospho (C)">Phospho (C)</option>
        <option value="Phospho (D)">Phospho (D)</option>
        <option value="Phospho (H)">Phospho (H)</option>
        <option value="Phospho (K)">Phospho (K)</option>
        <option value="Phospho (R)">Phospho (R)</option>
        <option value="Phospho (S)">Phospho (S)</option>
        <option value="Phospho (T)">Phospho (T)</option>
        <option value="Phospho (Y)">Phospho (Y)</option>
        <option value="PhosphoHex (S)">PhosphoHex (S)</option>
        <option value="PhosphoHexNAc (S)">PhosphoHexNAc (S)</option>
        <option value="PhosphoHexNAc (T)">PhosphoHexNAc (T)</option>
        <option value="PhosphoUridine (H)">PhosphoUridine (H)</option>
        <option value="PhosphoUridine (Y)">PhosphoUridine (Y)</option>
        <option value="Phosphoadenosine (H)">Phosphoadenosine (H)</option>
        <option value="Phosphoadenosine (K)">Phosphoadenosine (K)</option>
        <option value="Phosphoadenosine (T)">Phosphoadenosine (T)</option>
        <option value="Phosphoadenosine (Y)">Phosphoadenosine (Y)</option>
        <option value="Phosphogluconoylation (K)">Phosphogluconoylation (K)</option>
        <option value="Phosphogluconoylation (N-term)">Phosphogluconoylation (N-term)</option>
        <option value="Phosphoguanosine (H)">Phosphoguanosine (H)</option>
        <option value="Phosphoguanosine (K)">Phosphoguanosine (K)</option>
        <option value="Phosphopantetheine (S)">Phosphopantetheine (S)</option>
        <option value="Phosphopropargyl (S)">Phosphopropargyl (S)</option>
        <option value="Phosphopropargyl (T)">Phosphopropargyl (T)</option>
        <option value="Phosphopropargyl (Y)">Phosphopropargyl (Y)</option>
        <option value="PhosphoribosyldephosphoCoA (S)">PhosphoribosyldephosphoCoA (S)</option>
        <option value="Phycocyanobilin (C)">Phycocyanobilin (C)</option>
        <option value="Phycoerythrobilin (C)">Phycoerythrobilin (C)</option>
        <option value="Phytochromobilin (C)">Phytochromobilin (C)</option>
        <option value="Piperidine (K)">Piperidine (K)</option>
        <option value="Piperidine (N-term)">Piperidine (N-term)</option>
        <option value="Pro-&gt;Ala (P)">Pro-&gt;Ala (P)</option>
        <option value="Pro-&gt;Arg (P)">Pro-&gt;Arg (P)</option>
        <option value="Pro-&gt;Asn (P)">Pro-&gt;Asn (P)</option>
        <option value="Pro-&gt;Asp (P)">Pro-&gt;Asp (P)</option>
        <option value="Pro-&gt;Cys (P)">Pro-&gt;Cys (P)</option>
        <option value="Pro-&gt;Gln (P)">Pro-&gt;Gln (P)</option>
        <option value="Pro-&gt;Glu (P)">Pro-&gt;Glu (P)</option>
        <option value="Pro-&gt;Gly (P)">Pro-&gt;Gly (P)</option>
        <option value="Pro-&gt;His (P)">Pro-&gt;His (P)</option>
        <option value="Pro-&gt;Lys (P)">Pro-&gt;Lys (P)</option>
        <option value="Pro-&gt;Met (P)">Pro-&gt;Met (P)</option>
        <option value="Pro-&gt;Phe (P)">Pro-&gt;Phe (P)</option>
        <option value="Pro-&gt;Pyrrolidinone (P)">Pro-&gt;Pyrrolidinone (P)</option>
        <option value="Pro-&gt;Pyrrolidone (P)">Pro-&gt;Pyrrolidone (P)</option>
        <option value="Pro-&gt;Ser (P)">Pro-&gt;Ser (P)</option>
        <option value="Pro-&gt;Thr (P)">Pro-&gt;Thr (P)</option>
        <option value="Pro-&gt;Trp (P)">Pro-&gt;Trp (P)</option>
        <option value="Pro-&gt;Tyr (P)">Pro-&gt;Tyr (P)</option>
        <option value="Pro-&gt;Val (P)">Pro-&gt;Val (P)</option>
        <option value="Pro-&gt;Xle (P)">Pro-&gt;Xle (P)</option>
        <option value="Pro-&gt;pyro-Glu (P)">Pro-&gt;pyro-Glu (P)</option>
        <option value="Propargylamine (C-term)">Propargylamine (C-term)</option>
        <option value="Propargylamine (D)">Propargylamine (D)</option>
        <option value="Propargylamine (E)">Propargylamine (E)</option>
        <option value="Propionamide (C)">Propionamide (C)</option>
        <option value="Propionamide (K)">Propionamide (K)</option>
        <option value="Propionamide (N-term)">Propionamide (N-term)</option>
        <option value="Propionamide:2H(3) (C)">Propionamide:2H(3) (C)</option>
        <option value="Propionyl (K)">Propionyl (K)</option>
        <option value="Propionyl (N-term)">Propionyl (N-term)</option>
        <option value="Propionyl (S)">Propionyl (S)</option>
        <option value="Propionyl (T)">Propionyl (T)</option>
        <option value="Propionyl:13C(3) (K)">Propionyl:13C(3) (K)</option>
        <option value="Propionyl:13C(3) (N-term)">Propionyl:13C(3) (N-term)</option>
        <option value="Propiophenone (C)">Propiophenone (C)</option>
        <option value="Propiophenone (H)">Propiophenone (H)</option>
        <option value="Propiophenone (K)">Propiophenone (K)</option>
        <option value="Propiophenone (R)">Propiophenone (R)</option>
        <option value="Propiophenone (S)">Propiophenone (S)</option>
        <option value="Propiophenone (T)">Propiophenone (T)</option>
        <option value="Propiophenone (W)">Propiophenone (W)</option>
        <option value="Propyl (K)">Propyl (K)</option>
        <option value="Propyl (N-term)">Propyl (N-term)</option>
        <option value="Propyl:2H(6) (K)">Propyl:2H(6) (K)</option>
        <option value="Propyl:2H(6) (N-term)">Propyl:2H(6) (N-term)</option>
        <option value="PropylNAGthiazoline (C)">PropylNAGthiazoline (C)</option>
        <option value="Puromycin (C-term)">Puromycin (C-term)</option>
        <option value="PyMIC (N-term)">PyMIC (N-term)</option>
        <option value="PyridoxalPhosphate (K)">PyridoxalPhosphate (K)</option>
        <option value="PyridoxalPhosphateH2 (K)">PyridoxalPhosphateH2 (K)</option>
        <option value="Pyridylacetyl (K)">Pyridylacetyl (K)</option>
        <option value="Pyridylacetyl (N-term)">Pyridylacetyl (N-term)</option>
        <option value="Pyridylethyl (C)">Pyridylethyl (C)</option>
        <option value="Pyro-carbamidomethyl (N-term C)">Pyro-carbamidomethyl (N-term C)</option>
        <option value="PyruvicAcidIminyl (K)">PyruvicAcidIminyl (K)</option>
        <option value="QAT (C)">QAT (C)</option>
        <option value="QAT:2H(3) (C)">QAT:2H(3) (C)</option>
        <option value="QEQTGG (K)">QEQTGG (K)</option>
        <option value="QQQTGG (K)">QQQTGG (K)</option>
        <option value="QTGG (K)">QTGG (K)</option>
        <option value="Quinone (W)">Quinone (W)</option>
        <option value="Quinone (Y)">Quinone (Y)</option>
        <option value="RNPXlink1 (C)">RNPXlink1 (C)</option>
        <option value="RNPXlink2 (F)">RNPXlink2 (F)</option>
        <option value="RNPXlink2 (K)">RNPXlink2 (K)</option>
        <option value="RNPXlink2 (L)">RNPXlink2 (L)</option>
        <option value="RNPXlink3 (C)">RNPXlink3 (C)</option>
        <option value="RNPXlink3 (F)">RNPXlink3 (F)</option>
        <option value="RNPXlink4 (C)">RNPXlink4 (C)</option>
        <option value="RNPXlink5 (F)">RNPXlink5 (F)</option>
        <option value="RNPXlink5 (Y)">RNPXlink5 (Y)</option>
        <option value="Retinylidene (K)">Retinylidene (K)</option>
        <option value="SMA (K)">SMA (K)</option>
        <option value="SMA (N-term)">SMA (N-term)</option>
        <option value="SMCC-maleimide (C)">SMCC-maleimide (C)</option>
        <option value="SPITC (K)">SPITC (K)</option>
        <option value="SPITC (N-term)">SPITC (N-term)</option>
        <option value="SPITC:13C(6) (K)">SPITC:13C(6) (K)</option>
        <option value="SPITC:13C(6) (N-term)">SPITC:13C(6) (N-term)</option>
        <option value="SUMO2135 (K)">SUMO2135 (K)</option>
        <option value="SUMO3549 (K)">SUMO3549 (K)</option>
        <option value="Saligenin (H)">Saligenin (H)</option>
        <option value="Saligenin (K)">Saligenin (K)</option>
        <option value="SecCarbamidomethyl (C)">SecCarbamidomethyl (C)</option>
        <option value="SecNEM (C)">SecNEM (C)</option>
        <option value="SecNEM:2H(5) (C)">SecNEM:2H(5) (C)</option>
        <option value="Ser-&gt;Ala (S)">Ser-&gt;Ala (S)</option>
        <option value="Ser-&gt;Arg (S)">Ser-&gt;Arg (S)</option>
        <option value="Ser-&gt;Asn (S)">Ser-&gt;Asn (S)</option>
        <option value="Ser-&gt;Asp (S)">Ser-&gt;Asp (S)</option>
        <option value="Ser-&gt;Cys (S)">Ser-&gt;Cys (S)</option>
        <option value="Ser-&gt;Gln (S)">Ser-&gt;Gln (S)</option>
        <option value="Ser-&gt;Glu (S)">Ser-&gt;Glu (S)</option>
        <option value="Ser-&gt;Gly (S)">Ser-&gt;Gly (S)</option>
        <option value="Ser-&gt;His (S)">Ser-&gt;His (S)</option>
        <option value="Ser-&gt;Lys (S)">Ser-&gt;Lys (S)</option>
        <option value="Ser-&gt;Met (S)">Ser-&gt;Met (S)</option>
        <option value="Ser-&gt;Phe (S)">Ser-&gt;Phe (S)</option>
        <option value="Ser-&gt;Pro (S)">Ser-&gt;Pro (S)</option>
        <option value="Ser-&gt;Thr (S)">Ser-&gt;Thr (S)</option>
        <option value="Ser-&gt;Trp (S)">Ser-&gt;Trp (S)</option>
        <option value="Ser-&gt;Tyr (S)">Ser-&gt;Tyr (S)</option>
        <option value="Ser-&gt;Val (S)">Ser-&gt;Val (S)</option>
        <option value="Ser-&gt;Xle (S)">Ser-&gt;Xle (S)</option>
        <option value="Succinyl (K)">Succinyl (K)</option>
        <option value="Succinyl (N-term)">Succinyl (N-term)</option>
        <option value="Succinyl:13C(4) (K)">Succinyl:13C(4) (K)</option>
        <option value="Succinyl:13C(4) (N-term)">Succinyl:13C(4) (N-term)</option>
        <option value="Succinyl:2H(4) (K)">Succinyl:2H(4) (K)</option>
        <option value="Succinyl:2H(4) (N-term)">Succinyl:2H(4) (N-term)</option>
        <option value="SulfanilicAcid (C-term)">SulfanilicAcid (C-term)</option>
        <option value="SulfanilicAcid (D)">SulfanilicAcid (D)</option>
        <option value="SulfanilicAcid (E)">SulfanilicAcid (E)</option>
        <option value="SulfanilicAcid:13C(6) (C-term)">SulfanilicAcid:13C(6) (C-term)</option>
        <option value="SulfanilicAcid:13C(6) (D)">SulfanilicAcid:13C(6) (D)</option>
        <option value="SulfanilicAcid:13C(6) (E)">SulfanilicAcid:13C(6) (E)</option>
        <option value="Sulfide (C)">Sulfide (C)</option>
        <option value="Sulfide (D)">Sulfide (D)</option>
        <option value="Sulfide (W)">Sulfide (W)</option>
        <option value="Sulfo (C)">Sulfo (C)</option>
        <option value="Sulfo (S)">Sulfo (S)</option>
        <option value="Sulfo (T)">Sulfo (T)</option>
        <option value="Sulfo (Y)">Sulfo (Y)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (K)">Sulfo-NHS-LC-LC-Biotin (K)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (N-term)">Sulfo-NHS-LC-LC-Biotin (N-term)</option>
        <option value="SulfoGMBS (C)">SulfoGMBS (C)</option>
        <option value="SulfurDioxide (C)">SulfurDioxide (C)</option>
        <option value="TAMRA-FP (S)">TAMRA-FP (S)</option>
        <option value="TAMRA-FP (Y)">TAMRA-FP (Y)</option>
        <option value="TMAB (K)">TMAB (K)</option>
        <option value="TMAB (N-term)">TMAB (N-term)</option>
        <option value="TMAB:2H(9) (K)">TMAB:2H(9) (K)</option>
        <option value="TMAB:2H(9) (N-term)">TMAB:2H(9) (N-term)</option>
        <option value="TMPP-Ac (N-term)">TMPP-Ac (N-term)</option>
        <option value="TMT (H)">TMT (H)</option>
        <option value="TMT (K)">TMT (K)</option>
        <option value="TMT (N-term)">TMT (N-term)</option>
        <option value="TMT (S)">TMT (S)</option>
        <option value="TMT (T)">TMT (T)</option>
        <option value="TMT2plex (H)">TMT2plex (H)</option>
        <option value="TMT2plex (K)">TMT2plex (K)</option>
        <option value="TMT2plex (N-term)">TMT2plex (N-term)</option>
        <option value="TMT2plex (S)">TMT2plex (S)</option>
        <option value="TMT2plex (T)">TMT2plex (T)</option>
        <option value="TMT6plex (H)">TMT6plex (H)</option>
        <option value="TMT6plex (K)">TMT6plex (K)</option>
        <option value="TMT6plex (N-term)">TMT6plex (N-term)</option>
        <option value="TMT6plex (S)">TMT6plex (S)</option>
        <option value="TMT6plex (T)">TMT6plex (T)</option>
        <option value="TNBS (K)">TNBS (K)</option>
        <option value="TNBS (N-term)">TNBS (N-term)</option>
        <option value="Thiadiazole (C)">Thiadiazole (C)</option>
        <option value="Thiazolidine (N-term C)">Thiazolidine (N-term C)</option>
        <option value="Thioacyl (K)">Thioacyl (K)</option>
        <option value="Thioacyl (N-term)">Thioacyl (N-term)</option>
        <option value="Thiophos-S-S-biotin (S)">Thiophos-S-S-biotin (S)</option>
        <option value="Thiophos-S-S-biotin (T)">Thiophos-S-S-biotin (T)</option>
        <option value="Thiophos-S-S-biotin (Y)">Thiophos-S-S-biotin (Y)</option>
        <option value="Thiophospho (S)">Thiophospho (S)</option>
        <option value="Thiophospho (T)">Thiophospho (T)</option>
        <option value="Thiophospho (Y)">Thiophospho (Y)</option>
        <option value="Thr-&gt;Ala (T)">Thr-&gt;Ala (T)</option>
        <option value="Thr-&gt;Arg (T)">Thr-&gt;Arg (T)</option>
        <option value="Thr-&gt;Asn (T)">Thr-&gt;Asn (T)</option>
        <option value="Thr-&gt;Asp (T)">Thr-&gt;Asp (T)</option>
        <option value="Thr-&gt;Cys (T)">Thr-&gt;Cys (T)</option>
        <option value="Thr-&gt;Gln (T)">Thr-&gt;Gln (T)</option>
        <option value="Thr-&gt;Glu (T)">Thr-&gt;Glu (T)</option>
        <option value="Thr-&gt;Gly (T)">Thr-&gt;Gly (T)</option>
        <option value="Thr-&gt;His (T)">Thr-&gt;His (T)</option>
        <option value="Thr-&gt;Lys (T)">Thr-&gt;Lys (T)</option>
        <option value="Thr-&gt;Met (T)">Thr-&gt;Met (T)</option>
        <option value="Thr-&gt;Phe (T)">Thr-&gt;Phe (T)</option>
        <option value="Thr-&gt;Pro (T)">Thr-&gt;Pro (T)</option>
        <option value="Thr-&gt;Ser (T)">Thr-&gt;Ser (T)</option>
        <option value="Thr-&gt;Trp (T)">Thr-&gt;Trp (T)</option>
        <option value="Thr-&gt;Tyr (T)">Thr-&gt;Tyr (T)</option>
        <option value="Thr-&gt;Val (T)">Thr-&gt;Val (T)</option>
        <option value="Thr-&gt;Xle (T)">Thr-&gt;Xle (T)</option>
        <option value="Thrbiotinhydrazide (T)">Thrbiotinhydrazide (T)</option>
        <option value="Thyroxine (Y)">Thyroxine (Y)</option>
        <option value="Triiodo (Y)">Triiodo (Y)</option>
        <option value="Triiodothyronine (Y)">Triiodothyronine (Y)</option>
        <option value="Trimethyl (K)">Trimethyl (K)</option>
        <option value="Trimethyl (R)">Trimethyl (R)</option>
        <option value="Trimethyl:13C(3)2H(9) (K)">Trimethyl:13C(3)2H(9) (K)</option>
        <option value="Trimethyl:13C(3)2H(9) (R)">Trimethyl:13C(3)2H(9) (R)</option>
        <option value="Trimethyl:2H(9) (K)">Trimethyl:2H(9) (K)</option>
        <option value="Trimethyl:2H(9) (R)">Trimethyl:2H(9) (R)</option>
        <option value="Trioxidation (C)">Trioxidation (C)</option>
        <option value="Trioxidation (W)">Trioxidation (W)</option>
        <option value="Trioxidation (Y)">Trioxidation (Y)</option>
        <option value="Trp-&gt;Ala (W)">Trp-&gt;Ala (W)</option>
        <option value="Trp-&gt;Arg (W)">Trp-&gt;Arg (W)</option>
        <option value="Trp-&gt;Asn (W)">Trp-&gt;Asn (W)</option>
        <option value="Trp-&gt;Asp (W)">Trp-&gt;Asp (W)</option>
        <option value="Trp-&gt;Cys (W)">Trp-&gt;Cys (W)</option>
        <option value="Trp-&gt;Gln (W)">Trp-&gt;Gln (W)</option>
        <option value="Trp-&gt;Glu (W)">Trp-&gt;Glu (W)</option>
        <option value="Trp-&gt;Gly (W)">Trp-&gt;Gly (W)</option>
        <option value="Trp-&gt;His (W)">Trp-&gt;His (W)</option>
        <option value="Trp-&gt;Hydroxykynurenin (W)">Trp-&gt;Hydroxykynurenin (W)</option>
        <option value="Trp-&gt;Kynurenin (W)">Trp-&gt;Kynurenin (W)</option>
        <option value="Trp-&gt;Lys (W)">Trp-&gt;Lys (W)</option>
        <option value="Trp-&gt;Met (W)">Trp-&gt;Met (W)</option>
        <option value="Trp-&gt;Oxolactone (W)">Trp-&gt;Oxolactone (W)</option>
        <option value="Trp-&gt;Phe (W)">Trp-&gt;Phe (W)</option>
        <option value="Trp-&gt;Pro (W)">Trp-&gt;Pro (W)</option>
        <option value="Trp-&gt;Ser (W)">Trp-&gt;Ser (W)</option>
        <option value="Trp-&gt;Thr (W)">Trp-&gt;Thr (W)</option>
        <option value="Trp-&gt;Tyr (W)">Trp-&gt;Tyr (W)</option>
        <option value="Trp-&gt;Val (W)">Trp-&gt;Val (W)</option>
        <option value="Trp-&gt;Xle (W)">Trp-&gt;Xle (W)</option>
        <option value="Tyr-&gt;Ala (Y)">Tyr-&gt;Ala (Y)</option>
        <option value="Tyr-&gt;Arg (Y)">Tyr-&gt;Arg (Y)</option>
        <option value="Tyr-&gt;Asn (Y)">Tyr-&gt;Asn (Y)</option>
        <option value="Tyr-&gt;Asp (Y)">Tyr-&gt;Asp (Y)</option>
        <option value="Tyr-&gt;Cys (Y)">Tyr-&gt;Cys (Y)</option>
        <option value="Tyr-&gt;Dha (Y)">Tyr-&gt;Dha (Y)</option>
        <option value="Tyr-&gt;Gln (Y)">Tyr-&gt;Gln (Y)</option>
        <option value="Tyr-&gt;Glu (Y)">Tyr-&gt;Glu (Y)</option>
        <option value="Tyr-&gt;Gly (Y)">Tyr-&gt;Gly (Y)</option>
        <option value="Tyr-&gt;His (Y)">Tyr-&gt;His (Y)</option>
        <option value="Tyr-&gt;Lys (Y)">Tyr-&gt;Lys (Y)</option>
        <option value="Tyr-&gt;Met (Y)">Tyr-&gt;Met (Y)</option>
        <option value="Tyr-&gt;Phe (Y)">Tyr-&gt;Phe (Y)</option>
        <option value="Tyr-&gt;Pro (Y)">Tyr-&gt;Pro (Y)</option>
        <option value="Tyr-&gt;Ser (Y)">Tyr-&gt;Ser (Y)</option>
        <option value="Tyr-&gt;Thr (Y)">Tyr-&gt;Thr (Y)</option>
        <option value="Tyr-&gt;Trp (Y)">Tyr-&gt;Trp (Y)</option>
        <option value="Tyr-&gt;Val (Y)">Tyr-&gt;Val (Y)</option>
        <option value="Tyr-&gt;Xle (Y)">Tyr-&gt;Xle (Y)</option>
        <option value="Ub-Br2 (C)">Ub-Br2 (C)</option>
        <option value="Ub-VME (C)">Ub-VME (C)</option>
        <option value="Ub-amide (C)">Ub-amide (C)</option>
        <option value="Ub-fluorescein (C)">Ub-fluorescein (C)</option>
        <option value="UgiJoullie (D)">UgiJoullie (D)</option>
        <option value="UgiJoullie (E)">UgiJoullie (E)</option>
        <option value="UgiJoullieProGly (D)">UgiJoullieProGly (D)</option>
        <option value="UgiJoullieProGly (E)">UgiJoullieProGly (E)</option>
        <option value="UgiJoullieProGlyProGly (D)">UgiJoullieProGlyProGly (D)</option>
        <option value="UgiJoullieProGlyProGly (E)">UgiJoullieProGlyProGly (E)</option>
        <option value="VFQQQTGG (K)">VFQQQTGG (K)</option>
        <option value="VIEVYQEQTGG (K)">VIEVYQEQTGG (K)</option>
        <option value="Val-&gt;Ala (V)">Val-&gt;Ala (V)</option>
        <option value="Val-&gt;Arg (V)">Val-&gt;Arg (V)</option>
        <option value="Val-&gt;Asn (V)">Val-&gt;Asn (V)</option>
        <option value="Val-&gt;Asp (V)">Val-&gt;Asp (V)</option>
        <option value="Val-&gt;Cys (V)">Val-&gt;Cys (V)</option>
        <option value="Val-&gt;Gln (V)">Val-&gt;Gln (V)</option>
        <option value="Val-&gt;Glu (V)">Val-&gt;Glu (V)</option>
        <option value="Val-&gt;Gly (V)">Val-&gt;Gly (V)</option>
        <option value="Val-&gt;His (V)">Val-&gt;His (V)</option>
        <option value="Val-&gt;Lys (V)">Val-&gt;Lys (V)</option>
        <option value="Val-&gt;Met (V)">Val-&gt;Met (V)</option>
        <option value="Val-&gt;Phe (V)">Val-&gt;Phe (V)</option>
        <option value="Val-&gt;Pro (V)">Val-&gt;Pro (V)</option>
        <option value="Val-&gt;Ser (V)">Val-&gt;Ser (V)</option>
        <option value="Val-&gt;Thr (V)">Val-&gt;Thr (V)</option>
        <option value="Val-&gt;Trp (V)">Val-&gt;Trp (V)</option>
        <option value="Val-&gt;Tyr (V)">Val-&gt;Tyr (V)</option>
        <option value="Val-&gt;Xle (V)">Val-&gt;Xle (V)</option>
        <option value="Withaferin (C)">Withaferin (C)</option>
        <option value="Xle-&gt;Ala (I)">Xle-&gt;Ala (I)</option>
        <option value="Xle-&gt;Ala (L)">Xle-&gt;Ala (L)</option>
        <option value="Xle-&gt;Arg (I)">Xle-&gt;Arg (I)</option>
        <option value="Xle-&gt;Arg (L)">Xle-&gt;Arg (L)</option>
        <option value="Xle-&gt;Asn (I)">Xle-&gt;Asn (I)</option>
        <option value="Xle-&gt;Asn (L)">Xle-&gt;Asn (L)</option>
        <option value="Xle-&gt;Asp (I)">Xle-&gt;Asp (I)</option>
        <option value="Xle-&gt;Asp (L)">Xle-&gt;Asp (L)</option>
        <option value="Xle-&gt;Cys (I)">Xle-&gt;Cys (I)</option>
        <option value="Xle-&gt;Cys (L)">Xle-&gt;Cys (L)</option>
        <option value="Xle-&gt;Gln (I)">Xle-&gt;Gln (I)</option>
        <option value="Xle-&gt;Gln (L)">Xle-&gt;Gln (L)</option>
        <option value="Xle-&gt;Glu (I)">Xle-&gt;Glu (I)</option>
        <option value="Xle-&gt;Glu (L)">Xle-&gt;Glu (L)</option>
        <option value="Xle-&gt;Gly (I)">Xle-&gt;Gly (I)</option>
        <option value="Xle-&gt;Gly (L)">Xle-&gt;Gly (L)</option>
        <option value="Xle-&gt;His (I)">Xle-&gt;His (I)</option>
        <option value="Xle-&gt;His (L)">Xle-&gt;His (L)</option>
        <option value="Xle-&gt;Lys (I)">Xle-&gt;Lys (I)</option>
        <option value="Xle-&gt;Lys (L)">Xle-&gt;Lys (L)</option>
        <option value="Xle-&gt;Met (I)">Xle-&gt;Met (I)</option>
        <option value="Xle-&gt;Met (L)">Xle-&gt;Met (L)</option>
        <option value="Xle-&gt;Phe (I)">Xle-&gt;Phe (I)</option>
        <option value="Xle-&gt;Phe (L)">Xle-&gt;Phe (L)</option>
        <option value="Xle-&gt;Pro (I)">Xle-&gt;Pro (I)</option>
        <option value="Xle-&gt;Pro (L)">Xle-&gt;Pro (L)</option>
        <option value="Xle-&gt;Ser (I)">Xle-&gt;Ser (I)</option>
        <option value="Xle-&gt;Ser (L)">Xle-&gt;Ser (L)</option>
        <option value="Xle-&gt;Thr (I)">Xle-&gt;Thr (I)</option>
        <option value="Xle-&gt;Thr (L)">Xle-&gt;Thr (L)</option>
        <option value="Xle-&gt;Trp (I)">Xle-&gt;Trp (I)</option>
        <option value="Xle-&gt;Trp (L)">Xle-&gt;Trp (L)</option>
        <option value="Xle-&gt;Tyr (I)">Xle-&gt;Tyr (I)</option>
        <option value="Xle-&gt;Tyr (L)">Xle-&gt;Tyr (L)</option>
        <option value="Xle-&gt;Val (I)">Xle-&gt;Val (I)</option>
        <option value="Xle-&gt;Val (L)">Xle-&gt;Val (L)</option>
        <option value="Xlink:B10621 (C)">Xlink:B10621 (C)</option>
        <option value="Xlink:DMP (K)">Xlink:DMP (K)</option>
        <option value="Xlink:DMP-de (K)">Xlink:DMP-de (K)</option>
        <option value="Xlink:DMP-s (K)">Xlink:DMP-s (K)</option>
        <option value="Xlink:DSS (K)">Xlink:DSS (K)</option>
        <option value="Xlink:DST (K)">Xlink:DST (K)</option>
        <option value="Xlink:DTSSP (K)">Xlink:DTSSP (K)</option>
        <option value="Xlink:EGS (K)">Xlink:EGS (K)</option>
        <option value="Xlink:EGScleaved (K)">Xlink:EGScleaved (K)</option>
        <option value="Xlink:SMCC (C)">Xlink:SMCC (C)</option>
        <option value="Xlink:SSD (K)">Xlink:SSD (K)</option>
        <option value="ZGB (K)">ZGB (K)</option>
        <option value="ZGB (N-term)">ZGB (N-term)</option>
        <option value="a-type-ion (C-term)">a-type-ion (C-term)</option>
        <option value="azole (C)">azole (C)</option>
        <option value="azole (S)">azole (S)</option>
        <option value="benzylguanidine (K)">benzylguanidine (K)</option>
        <option value="biotinAcrolein298 (C)">biotinAcrolein298 (C)</option>
        <option value="biotinAcrolein298 (H)">biotinAcrolein298 (H)</option>
        <option value="biotinAcrolein298 (K)">biotinAcrolein298 (K)</option>
        <option value="bisANS-sulfonates (K)">bisANS-sulfonates (K)</option>
        <option value="bisANS-sulfonates (S)">bisANS-sulfonates (S)</option>
        <option value="bisANS-sulfonates (T)">bisANS-sulfonates (T)</option>
        <option value="cGMP (C)">cGMP (C)</option>
        <option value="cGMP (S)">cGMP (S)</option>
        <option value="cGMP+RMP-loss (C)">cGMP+RMP-loss (C)</option>
        <option value="cGMP+RMP-loss (S)">cGMP+RMP-loss (S)</option>
        <option value="cysTMT (C)">cysTMT (C)</option>
        <option value="cysTMT6plex (C)">cysTMT6plex (C)</option>
        <option value="dHex (N)">dHex (N)</option>
        <option value="dHex (S)">dHex (S)</option>
        <option value="dHex (T)">dHex (T)</option>
        <option value="dHex(1)Hex(1) (S)">dHex(1)Hex(1) (S)</option>
        <option value="dHex(1)Hex(1) (T)">dHex(1)Hex(1) (T)</option>
        <option value="dHex(1)Hex(2) (S)">dHex(1)Hex(2) (S)</option>
        <option value="dHex(1)Hex(2) (T)">dHex(1)Hex(2) (T)</option>
        <option value="dHex(1)Hex(3) (S)">dHex(1)Hex(3) (S)</option>
        <option value="dHex(1)Hex(3) (T)">dHex(1)Hex(3) (T)</option>
        <option value="dHex(1)Hex(3)HexNAc(4) (N)">dHex(1)Hex(3)HexNAc(4) (N)</option>
        <option value="dHex(1)Hex(4) (S)">dHex(1)Hex(4) (S)</option>
        <option value="dHex(1)Hex(4) (T)">dHex(1)Hex(4) (T)</option>
        <option value="dHex(1)Hex(4)HexNAc(4) (N)">dHex(1)Hex(4)HexNAc(4) (N)</option>
        <option value="dHex(1)Hex(5) (S)">dHex(1)Hex(5) (S)</option>
        <option value="dHex(1)Hex(5) (T)">dHex(1)Hex(5) (T)</option>
        <option value="dHex(1)Hex(5)HexNAc(4) (N)">dHex(1)Hex(5)HexNAc(4) (N)</option>
        <option value="dHex(1)Hex(5)HexNAc(4)NeuAc(1) (N)">dHex(1)Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="dHex(1)Hex(5)HexNAc(4)NeuAc(2) (N)">dHex(1)Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="dHex(1)Hex(6) (S)">dHex(1)Hex(6) (S)</option>
        <option value="dHex(1)Hex(6) (T)">dHex(1)Hex(6) (T)</option>
        <option value="dNIC (K)">dNIC (K)</option>
        <option value="dNIC (N-term)">dNIC (N-term)</option>
        <option value="dichlorination (C)">dichlorination (C)</option>
        <option value="dichlorination (Y)">dichlorination (Y)</option>
        <option value="ethylamino (S)">ethylamino (S)</option>
        <option value="ethylamino (T)">ethylamino (T)</option>
        <option value="ethylsulfonylethyl (C)">ethylsulfonylethyl (C)</option>
        <option value="ethylsulfonylethyl (H)">ethylsulfonylethyl (H)</option>
        <option value="ethylsulfonylethyl (K)">ethylsulfonylethyl (K)</option>
        <option value="glucosone (R)">glucosone (R)</option>
        <option value="glycidamide (K)">glycidamide (K)</option>
        <option value="glycidamide (N-term)">glycidamide (N-term)</option>
        <option value="iTRAQ4plex (H)">iTRAQ4plex (H)</option>
        <option value="iTRAQ4plex (K)">iTRAQ4plex (K)</option>
        <option value="iTRAQ4plex (N-term)">iTRAQ4plex (N-term)</option>
        <option value="iTRAQ4plex (S)">iTRAQ4plex (S)</option>
        <option value="iTRAQ4plex (T)">iTRAQ4plex (T)</option>
        <option value="iTRAQ4plex (Y)">iTRAQ4plex (Y)</option>
        <option value="iTRAQ4plex114 (K)">iTRAQ4plex114 (K)</option>
        <option value="iTRAQ4plex114 (N-term)">iTRAQ4plex114 (N-term)</option>
        <option value="iTRAQ4plex114 (Y)">iTRAQ4plex114 (Y)</option>
        <option value="iTRAQ4plex115 (K)">iTRAQ4plex115 (K)</option>
        <option value="iTRAQ4plex115 (N-term)">iTRAQ4plex115 (N-term)</option>
        <option value="iTRAQ4plex115 (Y)">iTRAQ4plex115 (Y)</option>
        <option value="iTRAQ8plex (H)">iTRAQ8plex (H)</option>
        <option value="iTRAQ8plex (K)">iTRAQ8plex (K)</option>
        <option value="iTRAQ8plex (N-term)">iTRAQ8plex (N-term)</option>
        <option value="iTRAQ8plex (S)">iTRAQ8plex (S)</option>
        <option value="iTRAQ8plex (T)">iTRAQ8plex (T)</option>
        <option value="iTRAQ8plex (Y)">iTRAQ8plex (Y)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (K)">iTRAQ8plex:13C(6)15N(2) (K)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (N-term)">iTRAQ8plex:13C(6)15N(2) (N-term)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (Y)">iTRAQ8plex:13C(6)15N(2) (Y)</option>
        <option value="iodoTMT (C)">iodoTMT (C)</option>
        <option value="iodoTMT (D)">iodoTMT (D)</option>
        <option value="iodoTMT (E)">iodoTMT (E)</option>
        <option value="iodoTMT (H)">iodoTMT (H)</option>
        <option value="iodoTMT (K)">iodoTMT (K)</option>
        <option value="iodoTMT6plex (C)">iodoTMT6plex (C)</option>
        <option value="iodoTMT6plex (D)">iodoTMT6plex (D)</option>
        <option value="iodoTMT6plex (E)">iodoTMT6plex (E)</option>
        <option value="iodoTMT6plex (H)">iodoTMT6plex (H)</option>
        <option value="iodoTMT6plex (K)">iodoTMT6plex (K)</option>
        <option value="lapachenole (C)">lapachenole (C)</option>
        <option value="mTRAQ (H)">mTRAQ (H)</option>
        <option value="mTRAQ (K)">mTRAQ (K)</option>
        <option value="mTRAQ (N-term)">mTRAQ (N-term)</option>
        <option value="mTRAQ (S)">mTRAQ (S)</option>
        <option value="mTRAQ (T)">mTRAQ (T)</option>
        <option value="mTRAQ (Y)">mTRAQ (Y)</option>
        <option value="mTRAQ:13C(3)15N(1) (H)">mTRAQ:13C(3)15N(1) (H)</option>
        <option value="mTRAQ:13C(3)15N(1) (K)">mTRAQ:13C(3)15N(1) (K)</option>
        <option value="mTRAQ:13C(3)15N(1) (N-term)">mTRAQ:13C(3)15N(1) (N-term)</option>
        <option value="mTRAQ:13C(3)15N(1) (S)">mTRAQ:13C(3)15N(1) (S)</option>
        <option value="mTRAQ:13C(3)15N(1) (T)">mTRAQ:13C(3)15N(1) (T)</option>
        <option value="mTRAQ:13C(3)15N(1) (Y)">mTRAQ:13C(3)15N(1) (Y)</option>
        <option value="mTRAQ:13C(6)15N(2) (H)">mTRAQ:13C(6)15N(2) (H)</option>
        <option value="mTRAQ:13C(6)15N(2) (K)">mTRAQ:13C(6)15N(2) (K)</option>
        <option value="mTRAQ:13C(6)15N(2) (N-term)">mTRAQ:13C(6)15N(2) (N-term)</option>
        <option value="mTRAQ:13C(6)15N(2) (S)">mTRAQ:13C(6)15N(2) (S)</option>
        <option value="mTRAQ:13C(6)15N(2) (T)">mTRAQ:13C(6)15N(2) (T)</option>
        <option value="mTRAQ:13C(6)15N(2) (Y)">mTRAQ:13C(6)15N(2) (Y)</option>
        <option value="maleimide (C)">maleimide (C)</option>
        <option value="maleimide (K)">maleimide (K)</option>
        <option value="maleimide3 (C)">maleimide3 (C)</option>
        <option value="maleimide3 (K)">maleimide3 (K)</option>
        <option value="maleimide5 (C)">maleimide5 (C)</option>
        <option value="maleimide5 (K)">maleimide5 (K)</option>
        <option value="methylsulfonylethyl (C)">methylsulfonylethyl (C)</option>
        <option value="methylsulfonylethyl (H)">methylsulfonylethyl (H)</option>
        <option value="methylsulfonylethyl (K)">methylsulfonylethyl (K)</option>
        <option value="phenylsulfonylethyl (C)">phenylsulfonylethyl (C)</option>
        <option value="phosphoRibosyl (D)">phosphoRibosyl (D)</option>
        <option value="phosphoRibosyl (E)">phosphoRibosyl (E)</option>
        <option value="phosphoRibosyl (R)">phosphoRibosyl (R)</option>
        <option value="probiotinhydrazide (P)">probiotinhydrazide (P)</option>
        <option value="pupylation (K)">pupylation (K)</option>
        <option value="pyrophospho (S)">pyrophospho (S)</option>
        <option value="pyrophospho (T)">pyrophospho (T)</option>
        <option value="sulfo+amino (Y)">sulfo+amino (Y)</option>
        <option value="thioacylPA (K)">thioacylPA (K)</option>
        <option value="trifluoro (L)">trifluoro (L)</option>
      </param>
    </repeat>
    <repeat name="rep_param_Mascot_parameters_variable_modifications" min="0" max="1" title="param_Mascot_parameters_variable_modifications">
      <param name="param_Mascot_parameters_variable_modifications" type="select" optional="True" label="Variable modifications given as UniMod definitions" help="(-variable_modifications) ">
        <option value="2-dimethylsuccinyl (C)">2-dimethylsuccinyl (C)</option>
        <option value="2-monomethylsuccinyl (C)">2-monomethylsuccinyl (C)</option>
        <option value="2-nitrobenzyl (Y)">2-nitrobenzyl (Y)</option>
        <option value="2-succinyl (C)">2-succinyl (C)</option>
        <option value="2HPG (R)">2HPG (R)</option>
        <option value="3-deoxyglucosone (R)">3-deoxyglucosone (R)</option>
        <option value="3-phosphoglyceryl (K)">3-phosphoglyceryl (K)</option>
        <option value="3sulfo (N-term)">3sulfo (N-term)</option>
        <option value="4-ONE (C)">4-ONE (C)</option>
        <option value="4-ONE (H)">4-ONE (H)</option>
        <option value="4-ONE (K)">4-ONE (K)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (C)">4-ONE+Delta:H(-2)O(-1) (C)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (H)">4-ONE+Delta:H(-2)O(-1) (H)</option>
        <option value="4-ONE+Delta:H(-2)O(-1) (K)">4-ONE+Delta:H(-2)O(-1) (K)</option>
        <option value="4AcAllylGal (C)">4AcAllylGal (C)</option>
        <option value="ADP-Ribosyl (C)">ADP-Ribosyl (C)</option>
        <option value="ADP-Ribosyl (D)">ADP-Ribosyl (D)</option>
        <option value="ADP-Ribosyl (E)">ADP-Ribosyl (E)</option>
        <option value="ADP-Ribosyl (K)">ADP-Ribosyl (K)</option>
        <option value="ADP-Ribosyl (N)">ADP-Ribosyl (N)</option>
        <option value="ADP-Ribosyl (R)">ADP-Ribosyl (R)</option>
        <option value="ADP-Ribosyl (S)">ADP-Ribosyl (S)</option>
        <option value="AEBS (H)">AEBS (H)</option>
        <option value="AEBS (K)">AEBS (K)</option>
        <option value="AEBS (S)">AEBS (S)</option>
        <option value="AEBS (Y)">AEBS (Y)</option>
        <option value="AEC-MAEC (S)">AEC-MAEC (S)</option>
        <option value="AEC-MAEC (T)">AEC-MAEC (T)</option>
        <option value="AEC-MAEC:2H(4) (S)">AEC-MAEC:2H(4) (S)</option>
        <option value="AEC-MAEC:2H(4) (T)">AEC-MAEC:2H(4) (T)</option>
        <option value="AHA-Alkyne (M)">AHA-Alkyne (M)</option>
        <option value="AHA-Alkyne-KDDDD (M)">AHA-Alkyne-KDDDD (M)</option>
        <option value="AHA-SS (M)">AHA-SS (M)</option>
        <option value="AHA-SS_CAM (M)">AHA-SS_CAM (M)</option>
        <option value="AMTzHexNAc2 (N)">AMTzHexNAc2 (N)</option>
        <option value="AMTzHexNAc2 (S)">AMTzHexNAc2 (S)</option>
        <option value="AMTzHexNAc2 (T)">AMTzHexNAc2 (T)</option>
        <option value="AROD (C)">AROD (C)</option>
        <option value="AccQTag (K)">AccQTag (K)</option>
        <option value="AccQTag (N-term)">AccQTag (N-term)</option>
        <option value="Acetyl (C)">Acetyl (C)</option>
        <option value="Acetyl (H)">Acetyl (H)</option>
        <option value="Acetyl (K)">Acetyl (K)</option>
        <option value="Acetyl (N-term)">Acetyl (N-term)</option>
        <option value="Acetyl (S)">Acetyl (S)</option>
        <option value="Acetyl (T)">Acetyl (T)</option>
        <option value="Acetyl (Y)">Acetyl (Y)</option>
        <option value="Acetyl:13C(2) (K)">Acetyl:13C(2) (K)</option>
        <option value="Acetyl:2H(3) (H)">Acetyl:2H(3) (H)</option>
        <option value="Acetyl:2H(3) (K)">Acetyl:2H(3) (K)</option>
        <option value="Acetyl:2H(3) (N-term)">Acetyl:2H(3) (N-term)</option>
        <option value="Acetyl:2H(3) (S)">Acetyl:2H(3) (S)</option>
        <option value="Acetyl:2H(3) (T)">Acetyl:2H(3) (T)</option>
        <option value="Acetyl:2H(3) (Y)">Acetyl:2H(3) (Y)</option>
        <option value="Acetyldeoxyhypusine (K)">Acetyldeoxyhypusine (K)</option>
        <option value="Acetylhypusine (K)">Acetylhypusine (K)</option>
        <option value="Ahx2+Hsl (C-term)">Ahx2+Hsl (C-term)</option>
        <option value="Ala-&gt;Arg (A)">Ala-&gt;Arg (A)</option>
        <option value="Ala-&gt;Asn (A)">Ala-&gt;Asn (A)</option>
        <option value="Ala-&gt;Asp (A)">Ala-&gt;Asp (A)</option>
        <option value="Ala-&gt;Cys (A)">Ala-&gt;Cys (A)</option>
        <option value="Ala-&gt;Gln (A)">Ala-&gt;Gln (A)</option>
        <option value="Ala-&gt;Glu (A)">Ala-&gt;Glu (A)</option>
        <option value="Ala-&gt;Gly (A)">Ala-&gt;Gly (A)</option>
        <option value="Ala-&gt;His (A)">Ala-&gt;His (A)</option>
        <option value="Ala-&gt;Lys (A)">Ala-&gt;Lys (A)</option>
        <option value="Ala-&gt;Met (A)">Ala-&gt;Met (A)</option>
        <option value="Ala-&gt;Phe (A)">Ala-&gt;Phe (A)</option>
        <option value="Ala-&gt;Pro (A)">Ala-&gt;Pro (A)</option>
        <option value="Ala-&gt;Ser (A)">Ala-&gt;Ser (A)</option>
        <option value="Ala-&gt;Thr (A)">Ala-&gt;Thr (A)</option>
        <option value="Ala-&gt;Trp (A)">Ala-&gt;Trp (A)</option>
        <option value="Ala-&gt;Tyr (A)">Ala-&gt;Tyr (A)</option>
        <option value="Ala-&gt;Val (A)">Ala-&gt;Val (A)</option>
        <option value="Ala-&gt;Xle (A)">Ala-&gt;Xle (A)</option>
        <option value="Amidated (C-term)">Amidated (C-term)</option>
        <option value="Amidine (K)">Amidine (K)</option>
        <option value="Amidine (N-term)">Amidine (N-term)</option>
        <option value="Amidino (C)">Amidino (C)</option>
        <option value="Amino (Y)">Amino (Y)</option>
        <option value="Ammonia-loss (N)">Ammonia-loss (N)</option>
        <option value="Ammonia-loss (N-term C)">Ammonia-loss (N-term C)</option>
        <option value="Ammonium (C-term)">Ammonium (C-term)</option>
        <option value="Ammonium (D)">Ammonium (D)</option>
        <option value="Ammonium (E)">Ammonium (E)</option>
        <option value="Archaeol (C)">Archaeol (C)</option>
        <option value="Arg (N-term)">Arg (N-term)</option>
        <option value="Arg-&gt;Ala (R)">Arg-&gt;Ala (R)</option>
        <option value="Arg-&gt;Asn (R)">Arg-&gt;Asn (R)</option>
        <option value="Arg-&gt;Asp (R)">Arg-&gt;Asp (R)</option>
        <option value="Arg-&gt;Cys (R)">Arg-&gt;Cys (R)</option>
        <option value="Arg-&gt;Gln (R)">Arg-&gt;Gln (R)</option>
        <option value="Arg-&gt;Glu (R)">Arg-&gt;Glu (R)</option>
        <option value="Arg-&gt;GluSA (R)">Arg-&gt;GluSA (R)</option>
        <option value="Arg-&gt;Gly (R)">Arg-&gt;Gly (R)</option>
        <option value="Arg-&gt;His (R)">Arg-&gt;His (R)</option>
        <option value="Arg-&gt;Lys (R)">Arg-&gt;Lys (R)</option>
        <option value="Arg-&gt;Met (R)">Arg-&gt;Met (R)</option>
        <option value="Arg-&gt;Npo (R)">Arg-&gt;Npo (R)</option>
        <option value="Arg-&gt;Orn (R)">Arg-&gt;Orn (R)</option>
        <option value="Arg-&gt;Phe (R)">Arg-&gt;Phe (R)</option>
        <option value="Arg-&gt;Pro (R)">Arg-&gt;Pro (R)</option>
        <option value="Arg-&gt;Ser (R)">Arg-&gt;Ser (R)</option>
        <option value="Arg-&gt;Thr (R)">Arg-&gt;Thr (R)</option>
        <option value="Arg-&gt;Trp (R)">Arg-&gt;Trp (R)</option>
        <option value="Arg-&gt;Tyr (R)">Arg-&gt;Tyr (R)</option>
        <option value="Arg-&gt;Val (R)">Arg-&gt;Val (R)</option>
        <option value="Arg-&gt;Xle (R)">Arg-&gt;Xle (R)</option>
        <option value="Arg-loss (C-term R)">Arg-loss (C-term R)</option>
        <option value="Arg2PG (R)">Arg2PG (R)</option>
        <option value="Argbiotinhydrazide (R)">Argbiotinhydrazide (R)</option>
        <option value="Asn-&gt;Ala (N)">Asn-&gt;Ala (N)</option>
        <option value="Asn-&gt;Arg (N)">Asn-&gt;Arg (N)</option>
        <option value="Asn-&gt;Asp (N)">Asn-&gt;Asp (N)</option>
        <option value="Asn-&gt;Cys (N)">Asn-&gt;Cys (N)</option>
        <option value="Asn-&gt;Gln (N)">Asn-&gt;Gln (N)</option>
        <option value="Asn-&gt;Glu (N)">Asn-&gt;Glu (N)</option>
        <option value="Asn-&gt;Gly (N)">Asn-&gt;Gly (N)</option>
        <option value="Asn-&gt;His (N)">Asn-&gt;His (N)</option>
        <option value="Asn-&gt;Lys (N)">Asn-&gt;Lys (N)</option>
        <option value="Asn-&gt;Met (N)">Asn-&gt;Met (N)</option>
        <option value="Asn-&gt;Phe (N)">Asn-&gt;Phe (N)</option>
        <option value="Asn-&gt;Pro (N)">Asn-&gt;Pro (N)</option>
        <option value="Asn-&gt;Ser (N)">Asn-&gt;Ser (N)</option>
        <option value="Asn-&gt;Thr (N)">Asn-&gt;Thr (N)</option>
        <option value="Asn-&gt;Trp (N)">Asn-&gt;Trp (N)</option>
        <option value="Asn-&gt;Tyr (N)">Asn-&gt;Tyr (N)</option>
        <option value="Asn-&gt;Val (N)">Asn-&gt;Val (N)</option>
        <option value="Asn-&gt;Xle (N)">Asn-&gt;Xle (N)</option>
        <option value="Asp-&gt;Ala (D)">Asp-&gt;Ala (D)</option>
        <option value="Asp-&gt;Arg (D)">Asp-&gt;Arg (D)</option>
        <option value="Asp-&gt;Asn (D)">Asp-&gt;Asn (D)</option>
        <option value="Asp-&gt;Cys (D)">Asp-&gt;Cys (D)</option>
        <option value="Asp-&gt;Gln (D)">Asp-&gt;Gln (D)</option>
        <option value="Asp-&gt;Glu (D)">Asp-&gt;Glu (D)</option>
        <option value="Asp-&gt;Gly (D)">Asp-&gt;Gly (D)</option>
        <option value="Asp-&gt;His (D)">Asp-&gt;His (D)</option>
        <option value="Asp-&gt;Lys (D)">Asp-&gt;Lys (D)</option>
        <option value="Asp-&gt;Met (D)">Asp-&gt;Met (D)</option>
        <option value="Asp-&gt;Phe (D)">Asp-&gt;Phe (D)</option>
        <option value="Asp-&gt;Pro (D)">Asp-&gt;Pro (D)</option>
        <option value="Asp-&gt;Ser (D)">Asp-&gt;Ser (D)</option>
        <option value="Asp-&gt;Thr (D)">Asp-&gt;Thr (D)</option>
        <option value="Asp-&gt;Trp (D)">Asp-&gt;Trp (D)</option>
        <option value="Asp-&gt;Tyr (D)">Asp-&gt;Tyr (D)</option>
        <option value="Asp-&gt;Val (D)">Asp-&gt;Val (D)</option>
        <option value="Asp-&gt;Xle (D)">Asp-&gt;Xle (D)</option>
        <option value="Atto495Maleimide (C)">Atto495Maleimide (C)</option>
        <option value="BADGE (C)">BADGE (C)</option>
        <option value="BDMAPP (H)">BDMAPP (H)</option>
        <option value="BDMAPP (K)">BDMAPP (K)</option>
        <option value="BDMAPP (W)">BDMAPP (W)</option>
        <option value="BDMAPP (Y)">BDMAPP (Y)</option>
        <option value="BHAc (K)">BHAc (K)</option>
        <option value="BHT (C)">BHT (C)</option>
        <option value="BHT (H)">BHT (H)</option>
        <option value="BHT (K)">BHT (K)</option>
        <option value="BHTOH (C)">BHTOH (C)</option>
        <option value="BHTOH (H)">BHTOH (H)</option>
        <option value="BHTOH (K)">BHTOH (K)</option>
        <option value="BITC (C)">BITC (C)</option>
        <option value="BITC (K)">BITC (K)</option>
        <option value="BITC (N-term)">BITC (N-term)</option>
        <option value="BMOE (C)">BMOE (C)</option>
        <option value="BMP-piperidinol (C)">BMP-piperidinol (C)</option>
        <option value="BMP-piperidinol (M)">BMP-piperidinol (M)</option>
        <option value="Bacillosamine (N)">Bacillosamine (N)</option>
        <option value="Benzoyl (K)">Benzoyl (K)</option>
        <option value="Benzoyl (N-term)">Benzoyl (N-term)</option>
        <option value="Biotin (K)">Biotin (K)</option>
        <option value="Biotin (N-term)">Biotin (N-term)</option>
        <option value="Biotin-HPDP (C)">Biotin-HPDP (C)</option>
        <option value="Biotin-PEG-PRA (M)">Biotin-PEG-PRA (M)</option>
        <option value="Biotin-PEO-Amine (D)">Biotin-PEO-Amine (D)</option>
        <option value="Biotin-PEO-Amine (E)">Biotin-PEO-Amine (E)</option>
        <option value="Biotin-phenacyl (C)">Biotin-phenacyl (C)</option>
        <option value="Biotin-phenacyl (H)">Biotin-phenacyl (H)</option>
        <option value="Biotin-phenacyl (S)">Biotin-phenacyl (S)</option>
        <option value="Biotin:Cayman-10013 (C)">Biotin:Cayman-10013 (C)</option>
        <option value="Biotin:Cayman-10141 (C)">Biotin:Cayman-10141 (C)</option>
        <option value="Biotin:Invitrogen-M1602 (C)">Biotin:Invitrogen-M1602 (C)</option>
        <option value="Biotin:Sigma-B1267 (C)">Biotin:Sigma-B1267 (C)</option>
        <option value="Biotin:Thermo-21325 (K)">Biotin:Thermo-21325 (K)</option>
        <option value="Biotin:Thermo-21345 (Q)">Biotin:Thermo-21345 (Q)</option>
        <option value="Biotin:Thermo-21360 (C-term)">Biotin:Thermo-21360 (C-term)</option>
        <option value="Biotin:Thermo-21901+2H2O (C)">Biotin:Thermo-21901+2H2O (C)</option>
        <option value="Biotin:Thermo-21901+H2O (C)">Biotin:Thermo-21901+H2O (C)</option>
        <option value="Biotin:Thermo-21911 (C)">Biotin:Thermo-21911 (C)</option>
        <option value="Biotin:Thermo-33033 (N-term)">Biotin:Thermo-33033 (N-term)</option>
        <option value="Biotin:Thermo-33033-H (N-term)">Biotin:Thermo-33033-H (N-term)</option>
        <option value="Biotin:Thermo-88310 (K)">Biotin:Thermo-88310 (K)</option>
        <option value="Biotin:Thermo-88317 (S)">Biotin:Thermo-88317 (S)</option>
        <option value="Biotin:Thermo-88317 (Y)">Biotin:Thermo-88317 (Y)</option>
        <option value="BisANS (K)">BisANS (K)</option>
        <option value="Bodipy (C)">Bodipy (C)</option>
        <option value="Bromo (F)">Bromo (F)</option>
        <option value="Bromo (H)">Bromo (H)</option>
        <option value="Bromo (W)">Bromo (W)</option>
        <option value="Bromo (Y)">Bromo (Y)</option>
        <option value="Bromobimane (C)">Bromobimane (C)</option>
        <option value="Butyryl (K)">Butyryl (K)</option>
        <option value="C8-QAT (K)">C8-QAT (K)</option>
        <option value="C8-QAT (N-term)">C8-QAT (N-term)</option>
        <option value="CAF (N-term)">CAF (N-term)</option>
        <option value="CAMthiopropanoyl (K)">CAMthiopropanoyl (K)</option>
        <option value="CHDH (D)">CHDH (D)</option>
        <option value="CLIP_TRAQ_2 (K)">CLIP_TRAQ_2 (K)</option>
        <option value="CLIP_TRAQ_2 (N-term)">CLIP_TRAQ_2 (N-term)</option>
        <option value="CLIP_TRAQ_2 (Y)">CLIP_TRAQ_2 (Y)</option>
        <option value="CLIP_TRAQ_3 (K)">CLIP_TRAQ_3 (K)</option>
        <option value="CLIP_TRAQ_3 (N-term)">CLIP_TRAQ_3 (N-term)</option>
        <option value="CLIP_TRAQ_3 (Y)">CLIP_TRAQ_3 (Y)</option>
        <option value="CLIP_TRAQ_4 (K)">CLIP_TRAQ_4 (K)</option>
        <option value="CLIP_TRAQ_4 (N-term)">CLIP_TRAQ_4 (N-term)</option>
        <option value="CLIP_TRAQ_4 (Y)">CLIP_TRAQ_4 (Y)</option>
        <option value="Can-FP-biotin (S)">Can-FP-biotin (S)</option>
        <option value="Can-FP-biotin (T)">Can-FP-biotin (T)</option>
        <option value="Can-FP-biotin (Y)">Can-FP-biotin (Y)</option>
        <option value="Carbamidomethyl (C)">Carbamidomethyl (C)</option>
        <option value="Carbamidomethyl (D)">Carbamidomethyl (D)</option>
        <option value="Carbamidomethyl (E)">Carbamidomethyl (E)</option>
        <option value="Carbamidomethyl (H)">Carbamidomethyl (H)</option>
        <option value="Carbamidomethyl (K)">Carbamidomethyl (K)</option>
        <option value="Carbamidomethyl (N-term)">Carbamidomethyl (N-term)</option>
        <option value="Carbamidomethyl (S)">Carbamidomethyl (S)</option>
        <option value="Carbamidomethyl (T)">Carbamidomethyl (T)</option>
        <option value="Carbamidomethyl (Y)">Carbamidomethyl (Y)</option>
        <option value="CarbamidomethylDTT (C)">CarbamidomethylDTT (C)</option>
        <option value="Carbamyl (C)">Carbamyl (C)</option>
        <option value="Carbamyl (K)">Carbamyl (K)</option>
        <option value="Carbamyl (M)">Carbamyl (M)</option>
        <option value="Carbamyl (N-term)">Carbamyl (N-term)</option>
        <option value="Carbamyl (R)">Carbamyl (R)</option>
        <option value="Carbamyl (S)">Carbamyl (S)</option>
        <option value="Carbamyl (T)">Carbamyl (T)</option>
        <option value="Carbamyl (Y)">Carbamyl (Y)</option>
        <option value="Carbofuran (S)">Carbofuran (S)</option>
        <option value="Carboxy (D)">Carboxy (D)</option>
        <option value="Carboxy (E)">Carboxy (E)</option>
        <option value="Carboxy (K)">Carboxy (K)</option>
        <option value="Carboxy (W)">Carboxy (W)</option>
        <option value="Carboxyethyl (H)">Carboxyethyl (H)</option>
        <option value="Carboxyethyl (K)">Carboxyethyl (K)</option>
        <option value="Carboxymethyl (C)">Carboxymethyl (C)</option>
        <option value="Carboxymethyl (K)">Carboxymethyl (K)</option>
        <option value="Carboxymethyl (N-term)">Carboxymethyl (N-term)</option>
        <option value="Carboxymethyl (W)">Carboxymethyl (W)</option>
        <option value="Carboxymethyl:13C(2) (C)">Carboxymethyl:13C(2) (C)</option>
        <option value="CarboxymethylDMAP (N-term)">CarboxymethylDMAP (N-term)</option>
        <option value="CarboxymethylDTT (C)">CarboxymethylDTT (C)</option>
        <option value="Cation:Ag (C-term)">Cation:Ag (C-term)</option>
        <option value="Cation:Ag (D)">Cation:Ag (D)</option>
        <option value="Cation:Ag (E)">Cation:Ag (E)</option>
        <option value="Cation:Ca[II] (C-term)">Cation:Ca[II] (C-term)</option>
        <option value="Cation:Ca[II] (D)">Cation:Ca[II] (D)</option>
        <option value="Cation:Ca[II] (E)">Cation:Ca[II] (E)</option>
        <option value="Cation:Cu[I] (C-term)">Cation:Cu[I] (C-term)</option>
        <option value="Cation:Cu[I] (D)">Cation:Cu[I] (D)</option>
        <option value="Cation:Cu[I] (E)">Cation:Cu[I] (E)</option>
        <option value="Cation:Fe[II] (C-term)">Cation:Fe[II] (C-term)</option>
        <option value="Cation:Fe[II] (D)">Cation:Fe[II] (D)</option>
        <option value="Cation:Fe[II] (E)">Cation:Fe[II] (E)</option>
        <option value="Cation:K (C-term)">Cation:K (C-term)</option>
        <option value="Cation:K (D)">Cation:K (D)</option>
        <option value="Cation:K (E)">Cation:K (E)</option>
        <option value="Cation:Li (C-term)">Cation:Li (C-term)</option>
        <option value="Cation:Li (D)">Cation:Li (D)</option>
        <option value="Cation:Li (E)">Cation:Li (E)</option>
        <option value="Cation:Mg[II] (C-term)">Cation:Mg[II] (C-term)</option>
        <option value="Cation:Mg[II] (D)">Cation:Mg[II] (D)</option>
        <option value="Cation:Mg[II] (E)">Cation:Mg[II] (E)</option>
        <option value="Cation:Na (C-term)">Cation:Na (C-term)</option>
        <option value="Cation:Na (D)">Cation:Na (D)</option>
        <option value="Cation:Na (E)">Cation:Na (E)</option>
        <option value="Cation:Ni[II] (C-term)">Cation:Ni[II] (C-term)</option>
        <option value="Cation:Ni[II] (D)">Cation:Ni[II] (D)</option>
        <option value="Cation:Ni[II] (E)">Cation:Ni[II] (E)</option>
        <option value="Cation:Zn[II] (C-term)">Cation:Zn[II] (C-term)</option>
        <option value="Cation:Zn[II] (D)">Cation:Zn[II] (D)</option>
        <option value="Cation:Zn[II] (E)">Cation:Zn[II] (E)</option>
        <option value="Chlorination (Y)">Chlorination (Y)</option>
        <option value="Chlorpyrifos (S)">Chlorpyrifos (S)</option>
        <option value="Chlorpyrifos (T)">Chlorpyrifos (T)</option>
        <option value="Chlorpyrifos (Y)">Chlorpyrifos (Y)</option>
        <option value="CoenzymeA (C)">CoenzymeA (C)</option>
        <option value="CresylSaligeninPhosphate (H)">CresylSaligeninPhosphate (H)</option>
        <option value="CresylSaligeninPhosphate (K)">CresylSaligeninPhosphate (K)</option>
        <option value="CresylSaligeninPhosphate (R)">CresylSaligeninPhosphate (R)</option>
        <option value="CresylSaligeninPhosphate (S)">CresylSaligeninPhosphate (S)</option>
        <option value="CresylSaligeninPhosphate (T)">CresylSaligeninPhosphate (T)</option>
        <option value="CresylSaligeninPhosphate (Y)">CresylSaligeninPhosphate (Y)</option>
        <option value="Cresylphosphate (H)">Cresylphosphate (H)</option>
        <option value="Cresylphosphate (K)">Cresylphosphate (K)</option>
        <option value="Cresylphosphate (R)">Cresylphosphate (R)</option>
        <option value="Cresylphosphate (S)">Cresylphosphate (S)</option>
        <option value="Cresylphosphate (T)">Cresylphosphate (T)</option>
        <option value="Cresylphosphate (Y)">Cresylphosphate (Y)</option>
        <option value="Crotonaldehyde (C)">Crotonaldehyde (C)</option>
        <option value="Crotonaldehyde (H)">Crotonaldehyde (H)</option>
        <option value="Crotonaldehyde (K)">Crotonaldehyde (K)</option>
        <option value="Crotonyl (K)">Crotonyl (K)</option>
        <option value="CuSMo (C)">CuSMo (C)</option>
        <option value="Cy3-maleimide (C)">Cy3-maleimide (C)</option>
        <option value="Cy3b-maleimide (C)">Cy3b-maleimide (C)</option>
        <option value="CyDye-Cy3 (C)">CyDye-Cy3 (C)</option>
        <option value="CyDye-Cy5 (C)">CyDye-Cy5 (C)</option>
        <option value="Cyano (C)">Cyano (C)</option>
        <option value="Cys-&gt;Ala (C)">Cys-&gt;Ala (C)</option>
        <option value="Cys-&gt;Arg (C)">Cys-&gt;Arg (C)</option>
        <option value="Cys-&gt;Asn (C)">Cys-&gt;Asn (C)</option>
        <option value="Cys-&gt;Asp (C)">Cys-&gt;Asp (C)</option>
        <option value="Cys-&gt;Dha (C)">Cys-&gt;Dha (C)</option>
        <option value="Cys-&gt;Gln (C)">Cys-&gt;Gln (C)</option>
        <option value="Cys-&gt;Glu (C)">Cys-&gt;Glu (C)</option>
        <option value="Cys-&gt;Gly (C)">Cys-&gt;Gly (C)</option>
        <option value="Cys-&gt;His (C)">Cys-&gt;His (C)</option>
        <option value="Cys-&gt;Lys (C)">Cys-&gt;Lys (C)</option>
        <option value="Cys-&gt;Met (C)">Cys-&gt;Met (C)</option>
        <option value="Cys-&gt;Oxoalanine (C)">Cys-&gt;Oxoalanine (C)</option>
        <option value="Cys-&gt;Phe (C)">Cys-&gt;Phe (C)</option>
        <option value="Cys-&gt;Pro (C)">Cys-&gt;Pro (C)</option>
        <option value="Cys-&gt;Ser (C)">Cys-&gt;Ser (C)</option>
        <option value="Cys-&gt;Thr (C)">Cys-&gt;Thr (C)</option>
        <option value="Cys-&gt;Trp (C)">Cys-&gt;Trp (C)</option>
        <option value="Cys-&gt;Tyr (C)">Cys-&gt;Tyr (C)</option>
        <option value="Cys-&gt;Val (C)">Cys-&gt;Val (C)</option>
        <option value="Cys-&gt;Xle (C)">Cys-&gt;Xle (C)</option>
        <option value="Cys-&gt;ethylaminoAla (C)">Cys-&gt;ethylaminoAla (C)</option>
        <option value="Cys-&gt;methylaminoAla (C)">Cys-&gt;methylaminoAla (C)</option>
        <option value="Cysteinyl (C)">Cysteinyl (C)</option>
        <option value="Cytopiloyne (C)">Cytopiloyne (C)</option>
        <option value="Cytopiloyne (K)">Cytopiloyne (K)</option>
        <option value="Cytopiloyne (N-term)">Cytopiloyne (N-term)</option>
        <option value="Cytopiloyne (P)">Cytopiloyne (P)</option>
        <option value="Cytopiloyne (R)">Cytopiloyne (R)</option>
        <option value="Cytopiloyne (S)">Cytopiloyne (S)</option>
        <option value="Cytopiloyne (Y)">Cytopiloyne (Y)</option>
        <option value="Cytopiloyne+water (C)">Cytopiloyne+water (C)</option>
        <option value="Cytopiloyne+water (K)">Cytopiloyne+water (K)</option>
        <option value="Cytopiloyne+water (N-term)">Cytopiloyne+water (N-term)</option>
        <option value="Cytopiloyne+water (R)">Cytopiloyne+water (R)</option>
        <option value="Cytopiloyne+water (S)">Cytopiloyne+water (S)</option>
        <option value="Cytopiloyne+water (T)">Cytopiloyne+water (T)</option>
        <option value="Cytopiloyne+water (Y)">Cytopiloyne+water (Y)</option>
        <option value="DAET (S)">DAET (S)</option>
        <option value="DAET (T)">DAET (T)</option>
        <option value="DEDGFLYMVYASQETFG (K)">DEDGFLYMVYASQETFG (K)</option>
        <option value="DFDNB (K)">DFDNB (K)</option>
        <option value="DFDNB (N)">DFDNB (N)</option>
        <option value="DFDNB (Q)">DFDNB (Q)</option>
        <option value="DFDNB (R)">DFDNB (R)</option>
        <option value="DHP (C)">DHP (C)</option>
        <option value="DMPO (C)">DMPO (C)</option>
        <option value="DMPO (H)">DMPO (H)</option>
        <option value="DMPO (Y)">DMPO (Y)</option>
        <option value="DNCB_hapten (C)">DNCB_hapten (C)</option>
        <option value="DNCB_hapten (H)">DNCB_hapten (H)</option>
        <option value="DNCB_hapten (K)">DNCB_hapten (K)</option>
        <option value="DNCB_hapten (Y)">DNCB_hapten (Y)</option>
        <option value="DNPS (C)">DNPS (C)</option>
        <option value="DNPS (W)">DNPS (W)</option>
        <option value="DTBP (K)">DTBP (K)</option>
        <option value="DTBP (N)">DTBP (N)</option>
        <option value="DTBP (Q)">DTBP (Q)</option>
        <option value="DTBP (R)">DTBP (R)</option>
        <option value="DTT_C (C)">DTT_C (C)</option>
        <option value="DTT_C:2H(6) (C)">DTT_C:2H(6) (C)</option>
        <option value="DTT_ST (S)">DTT_ST (S)</option>
        <option value="DTT_ST (T)">DTT_ST (T)</option>
        <option value="DTT_ST:2H(6) (S)">DTT_ST:2H(6) (S)</option>
        <option value="DTT_ST:2H(6) (T)">DTT_ST:2H(6) (T)</option>
        <option value="Dansyl (K)">Dansyl (K)</option>
        <option value="Dansyl (N-term)">Dansyl (N-term)</option>
        <option value="Dap-DSP (A)">Dap-DSP (A)</option>
        <option value="Dap-DSP (E)">Dap-DSP (E)</option>
        <option value="Dap-DSP (K)">Dap-DSP (K)</option>
        <option value="DeStreak (C)">DeStreak (C)</option>
        <option value="Deamidated (N)">Deamidated (N)</option>
        <option value="Deamidated (Q)">Deamidated (Q)</option>
        <option value="Deamidated (R)">Deamidated (R)</option>
        <option value="Deamidated:18O(1) (N)">Deamidated:18O(1) (N)</option>
        <option value="Deamidated:18O(1) (Q)">Deamidated:18O(1) (Q)</option>
        <option value="Decanoyl (S)">Decanoyl (S)</option>
        <option value="Decanoyl (T)">Decanoyl (T)</option>
        <option value="Dehydrated (D)">Dehydrated (D)</option>
        <option value="Dehydrated (N-term C)">Dehydrated (N-term C)</option>
        <option value="Dehydrated (S)">Dehydrated (S)</option>
        <option value="Dehydrated (T)">Dehydrated (T)</option>
        <option value="Dehydrated (Y)">Dehydrated (Y)</option>
        <option value="Dehydro (C)">Dehydro (C)</option>
        <option value="Delta:H(1)N(-1)18O(1) (N)">Delta:H(1)N(-1)18O(1) (N)</option>
        <option value="Delta:H(2)C(2) (H)">Delta:H(2)C(2) (H)</option>
        <option value="Delta:H(2)C(2) (K)">Delta:H(2)C(2) (K)</option>
        <option value="Delta:H(2)C(2) (N-term)">Delta:H(2)C(2) (N-term)</option>
        <option value="Delta:H(2)C(3) (K)">Delta:H(2)C(3) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (K)">Delta:H(2)C(3)O(1) (K)</option>
        <option value="Delta:H(2)C(3)O(1) (R)">Delta:H(2)C(3)O(1) (R)</option>
        <option value="Delta:H(2)C(5) (K)">Delta:H(2)C(5) (K)</option>
        <option value="Delta:H(4)C(2) (H)">Delta:H(4)C(2) (H)</option>
        <option value="Delta:H(4)C(2) (K)">Delta:H(4)C(2) (K)</option>
        <option value="Delta:H(4)C(2) (N-term)">Delta:H(4)C(2) (N-term)</option>
        <option value="Delta:H(4)C(2)O(-1)S(1) (S)">Delta:H(4)C(2)O(-1)S(1) (S)</option>
        <option value="Delta:H(4)C(3) (H)">Delta:H(4)C(3) (H)</option>
        <option value="Delta:H(4)C(3) (K)">Delta:H(4)C(3) (K)</option>
        <option value="Delta:H(4)C(3)O(1) (C)">Delta:H(4)C(3)O(1) (C)</option>
        <option value="Delta:H(4)C(3)O(1) (H)">Delta:H(4)C(3)O(1) (H)</option>
        <option value="Delta:H(4)C(3)O(1) (K)">Delta:H(4)C(3)O(1) (K)</option>
        <option value="Delta:H(4)C(6) (K)">Delta:H(4)C(6) (K)</option>
        <option value="Delta:H(5)C(2) (P)">Delta:H(5)C(2) (P)</option>
        <option value="Delta:H(6)C(3)O(1) (C)">Delta:H(6)C(3)O(1) (C)</option>
        <option value="Delta:H(6)C(3)O(1) (H)">Delta:H(6)C(3)O(1) (H)</option>
        <option value="Delta:H(6)C(3)O(1) (K)">Delta:H(6)C(3)O(1) (K)</option>
        <option value="Delta:H(6)C(6)O(1) (K)">Delta:H(6)C(6)O(1) (K)</option>
        <option value="Delta:H(8)C(6)O(1) (L)">Delta:H(8)C(6)O(1) (L)</option>
        <option value="Delta:H(8)C(6)O(2) (K)">Delta:H(8)C(6)O(2) (K)</option>
        <option value="Delta:Hg(1) (C)">Delta:Hg(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (C)">Delta:S(-1)Se(1) (C)</option>
        <option value="Delta:S(-1)Se(1) (M)">Delta:S(-1)Se(1) (M)</option>
        <option value="Delta:Se(1) (C)">Delta:Se(1) (C)</option>
        <option value="Deoxy (D)">Deoxy (D)</option>
        <option value="Deoxy (S)">Deoxy (S)</option>
        <option value="Deoxy (T)">Deoxy (T)</option>
        <option value="Deoxyhypusine (K)">Deoxyhypusine (K)</option>
        <option value="Dethiomethyl (M)">Dethiomethyl (M)</option>
        <option value="DiART6plex (K)">DiART6plex (K)</option>
        <option value="DiART6plex (N-term)">DiART6plex (N-term)</option>
        <option value="DiART6plex (Y)">DiART6plex (Y)</option>
        <option value="DiART6plex115 (K)">DiART6plex115 (K)</option>
        <option value="DiART6plex115 (N-term)">DiART6plex115 (N-term)</option>
        <option value="DiART6plex115 (Y)">DiART6plex115 (Y)</option>
        <option value="DiART6plex116/119 (K)">DiART6plex116/119 (K)</option>
        <option value="DiART6plex116/119 (N-term)">DiART6plex116/119 (N-term)</option>
        <option value="DiART6plex116/119 (Y)">DiART6plex116/119 (Y)</option>
        <option value="DiART6plex117 (K)">DiART6plex117 (K)</option>
        <option value="DiART6plex117 (N-term)">DiART6plex117 (N-term)</option>
        <option value="DiART6plex117 (Y)">DiART6plex117 (Y)</option>
        <option value="DiART6plex118 (K)">DiART6plex118 (K)</option>
        <option value="DiART6plex118 (N-term)">DiART6plex118 (N-term)</option>
        <option value="DiART6plex118 (Y)">DiART6plex118 (Y)</option>
        <option value="DiLeu4plex (K)">DiLeu4plex (K)</option>
        <option value="DiLeu4plex (N-term)">DiLeu4plex (N-term)</option>
        <option value="DiLeu4plex (Y)">DiLeu4plex (Y)</option>
        <option value="DiLeu4plex115 (K)">DiLeu4plex115 (K)</option>
        <option value="DiLeu4plex115 (N-term)">DiLeu4plex115 (N-term)</option>
        <option value="DiLeu4plex115 (Y)">DiLeu4plex115 (Y)</option>
        <option value="DiLeu4plex117 (K)">DiLeu4plex117 (K)</option>
        <option value="DiLeu4plex117 (N-term)">DiLeu4plex117 (N-term)</option>
        <option value="DiLeu4plex117 (Y)">DiLeu4plex117 (Y)</option>
        <option value="DiLeu4plex118 (K)">DiLeu4plex118 (K)</option>
        <option value="DiLeu4plex118 (N-term)">DiLeu4plex118 (N-term)</option>
        <option value="DiLeu4plex118 (Y)">DiLeu4plex118 (Y)</option>
        <option value="Diacylglycerol (C)">Diacylglycerol (C)</option>
        <option value="Dibromo (Y)">Dibromo (Y)</option>
        <option value="Dicarbamidomethyl (C)">Dicarbamidomethyl (C)</option>
        <option value="Dicarbamidomethyl (H)">Dicarbamidomethyl (H)</option>
        <option value="Dicarbamidomethyl (K)">Dicarbamidomethyl (K)</option>
        <option value="Dicarbamidomethyl (N-term)">Dicarbamidomethyl (N-term)</option>
        <option value="Dicarbamidomethyl (R)">Dicarbamidomethyl (R)</option>
        <option value="Didehydro (C-term K)">Didehydro (C-term K)</option>
        <option value="Didehydro (S)">Didehydro (S)</option>
        <option value="Didehydro (T)">Didehydro (T)</option>
        <option value="Didehydro (Y)">Didehydro (Y)</option>
        <option value="Didehydroretinylidene (K)">Didehydroretinylidene (K)</option>
        <option value="Diethyl (K)">Diethyl (K)</option>
        <option value="Diethyl (N-term)">Diethyl (N-term)</option>
        <option value="Diethylphosphate (C)">Diethylphosphate (C)</option>
        <option value="Diethylphosphate (H)">Diethylphosphate (H)</option>
        <option value="Diethylphosphate (K)">Diethylphosphate (K)</option>
        <option value="Diethylphosphate (N-term)">Diethylphosphate (N-term)</option>
        <option value="Diethylphosphate (S)">Diethylphosphate (S)</option>
        <option value="Diethylphosphate (T)">Diethylphosphate (T)</option>
        <option value="Diethylphosphate (Y)">Diethylphosphate (Y)</option>
        <option value="Difuran (Y)">Difuran (Y)</option>
        <option value="Dihydroxyimidazolidine (R)">Dihydroxyimidazolidine (R)</option>
        <option value="Diiodo (H)">Diiodo (H)</option>
        <option value="Diiodo (Y)">Diiodo (Y)</option>
        <option value="Diironsubcluster (C)">Diironsubcluster (C)</option>
        <option value="Diisopropylphosphate (K)">Diisopropylphosphate (K)</option>
        <option value="Diisopropylphosphate (N-term)">Diisopropylphosphate (N-term)</option>
        <option value="Diisopropylphosphate (S)">Diisopropylphosphate (S)</option>
        <option value="Diisopropylphosphate (T)">Diisopropylphosphate (T)</option>
        <option value="Diisopropylphosphate (Y)">Diisopropylphosphate (Y)</option>
        <option value="Dimethyl (K)">Dimethyl (K)</option>
        <option value="Dimethyl (N)">Dimethyl (N)</option>
        <option value="Dimethyl (N-term)">Dimethyl (N-term)</option>
        <option value="Dimethyl (R)">Dimethyl (R)</option>
        <option value="Dimethyl:2H(4) (K)">Dimethyl:2H(4) (K)</option>
        <option value="Dimethyl:2H(4) (N-term)">Dimethyl:2H(4) (N-term)</option>
        <option value="Dimethyl:2H(4)13C(2) (K)">Dimethyl:2H(4)13C(2) (K)</option>
        <option value="Dimethyl:2H(4)13C(2) (N-term)">Dimethyl:2H(4)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6) (K)">Dimethyl:2H(6) (K)</option>
        <option value="Dimethyl:2H(6) (N-term)">Dimethyl:2H(6) (N-term)</option>
        <option value="Dimethyl:2H(6) (R)">Dimethyl:2H(6) (R)</option>
        <option value="Dimethyl:2H(6)13C(2) (K)">Dimethyl:2H(6)13C(2) (K)</option>
        <option value="Dimethyl:2H(6)13C(2) (N-term)">Dimethyl:2H(6)13C(2) (N-term)</option>
        <option value="Dimethyl:2H(6)13C(2) (R)">Dimethyl:2H(6)13C(2) (R)</option>
        <option value="DimethylArsino (C)">DimethylArsino (C)</option>
        <option value="DimethylamineGMBS (C)">DimethylamineGMBS (C)</option>
        <option value="DimethylpyrroleAdduct (K)">DimethylpyrroleAdduct (K)</option>
        <option value="Dioxidation (C)">Dioxidation (C)</option>
        <option value="Dioxidation (F)">Dioxidation (F)</option>
        <option value="Dioxidation (K)">Dioxidation (K)</option>
        <option value="Dioxidation (M)">Dioxidation (M)</option>
        <option value="Dioxidation (P)">Dioxidation (P)</option>
        <option value="Dioxidation (R)">Dioxidation (R)</option>
        <option value="Dioxidation (W)">Dioxidation (W)</option>
        <option value="Dioxidation (Y)">Dioxidation (Y)</option>
        <option value="Diphthamide (H)">Diphthamide (H)</option>
        <option value="Dipyridyl (C)">Dipyridyl (C)</option>
        <option value="Dipyrrolylmethanemethyl (C)">Dipyrrolylmethanemethyl (C)</option>
        <option value="DyLight-maleimide (C)">DyLight-maleimide (C)</option>
        <option value="EDEDTIDVFQQQTGG (K)">EDEDTIDVFQQQTGG (K)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (S)">EDT-iodoacetyl-PEO-biotin (S)</option>
        <option value="EDT-iodoacetyl-PEO-biotin (T)">EDT-iodoacetyl-PEO-biotin (T)</option>
        <option value="EDT-maleimide-PEO-biotin (S)">EDT-maleimide-PEO-biotin (S)</option>
        <option value="EDT-maleimide-PEO-biotin (T)">EDT-maleimide-PEO-biotin (T)</option>
        <option value="EEEDVIEVYQEQTGG (K)">EEEDVIEVYQEQTGG (K)</option>
        <option value="EGCG1 (C)">EGCG1 (C)</option>
        <option value="EGCG2 (C)">EGCG2 (C)</option>
        <option value="EHD-diphenylpentanone (C)">EHD-diphenylpentanone (C)</option>
        <option value="EHD-diphenylpentanone (M)">EHD-diphenylpentanone (M)</option>
        <option value="EQAT (C)">EQAT (C)</option>
        <option value="EQAT:2H(5) (C)">EQAT:2H(5) (C)</option>
        <option value="EQIGG (K)">EQIGG (K)</option>
        <option value="ESP (K)">ESP (K)</option>
        <option value="ESP (N-term)">ESP (N-term)</option>
        <option value="ESP:2H(10) (K)">ESP:2H(10) (K)</option>
        <option value="ESP:2H(10) (N-term)">ESP:2H(10) (N-term)</option>
        <option value="Ethanedithiol (S)">Ethanedithiol (S)</option>
        <option value="Ethanedithiol (T)">Ethanedithiol (T)</option>
        <option value="Ethanolamine (C)">Ethanolamine (C)</option>
        <option value="Ethanolamine (C-term)">Ethanolamine (C-term)</option>
        <option value="Ethanolamine (D)">Ethanolamine (D)</option>
        <option value="Ethanolamine (E)">Ethanolamine (E)</option>
        <option value="Ethanolyl (C)">Ethanolyl (C)</option>
        <option value="Ethanolyl (K)">Ethanolyl (K)</option>
        <option value="Ethanolyl (R)">Ethanolyl (R)</option>
        <option value="Ethoxyformyl (H)">Ethoxyformyl (H)</option>
        <option value="Ethyl (C-term)">Ethyl (C-term)</option>
        <option value="Ethyl (D)">Ethyl (D)</option>
        <option value="Ethyl (E)">Ethyl (E)</option>
        <option value="Ethyl (K)">Ethyl (K)</option>
        <option value="Ethyl (N-term)">Ethyl (N-term)</option>
        <option value="Ethyl+Deamidated (N)">Ethyl+Deamidated (N)</option>
        <option value="Ethyl+Deamidated (Q)">Ethyl+Deamidated (Q)</option>
        <option value="Ethylphosphate (K)">Ethylphosphate (K)</option>
        <option value="Ethylphosphate (N-term)">Ethylphosphate (N-term)</option>
        <option value="Ethylphosphate (S)">Ethylphosphate (S)</option>
        <option value="Ethylphosphate (T)">Ethylphosphate (T)</option>
        <option value="Ethylphosphate (Y)">Ethylphosphate (Y)</option>
        <option value="ExacTagAmine (K)">ExacTagAmine (K)</option>
        <option value="ExacTagThiol (C)">ExacTagThiol (C)</option>
        <option value="FAD (C)">FAD (C)</option>
        <option value="FAD (H)">FAD (H)</option>
        <option value="FAD (Y)">FAD (Y)</option>
        <option value="FMN (S)">FMN (S)</option>
        <option value="FMN (T)">FMN (T)</option>
        <option value="FMNC (C)">FMNC (C)</option>
        <option value="FMNH (C)">FMNH (C)</option>
        <option value="FMNH (H)">FMNH (H)</option>
        <option value="FNEM (C)">FNEM (C)</option>
        <option value="FP-Biotin (K)">FP-Biotin (K)</option>
        <option value="FP-Biotin (S)">FP-Biotin (S)</option>
        <option value="FP-Biotin (T)">FP-Biotin (T)</option>
        <option value="FP-Biotin (Y)">FP-Biotin (Y)</option>
        <option value="FTC (C)">FTC (C)</option>
        <option value="FTC (K)">FTC (K)</option>
        <option value="FTC (P)">FTC (P)</option>
        <option value="FTC (R)">FTC (R)</option>
        <option value="FTC (S)">FTC (S)</option>
        <option value="Farnesyl (C)">Farnesyl (C)</option>
        <option value="Fluorescein (C)">Fluorescein (C)</option>
        <option value="Fluoro (A)">Fluoro (A)</option>
        <option value="Fluoro (F)">Fluoro (F)</option>
        <option value="Fluoro (W)">Fluoro (W)</option>
        <option value="Fluoro (Y)">Fluoro (Y)</option>
        <option value="Formyl (K)">Formyl (K)</option>
        <option value="Formyl (N-term)">Formyl (N-term)</option>
        <option value="Formyl (S)">Formyl (S)</option>
        <option value="Formyl (T)">Formyl (T)</option>
        <option value="Furan (Y)">Furan (Y)</option>
        <option value="G-H1 (R)">G-H1 (R)</option>
        <option value="GG (C)">GG (C)</option>
        <option value="GG (K)">GG (K)</option>
        <option value="GG (S)">GG (S)</option>
        <option value="GG (T)">GG (T)</option>
        <option value="GGQ (K)">GGQ (K)</option>
        <option value="GIST-Quat (K)">GIST-Quat (K)</option>
        <option value="GIST-Quat (N-term)">GIST-Quat (N-term)</option>
        <option value="GIST-Quat:2H(3) (K)">GIST-Quat:2H(3) (K)</option>
        <option value="GIST-Quat:2H(3) (N-term)">GIST-Quat:2H(3) (N-term)</option>
        <option value="GIST-Quat:2H(6) (K)">GIST-Quat:2H(6) (K)</option>
        <option value="GIST-Quat:2H(6) (N-term)">GIST-Quat:2H(6) (N-term)</option>
        <option value="GIST-Quat:2H(9) (K)">GIST-Quat:2H(9) (K)</option>
        <option value="GIST-Quat:2H(9) (N-term)">GIST-Quat:2H(9) (N-term)</option>
        <option value="Galactosyl (K)">Galactosyl (K)</option>
        <option value="GeranylGeranyl (C)">GeranylGeranyl (C)</option>
        <option value="Gln-&gt;Ala (Q)">Gln-&gt;Ala (Q)</option>
        <option value="Gln-&gt;Arg (Q)">Gln-&gt;Arg (Q)</option>
        <option value="Gln-&gt;Asn (Q)">Gln-&gt;Asn (Q)</option>
        <option value="Gln-&gt;Asp (Q)">Gln-&gt;Asp (Q)</option>
        <option value="Gln-&gt;Cys (Q)">Gln-&gt;Cys (Q)</option>
        <option value="Gln-&gt;Glu (Q)">Gln-&gt;Glu (Q)</option>
        <option value="Gln-&gt;Gly (Q)">Gln-&gt;Gly (Q)</option>
        <option value="Gln-&gt;His (Q)">Gln-&gt;His (Q)</option>
        <option value="Gln-&gt;Lys (Q)">Gln-&gt;Lys (Q)</option>
        <option value="Gln-&gt;Met (Q)">Gln-&gt;Met (Q)</option>
        <option value="Gln-&gt;Phe (Q)">Gln-&gt;Phe (Q)</option>
        <option value="Gln-&gt;Pro (Q)">Gln-&gt;Pro (Q)</option>
        <option value="Gln-&gt;Ser (Q)">Gln-&gt;Ser (Q)</option>
        <option value="Gln-&gt;Thr (Q)">Gln-&gt;Thr (Q)</option>
        <option value="Gln-&gt;Trp (Q)">Gln-&gt;Trp (Q)</option>
        <option value="Gln-&gt;Tyr (Q)">Gln-&gt;Tyr (Q)</option>
        <option value="Gln-&gt;Val (Q)">Gln-&gt;Val (Q)</option>
        <option value="Gln-&gt;Xle (Q)">Gln-&gt;Xle (Q)</option>
        <option value="Gln-&gt;pyro-Glu (N-term Q)">Gln-&gt;pyro-Glu (N-term Q)</option>
        <option value="Glu (E)">Glu (E)</option>
        <option value="Glu-&gt;Ala (E)">Glu-&gt;Ala (E)</option>
        <option value="Glu-&gt;Arg (E)">Glu-&gt;Arg (E)</option>
        <option value="Glu-&gt;Asn (E)">Glu-&gt;Asn (E)</option>
        <option value="Glu-&gt;Asp (E)">Glu-&gt;Asp (E)</option>
        <option value="Glu-&gt;Cys (E)">Glu-&gt;Cys (E)</option>
        <option value="Glu-&gt;Gln (E)">Glu-&gt;Gln (E)</option>
        <option value="Glu-&gt;Gly (E)">Glu-&gt;Gly (E)</option>
        <option value="Glu-&gt;His (E)">Glu-&gt;His (E)</option>
        <option value="Glu-&gt;Lys (E)">Glu-&gt;Lys (E)</option>
        <option value="Glu-&gt;Met (E)">Glu-&gt;Met (E)</option>
        <option value="Glu-&gt;Phe (E)">Glu-&gt;Phe (E)</option>
        <option value="Glu-&gt;Pro (E)">Glu-&gt;Pro (E)</option>
        <option value="Glu-&gt;Ser (E)">Glu-&gt;Ser (E)</option>
        <option value="Glu-&gt;Thr (E)">Glu-&gt;Thr (E)</option>
        <option value="Glu-&gt;Trp (E)">Glu-&gt;Trp (E)</option>
        <option value="Glu-&gt;Tyr (E)">Glu-&gt;Tyr (E)</option>
        <option value="Glu-&gt;Val (E)">Glu-&gt;Val (E)</option>
        <option value="Glu-&gt;Xle (E)">Glu-&gt;Xle (E)</option>
        <option value="Glu-&gt;pyro-Glu (N-term E)">Glu-&gt;pyro-Glu (N-term E)</option>
        <option value="GluGlu (E)">GluGlu (E)</option>
        <option value="GluGluGlu (E)">GluGluGlu (E)</option>
        <option value="GluGluGluGlu (E)">GluGluGluGlu (E)</option>
        <option value="Gluconoylation (K)">Gluconoylation (K)</option>
        <option value="Gluconoylation (N-term)">Gluconoylation (N-term)</option>
        <option value="Glucosylgalactosyl (K)">Glucosylgalactosyl (K)</option>
        <option value="Glucuronyl (S)">Glucuronyl (S)</option>
        <option value="Glutathione (C)">Glutathione (C)</option>
        <option value="Gly (K)">Gly (K)</option>
        <option value="Gly (S)">Gly (S)</option>
        <option value="Gly (T)">Gly (T)</option>
        <option value="Gly-&gt;Ala (G)">Gly-&gt;Ala (G)</option>
        <option value="Gly-&gt;Arg (G)">Gly-&gt;Arg (G)</option>
        <option value="Gly-&gt;Asn (G)">Gly-&gt;Asn (G)</option>
        <option value="Gly-&gt;Asp (G)">Gly-&gt;Asp (G)</option>
        <option value="Gly-&gt;Cys (G)">Gly-&gt;Cys (G)</option>
        <option value="Gly-&gt;Gln (G)">Gly-&gt;Gln (G)</option>
        <option value="Gly-&gt;Glu (G)">Gly-&gt;Glu (G)</option>
        <option value="Gly-&gt;His (G)">Gly-&gt;His (G)</option>
        <option value="Gly-&gt;Lys (G)">Gly-&gt;Lys (G)</option>
        <option value="Gly-&gt;Met (G)">Gly-&gt;Met (G)</option>
        <option value="Gly-&gt;Phe (G)">Gly-&gt;Phe (G)</option>
        <option value="Gly-&gt;Pro (G)">Gly-&gt;Pro (G)</option>
        <option value="Gly-&gt;Ser (G)">Gly-&gt;Ser (G)</option>
        <option value="Gly-&gt;Thr (G)">Gly-&gt;Thr (G)</option>
        <option value="Gly-&gt;Trp (G)">Gly-&gt;Trp (G)</option>
        <option value="Gly-&gt;Tyr (G)">Gly-&gt;Tyr (G)</option>
        <option value="Gly-&gt;Val (G)">Gly-&gt;Val (G)</option>
        <option value="Gly-&gt;Xle (G)">Gly-&gt;Xle (G)</option>
        <option value="Gly-loss+Amide (C-term G)">Gly-loss+Amide (C-term G)</option>
        <option value="Glycerophospho (S)">Glycerophospho (S)</option>
        <option value="GlycerylPE (E)">GlycerylPE (E)</option>
        <option value="Glycosyl (P)">Glycosyl (P)</option>
        <option value="Guanidinyl (K)">Guanidinyl (K)</option>
        <option value="Guanidinyl (N-term)">Guanidinyl (N-term)</option>
        <option value="HCysThiolactone (K)">HCysThiolactone (K)</option>
        <option value="HCysteinyl (C)">HCysteinyl (C)</option>
        <option value="HMVK (C)">HMVK (C)</option>
        <option value="HN2_mustard (C)">HN2_mustard (C)</option>
        <option value="HN2_mustard (H)">HN2_mustard (H)</option>
        <option value="HN2_mustard (K)">HN2_mustard (K)</option>
        <option value="HN3_mustard (C)">HN3_mustard (C)</option>
        <option value="HN3_mustard (H)">HN3_mustard (H)</option>
        <option value="HN3_mustard (K)">HN3_mustard (K)</option>
        <option value="HNE (A)">HNE (A)</option>
        <option value="HNE (C)">HNE (C)</option>
        <option value="HNE (H)">HNE (H)</option>
        <option value="HNE (K)">HNE (K)</option>
        <option value="HNE (L)">HNE (L)</option>
        <option value="HNE+Delta:H(2) (C)">HNE+Delta:H(2) (C)</option>
        <option value="HNE+Delta:H(2) (H)">HNE+Delta:H(2) (H)</option>
        <option value="HNE+Delta:H(2) (K)">HNE+Delta:H(2) (K)</option>
        <option value="HNE-BAHAH (C)">HNE-BAHAH (C)</option>
        <option value="HNE-BAHAH (H)">HNE-BAHAH (H)</option>
        <option value="HNE-BAHAH (K)">HNE-BAHAH (K)</option>
        <option value="HNE-Delta:H(2)O (C)">HNE-Delta:H(2)O (C)</option>
        <option value="HNE-Delta:H(2)O (H)">HNE-Delta:H(2)O (H)</option>
        <option value="HNE-Delta:H(2)O (K)">HNE-Delta:H(2)O (K)</option>
        <option value="HPG (R)">HPG (R)</option>
        <option value="Heme (C)">Heme (C)</option>
        <option value="Heme (H)">Heme (H)</option>
        <option value="Hep (K)">Hep (K)</option>
        <option value="Hep (N)">Hep (N)</option>
        <option value="Hep (Q)">Hep (Q)</option>
        <option value="Hep (R)">Hep (R)</option>
        <option value="Hep (S)">Hep (S)</option>
        <option value="Hep (T)">Hep (T)</option>
        <option value="Hex (C)">Hex (C)</option>
        <option value="Hex (K)">Hex (K)</option>
        <option value="Hex (N)">Hex (N)</option>
        <option value="Hex (N-term)">Hex (N-term)</option>
        <option value="Hex (R)">Hex (R)</option>
        <option value="Hex (S)">Hex (S)</option>
        <option value="Hex (T)">Hex (T)</option>
        <option value="Hex (W)">Hex (W)</option>
        <option value="Hex (Y)">Hex (Y)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (N)">Hex(1)HexNAc(1)NeuAc(1) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (S)">Hex(1)HexNAc(1)NeuAc(1) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(1) (T)">Hex(1)HexNAc(1)NeuAc(1) (T)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (N)">Hex(1)HexNAc(1)NeuAc(2) (N)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (S)">Hex(1)HexNAc(1)NeuAc(2) (S)</option>
        <option value="Hex(1)HexNAc(1)NeuAc(2) (T)">Hex(1)HexNAc(1)NeuAc(2) (T)</option>
        <option value="Hex(1)HexNAc(1)dHex(1) (N)">Hex(1)HexNAc(1)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2) (N)">Hex(1)HexNAc(2) (N)</option>
        <option value="Hex(1)HexNAc(2)Pent(1) (N)">Hex(1)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1) (N)">Hex(1)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(1)Pent(1) (N)">Hex(1)HexNAc(2)dHex(1)Pent(1) (N)</option>
        <option value="Hex(1)HexNAc(2)dHex(2) (N)">Hex(1)HexNAc(2)dHex(2) (N)</option>
        <option value="Hex(2) (K)">Hex(2) (K)</option>
        <option value="Hex(2) (R)">Hex(2) (R)</option>
        <option value="Hex(2)HexNAc(2) (N)">Hex(2)HexNAc(2) (N)</option>
        <option value="Hex(2)HexNAc(2)Pent(1) (N)">Hex(2)HexNAc(2)Pent(1) (N)</option>
        <option value="Hex(2)HexNAc(2)dHex(1) (N)">Hex(2)HexNAc(2)dHex(1) (N)</option>
        <option value="Hex(3) (N)">Hex(3) (N)</option>
        <option value="Hex(3)HexNAc(1)Pent(1) (N)">Hex(3)HexNAc(1)Pent(1) (N)</option>
        <option value="Hex(3)HexNAc(2) (N)">Hex(3)HexNAc(2) (N)</option>
        <option value="Hex(3)HexNAc(2)P(1) (N)">Hex(3)HexNAc(2)P(1) (N)</option>
        <option value="Hex(3)HexNAc(4) (N)">Hex(3)HexNAc(4) (N)</option>
        <option value="Hex(4)HexNAc(4) (N)">Hex(4)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(2) (N)">Hex(5)HexNAc(2) (N)</option>
        <option value="Hex(5)HexNAc(4) (N)">Hex(5)HexNAc(4) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(1) (N)">Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="Hex(5)HexNAc(4)NeuAc(2) (N)">Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="Hex1HexNAc1 (N)">Hex1HexNAc1 (N)</option>
        <option value="Hex1HexNAc1 (S)">Hex1HexNAc1 (S)</option>
        <option value="Hex1HexNAc1 (T)">Hex1HexNAc1 (T)</option>
        <option value="HexN (K)">HexN (K)</option>
        <option value="HexN (N)">HexN (N)</option>
        <option value="HexN (T)">HexN (T)</option>
        <option value="HexN (W)">HexN (W)</option>
        <option value="HexNAc (N)">HexNAc (N)</option>
        <option value="HexNAc (S)">HexNAc (S)</option>
        <option value="HexNAc (T)">HexNAc (T)</option>
        <option value="HexNAc(1)dHex(1) (N)">HexNAc(1)dHex(1) (N)</option>
        <option value="HexNAc(1)dHex(2) (N)">HexNAc(1)dHex(2) (N)</option>
        <option value="HexNAc(2) (N)">HexNAc(2) (N)</option>
        <option value="HexNAc(2)dHex(1) (N)">HexNAc(2)dHex(1) (N)</option>
        <option value="HexNAc(2)dHex(2) (N)">HexNAc(2)dHex(2) (N)</option>
        <option value="His-&gt;Ala (H)">His-&gt;Ala (H)</option>
        <option value="His-&gt;Arg (H)">His-&gt;Arg (H)</option>
        <option value="His-&gt;Asn (H)">His-&gt;Asn (H)</option>
        <option value="His-&gt;Asp (H)">His-&gt;Asp (H)</option>
        <option value="His-&gt;Cys (H)">His-&gt;Cys (H)</option>
        <option value="His-&gt;Gln (H)">His-&gt;Gln (H)</option>
        <option value="His-&gt;Glu (H)">His-&gt;Glu (H)</option>
        <option value="His-&gt;Gly (H)">His-&gt;Gly (H)</option>
        <option value="His-&gt;Lys (H)">His-&gt;Lys (H)</option>
        <option value="His-&gt;Met (H)">His-&gt;Met (H)</option>
        <option value="His-&gt;Phe (H)">His-&gt;Phe (H)</option>
        <option value="His-&gt;Pro (H)">His-&gt;Pro (H)</option>
        <option value="His-&gt;Ser (H)">His-&gt;Ser (H)</option>
        <option value="His-&gt;Thr (H)">His-&gt;Thr (H)</option>
        <option value="His-&gt;Trp (H)">His-&gt;Trp (H)</option>
        <option value="His-&gt;Tyr (H)">His-&gt;Tyr (H)</option>
        <option value="His-&gt;Val (H)">His-&gt;Val (H)</option>
        <option value="His-&gt;Xle (H)">His-&gt;Xle (H)</option>
        <option value="Homocysteic_acid (M)">Homocysteic_acid (M)</option>
        <option value="Hydroxamic_acid (D)">Hydroxamic_acid (D)</option>
        <option value="Hydroxamic_acid (E)">Hydroxamic_acid (E)</option>
        <option value="Hydroxycinnamyl (C)">Hydroxycinnamyl (C)</option>
        <option value="Hydroxyfarnesyl (C)">Hydroxyfarnesyl (C)</option>
        <option value="Hydroxyheme (E)">Hydroxyheme (E)</option>
        <option value="Hydroxymethyl (N)">Hydroxymethyl (N)</option>
        <option value="HydroxymethylOP (K)">HydroxymethylOP (K)</option>
        <option value="Hydroxytrimethyl (K)">Hydroxytrimethyl (K)</option>
        <option value="Hypusine (K)">Hypusine (K)</option>
        <option value="IBTP (C)">IBTP (C)</option>
        <option value="ICAT-C (C)">ICAT-C (C)</option>
        <option value="ICAT-C:13C(9) (C)">ICAT-C:13C(9) (C)</option>
        <option value="ICAT-D (C)">ICAT-D (C)</option>
        <option value="ICAT-D:2H(8) (C)">ICAT-D:2H(8) (C)</option>
        <option value="ICAT-G (C)">ICAT-G (C)</option>
        <option value="ICAT-G:2H(8) (C)">ICAT-G:2H(8) (C)</option>
        <option value="ICAT-H (C)">ICAT-H (C)</option>
        <option value="ICAT-H:13C(6) (C)">ICAT-H:13C(6) (C)</option>
        <option value="ICDID (C)">ICDID (C)</option>
        <option value="ICDID:2H(6) (C)">ICDID:2H(6) (C)</option>
        <option value="ICPL (K)">ICPL (K)</option>
        <option value="ICPL (N-term)">ICPL (N-term)</option>
        <option value="ICPL:13C(6) (K)">ICPL:13C(6) (K)</option>
        <option value="ICPL:13C(6) (N-term)">ICPL:13C(6) (N-term)</option>
        <option value="ICPL:13C(6)2H(4) (K)">ICPL:13C(6)2H(4) (K)</option>
        <option value="ICPL:13C(6)2H(4) (N-term)">ICPL:13C(6)2H(4) (N-term)</option>
        <option value="ICPL:2H(4) (K)">ICPL:2H(4) (K)</option>
        <option value="ICPL:2H(4) (N-term)">ICPL:2H(4) (N-term)</option>
        <option value="IDEnT (C)">IDEnT (C)</option>
        <option value="IED-Biotin (C)">IED-Biotin (C)</option>
        <option value="IGBP (C)">IGBP (C)</option>
        <option value="IGBP:13C(2) (C)">IGBP:13C(2) (C)</option>
        <option value="IMEHex(2)NeuAc(1) (K)">IMEHex(2)NeuAc(1) (K)</option>
        <option value="IMID (K)">IMID (K)</option>
        <option value="IMID:2H(4) (K)">IMID:2H(4) (K)</option>
        <option value="ISD_z+2_ion (N-term)">ISD_z+2_ion (N-term)</option>
        <option value="Iminobiotin (K)">Iminobiotin (K)</option>
        <option value="Iminobiotin (N-term)">Iminobiotin (N-term)</option>
        <option value="Iodo (H)">Iodo (H)</option>
        <option value="Iodo (Y)">Iodo (Y)</option>
        <option value="IodoU-AMP (F)">IodoU-AMP (F)</option>
        <option value="IodoU-AMP (W)">IodoU-AMP (W)</option>
        <option value="IodoU-AMP (Y)">IodoU-AMP (Y)</option>
        <option value="Iodoacetanilide (C)">Iodoacetanilide (C)</option>
        <option value="Iodoacetanilide (K)">Iodoacetanilide (K)</option>
        <option value="Iodoacetanilide (N-term)">Iodoacetanilide (N-term)</option>
        <option value="Iodoacetanilide:13C(6) (C)">Iodoacetanilide:13C(6) (C)</option>
        <option value="Iodoacetanilide:13C(6) (K)">Iodoacetanilide:13C(6) (K)</option>
        <option value="Iodoacetanilide:13C(6) (N-term)">Iodoacetanilide:13C(6) (N-term)</option>
        <option value="Isopropylphospho (S)">Isopropylphospho (S)</option>
        <option value="Isopropylphospho (T)">Isopropylphospho (T)</option>
        <option value="Isopropylphospho (Y)">Isopropylphospho (Y)</option>
        <option value="LG-Hlactam-K (K)">LG-Hlactam-K (K)</option>
        <option value="LG-Hlactam-R (R)">LG-Hlactam-R (R)</option>
        <option value="LG-anhydrolactam (K)">LG-anhydrolactam (K)</option>
        <option value="LG-anhydrolactam (N-term)">LG-anhydrolactam (N-term)</option>
        <option value="LG-anhyropyrrole (K)">LG-anhyropyrrole (K)</option>
        <option value="LG-anhyropyrrole (N-term)">LG-anhyropyrrole (N-term)</option>
        <option value="LG-lactam-K (K)">LG-lactam-K (K)</option>
        <option value="LG-lactam-R (R)">LG-lactam-R (R)</option>
        <option value="LG-pyrrole (K)">LG-pyrrole (K)</option>
        <option value="LG-pyrrole (N-term)">LG-pyrrole (N-term)</option>
        <option value="LRGG (K)">LRGG (K)</option>
        <option value="Label:13C(1)2H(3) (M)">Label:13C(1)2H(3) (M)</option>
        <option value="Label:13C(1)2H(3)+Oxidation (M)">Label:13C(1)2H(3)+Oxidation (M)</option>
        <option value="Label:13C(3) (A)">Label:13C(3) (A)</option>
        <option value="Label:13C(3)15N(1) (A)">Label:13C(3)15N(1) (A)</option>
        <option value="Label:13C(4) (M)">Label:13C(4) (M)</option>
        <option value="Label:13C(4)+Oxidation (M)">Label:13C(4)+Oxidation (M)</option>
        <option value="Label:13C(4)15N(1) (D)">Label:13C(4)15N(1) (D)</option>
        <option value="Label:13C(4)15N(2)+GG (K)">Label:13C(4)15N(2)+GG (K)</option>
        <option value="Label:13C(5) (P)">Label:13C(5) (P)</option>
        <option value="Label:13C(5)15N(1) (E)">Label:13C(5)15N(1) (E)</option>
        <option value="Label:13C(5)15N(1) (M)">Label:13C(5)15N(1) (M)</option>
        <option value="Label:13C(5)15N(1) (P)">Label:13C(5)15N(1) (P)</option>
        <option value="Label:13C(5)15N(1) (V)">Label:13C(5)15N(1) (V)</option>
        <option value="Label:13C(6) (I)">Label:13C(6) (I)</option>
        <option value="Label:13C(6) (K)">Label:13C(6) (K)</option>
        <option value="Label:13C(6) (L)">Label:13C(6) (L)</option>
        <option value="Label:13C(6) (R)">Label:13C(6) (R)</option>
        <option value="Label:13C(6)+Acetyl (K)">Label:13C(6)+Acetyl (K)</option>
        <option value="Label:13C(6)+Dimethyl (K)">Label:13C(6)+Dimethyl (K)</option>
        <option value="Label:13C(6)+GG (K)">Label:13C(6)+GG (K)</option>
        <option value="Label:13C(6)15N(1) (I)">Label:13C(6)15N(1) (I)</option>
        <option value="Label:13C(6)15N(1) (L)">Label:13C(6)15N(1) (L)</option>
        <option value="Label:13C(6)15N(2) (K)">Label:13C(6)15N(2) (K)</option>
        <option value="Label:13C(6)15N(2)+Acetyl (K)">Label:13C(6)15N(2)+Acetyl (K)</option>
        <option value="Label:13C(6)15N(2)+Dimethyl (K)">Label:13C(6)15N(2)+Dimethyl (K)</option>
        <option value="Label:13C(6)15N(2)+GG (K)">Label:13C(6)15N(2)+GG (K)</option>
        <option value="Label:13C(6)15N(4) (R)">Label:13C(6)15N(4) (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl (R)">Label:13C(6)15N(4)+Dimethyl (R)</option>
        <option value="Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)">Label:13C(6)15N(4)+Dimethyl:2H(6)13C(2) (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl (R)">Label:13C(6)15N(4)+Methyl (R)</option>
        <option value="Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)">Label:13C(6)15N(4)+Methyl:2H(3)13C(1) (R)</option>
        <option value="Label:13C(8)15N(2) (R)">Label:13C(8)15N(2) (R)</option>
        <option value="Label:13C(9) (F)">Label:13C(9) (F)</option>
        <option value="Label:13C(9) (Y)">Label:13C(9) (Y)</option>
        <option value="Label:13C(9)+Phospho (Y)">Label:13C(9)+Phospho (Y)</option>
        <option value="Label:13C(9)15N(1) (F)">Label:13C(9)15N(1) (F)</option>
        <option value="Label:15N(1) (A)">Label:15N(1) (A)</option>
        <option value="Label:15N(1) (C)">Label:15N(1) (C)</option>
        <option value="Label:15N(1) (D)">Label:15N(1) (D)</option>
        <option value="Label:15N(1) (E)">Label:15N(1) (E)</option>
        <option value="Label:15N(1) (F)">Label:15N(1) (F)</option>
        <option value="Label:15N(1) (G)">Label:15N(1) (G)</option>
        <option value="Label:15N(1) (I)">Label:15N(1) (I)</option>
        <option value="Label:15N(1) (L)">Label:15N(1) (L)</option>
        <option value="Label:15N(1) (M)">Label:15N(1) (M)</option>
        <option value="Label:15N(1) (P)">Label:15N(1) (P)</option>
        <option value="Label:15N(1) (S)">Label:15N(1) (S)</option>
        <option value="Label:15N(1) (T)">Label:15N(1) (T)</option>
        <option value="Label:15N(1) (V)">Label:15N(1) (V)</option>
        <option value="Label:15N(1) (Y)">Label:15N(1) (Y)</option>
        <option value="Label:15N(2) (K)">Label:15N(2) (K)</option>
        <option value="Label:15N(2) (N)">Label:15N(2) (N)</option>
        <option value="Label:15N(2) (Q)">Label:15N(2) (Q)</option>
        <option value="Label:15N(2) (W)">Label:15N(2) (W)</option>
        <option value="Label:15N(2)2H(9) (K)">Label:15N(2)2H(9) (K)</option>
        <option value="Label:15N(3) (H)">Label:15N(3) (H)</option>
        <option value="Label:15N(4) (R)">Label:15N(4) (R)</option>
        <option value="Label:18O(1) (C-term)">Label:18O(1) (C-term)</option>
        <option value="Label:18O(1) (S)">Label:18O(1) (S)</option>
        <option value="Label:18O(1) (T)">Label:18O(1) (T)</option>
        <option value="Label:18O(1) (Y)">Label:18O(1) (Y)</option>
        <option value="Label:18O(2) (C-term)">Label:18O(2) (C-term)</option>
        <option value="Label:2H(10) (L)">Label:2H(10) (L)</option>
        <option value="Label:2H(3) (L)">Label:2H(3) (L)</option>
        <option value="Label:2H(3) (M)">Label:2H(3) (M)</option>
        <option value="Label:2H(3)+Oxidation (M)">Label:2H(3)+Oxidation (M)</option>
        <option value="Label:2H(4) (F)">Label:2H(4) (F)</option>
        <option value="Label:2H(4) (K)">Label:2H(4) (K)</option>
        <option value="Label:2H(4) (Y)">Label:2H(4) (Y)</option>
        <option value="Label:2H(4)+Acetyl (K)">Label:2H(4)+Acetyl (K)</option>
        <option value="Label:2H(4)+GG (K)">Label:2H(4)+GG (K)</option>
        <option value="Label:2H(4)13C(1) (R)">Label:2H(4)13C(1) (R)</option>
        <option value="Label:2H(6)15N(1) (P)">Label:2H(6)15N(1) (P)</option>
        <option value="Label:2H(7)15N(4) (R)">Label:2H(7)15N(4) (R)</option>
        <option value="Label:2H(9)13C(6)15N(2) (K)">Label:2H(9)13C(6)15N(2) (K)</option>
        <option value="Leu-&gt;MetOx (L)">Leu-&gt;MetOx (L)</option>
        <option value="Lipoyl (K)">Lipoyl (K)</option>
        <option value="Lys (N-term)">Lys (N-term)</option>
        <option value="Lys-&gt;Ala (K)">Lys-&gt;Ala (K)</option>
        <option value="Lys-&gt;Allysine (K)">Lys-&gt;Allysine (K)</option>
        <option value="Lys-&gt;AminoadipicAcid (K)">Lys-&gt;AminoadipicAcid (K)</option>
        <option value="Lys-&gt;Arg (K)">Lys-&gt;Arg (K)</option>
        <option value="Lys-&gt;Asn (K)">Lys-&gt;Asn (K)</option>
        <option value="Lys-&gt;Asp (K)">Lys-&gt;Asp (K)</option>
        <option value="Lys-&gt;CamCys (K)">Lys-&gt;CamCys (K)</option>
        <option value="Lys-&gt;Cys (K)">Lys-&gt;Cys (K)</option>
        <option value="Lys-&gt;Gln (K)">Lys-&gt;Gln (K)</option>
        <option value="Lys-&gt;Glu (K)">Lys-&gt;Glu (K)</option>
        <option value="Lys-&gt;Gly (K)">Lys-&gt;Gly (K)</option>
        <option value="Lys-&gt;His (K)">Lys-&gt;His (K)</option>
        <option value="Lys-&gt;Met (K)">Lys-&gt;Met (K)</option>
        <option value="Lys-&gt;MetOx (K)">Lys-&gt;MetOx (K)</option>
        <option value="Lys-&gt;Phe (K)">Lys-&gt;Phe (K)</option>
        <option value="Lys-&gt;Pro (K)">Lys-&gt;Pro (K)</option>
        <option value="Lys-&gt;Ser (K)">Lys-&gt;Ser (K)</option>
        <option value="Lys-&gt;Thr (K)">Lys-&gt;Thr (K)</option>
        <option value="Lys-&gt;Trp (K)">Lys-&gt;Trp (K)</option>
        <option value="Lys-&gt;Tyr (K)">Lys-&gt;Tyr (K)</option>
        <option value="Lys-&gt;Val (K)">Lys-&gt;Val (K)</option>
        <option value="Lys-&gt;Xle (K)">Lys-&gt;Xle (K)</option>
        <option value="Lysbiotinhydrazide (K)">Lysbiotinhydrazide (K)</option>
        <option value="MDCC (C)">MDCC (C)</option>
        <option value="MG-H1 (R)">MG-H1 (R)</option>
        <option value="MM-diphenylpentanone (C)">MM-diphenylpentanone (C)</option>
        <option value="MTSL (C)">MTSL (C)</option>
        <option value="Maleimide-PEO2-Biotin (C)">Maleimide-PEO2-Biotin (C)</option>
        <option value="Malonyl (C)">Malonyl (C)</option>
        <option value="Malonyl (S)">Malonyl (S)</option>
        <option value="Menadione (C)">Menadione (C)</option>
        <option value="Menadione (K)">Menadione (K)</option>
        <option value="Menadione-HQ (C)">Menadione-HQ (C)</option>
        <option value="Menadione-HQ (K)">Menadione-HQ (K)</option>
        <option value="MercaptoEthanol (S)">MercaptoEthanol (S)</option>
        <option value="MercaptoEthanol (T)">MercaptoEthanol (T)</option>
        <option value="Met-&gt;Aha (M)">Met-&gt;Aha (M)</option>
        <option value="Met-&gt;Ala (M)">Met-&gt;Ala (M)</option>
        <option value="Met-&gt;Arg (M)">Met-&gt;Arg (M)</option>
        <option value="Met-&gt;Asn (M)">Met-&gt;Asn (M)</option>
        <option value="Met-&gt;Asp (M)">Met-&gt;Asp (M)</option>
        <option value="Met-&gt;Cys (M)">Met-&gt;Cys (M)</option>
        <option value="Met-&gt;Gln (M)">Met-&gt;Gln (M)</option>
        <option value="Met-&gt;Glu (M)">Met-&gt;Glu (M)</option>
        <option value="Met-&gt;Gly (M)">Met-&gt;Gly (M)</option>
        <option value="Met-&gt;His (M)">Met-&gt;His (M)</option>
        <option value="Met-&gt;Hpg (M)">Met-&gt;Hpg (M)</option>
        <option value="Met-&gt;Hse (C-term M)">Met-&gt;Hse (C-term M)</option>
        <option value="Met-&gt;Hsl (C-term M)">Met-&gt;Hsl (C-term M)</option>
        <option value="Met-&gt;Lys (M)">Met-&gt;Lys (M)</option>
        <option value="Met-&gt;Phe (M)">Met-&gt;Phe (M)</option>
        <option value="Met-&gt;Pro (M)">Met-&gt;Pro (M)</option>
        <option value="Met-&gt;Ser (M)">Met-&gt;Ser (M)</option>
        <option value="Met-&gt;Thr (M)">Met-&gt;Thr (M)</option>
        <option value="Met-&gt;Trp (M)">Met-&gt;Trp (M)</option>
        <option value="Met-&gt;Tyr (M)">Met-&gt;Tyr (M)</option>
        <option value="Met-&gt;Val (M)">Met-&gt;Val (M)</option>
        <option value="Met-&gt;Xle (M)">Met-&gt;Xle (M)</option>
        <option value="Methyl (C)">Methyl (C)</option>
        <option value="Methyl (C-term)">Methyl (C-term)</option>
        <option value="Methyl (D)">Methyl (D)</option>
        <option value="Methyl (E)">Methyl (E)</option>
        <option value="Methyl (H)">Methyl (H)</option>
        <option value="Methyl (I)">Methyl (I)</option>
        <option value="Methyl (K)">Methyl (K)</option>
        <option value="Methyl (L)">Methyl (L)</option>
        <option value="Methyl (N)">Methyl (N)</option>
        <option value="Methyl (N-term)">Methyl (N-term)</option>
        <option value="Methyl (Q)">Methyl (Q)</option>
        <option value="Methyl (R)">Methyl (R)</option>
        <option value="Methyl (S)">Methyl (S)</option>
        <option value="Methyl (T)">Methyl (T)</option>
        <option value="Methyl+Acetyl:2H(3) (K)">Methyl+Acetyl:2H(3) (K)</option>
        <option value="Methyl+Deamidated (N)">Methyl+Deamidated (N)</option>
        <option value="Methyl+Deamidated (Q)">Methyl+Deamidated (Q)</option>
        <option value="Methyl-PEO12-Maleimide (C)">Methyl-PEO12-Maleimide (C)</option>
        <option value="Methyl:2H(2) (K)">Methyl:2H(2) (K)</option>
        <option value="Methyl:2H(3) (C-term)">Methyl:2H(3) (C-term)</option>
        <option value="Methyl:2H(3) (D)">Methyl:2H(3) (D)</option>
        <option value="Methyl:2H(3) (E)">Methyl:2H(3) (E)</option>
        <option value="Methyl:2H(3) (K)">Methyl:2H(3) (K)</option>
        <option value="Methyl:2H(3) (R)">Methyl:2H(3) (R)</option>
        <option value="Methyl:2H(3)+Acetyl:2H(3) (K)">Methyl:2H(3)+Acetyl:2H(3) (K)</option>
        <option value="Methyl:2H(3)13C(1) (K)">Methyl:2H(3)13C(1) (K)</option>
        <option value="Methyl:2H(3)13C(1) (R)">Methyl:2H(3)13C(1) (R)</option>
        <option value="Methylamine (S)">Methylamine (S)</option>
        <option value="Methylamine (T)">Methylamine (T)</option>
        <option value="Methylmalonylation (S)">Methylmalonylation (S)</option>
        <option value="Methylphosphonate (S)">Methylphosphonate (S)</option>
        <option value="Methylphosphonate (T)">Methylphosphonate (T)</option>
        <option value="Methylphosphonate (Y)">Methylphosphonate (Y)</option>
        <option value="Methylpyrroline (K)">Methylpyrroline (K)</option>
        <option value="Methylthio (C)">Methylthio (C)</option>
        <option value="Methylthio (D)">Methylthio (D)</option>
        <option value="Methylthio (K)">Methylthio (K)</option>
        <option value="Methylthio (N)">Methylthio (N)</option>
        <option value="Methylthio (N-term)">Methylthio (N-term)</option>
        <option value="Molybdopterin (C)">Molybdopterin (C)</option>
        <option value="MolybdopterinGD (C)">MolybdopterinGD (C)</option>
        <option value="MolybdopterinGD (D)">MolybdopterinGD (D)</option>
        <option value="MolybdopterinGD+Delta:S(-1)Se(1) (C)">MolybdopterinGD+Delta:S(-1)Se(1) (C)</option>
        <option value="MurNAc (A)">MurNAc (A)</option>
        <option value="Myristoyl (C)">Myristoyl (C)</option>
        <option value="Myristoyl (K)">Myristoyl (K)</option>
        <option value="Myristoyl (N-term G)">Myristoyl (N-term G)</option>
        <option value="N-dimethylphosphate (S)">N-dimethylphosphate (S)</option>
        <option value="NA-LNO2 (C)">NA-LNO2 (C)</option>
        <option value="NA-LNO2 (H)">NA-LNO2 (H)</option>
        <option value="NA-OA-NO2 (C)">NA-OA-NO2 (C)</option>
        <option value="NA-OA-NO2 (H)">NA-OA-NO2 (H)</option>
        <option value="NBS (W)">NBS (W)</option>
        <option value="NBS:13C(6) (W)">NBS:13C(6) (W)</option>
        <option value="NDA (K)">NDA (K)</option>
        <option value="NDA (N-term)">NDA (N-term)</option>
        <option value="NEIAA (C)">NEIAA (C)</option>
        <option value="NEIAA (Y)">NEIAA (Y)</option>
        <option value="NEIAA:2H(5) (C)">NEIAA:2H(5) (C)</option>
        <option value="NEIAA:2H(5) (Y)">NEIAA:2H(5) (Y)</option>
        <option value="NEM:2H(5) (C)">NEM:2H(5) (C)</option>
        <option value="NEM:2H(5)+H2O (C)">NEM:2H(5)+H2O (C)</option>
        <option value="NEMsulfur (C)">NEMsulfur (C)</option>
        <option value="NEMsulfurWater (C)">NEMsulfurWater (C)</option>
        <option value="NHS-LC-Biotin (K)">NHS-LC-Biotin (K)</option>
        <option value="NHS-LC-Biotin (N-term)">NHS-LC-Biotin (N-term)</option>
        <option value="NHS-fluorescein (K)">NHS-fluorescein (K)</option>
        <option value="NIC (K)">NIC (K)</option>
        <option value="NIC (N-term)">NIC (N-term)</option>
        <option value="NIPCAM (C)">NIPCAM (C)</option>
        <option value="NO_SMX_SEMD (C)">NO_SMX_SEMD (C)</option>
        <option value="NO_SMX_SIMD (C)">NO_SMX_SIMD (C)</option>
        <option value="NO_SMX_SMCT (C)">NO_SMX_SMCT (C)</option>
        <option value="Nethylmaleimide (C)">Nethylmaleimide (C)</option>
        <option value="Nethylmaleimide+water (C)">Nethylmaleimide+water (C)</option>
        <option value="Nethylmaleimide+water (K)">Nethylmaleimide+water (K)</option>
        <option value="NeuAc (N)">NeuAc (N)</option>
        <option value="NeuAc (S)">NeuAc (S)</option>
        <option value="NeuAc (T)">NeuAc (T)</option>
        <option value="NeuGc (N)">NeuGc (N)</option>
        <option value="NeuGc (S)">NeuGc (S)</option>
        <option value="NeuGc (T)">NeuGc (T)</option>
        <option value="Nitro (W)">Nitro (W)</option>
        <option value="Nitro (Y)">Nitro (Y)</option>
        <option value="Nitrosyl (C)">Nitrosyl (C)</option>
        <option value="Nmethylmaleimide (C)">Nmethylmaleimide (C)</option>
        <option value="Nmethylmaleimide (K)">Nmethylmaleimide (K)</option>
        <option value="Nmethylmaleimide+water (C)">Nmethylmaleimide+water (C)</option>
        <option value="O-Dimethylphosphate (S)">O-Dimethylphosphate (S)</option>
        <option value="O-Dimethylphosphate (T)">O-Dimethylphosphate (T)</option>
        <option value="O-Dimethylphosphate (Y)">O-Dimethylphosphate (Y)</option>
        <option value="O-Et-N-diMePhospho (S)">O-Et-N-diMePhospho (S)</option>
        <option value="O-Isopropylmethylphosphonate (S)">O-Isopropylmethylphosphonate (S)</option>
        <option value="O-Isopropylmethylphosphonate (T)">O-Isopropylmethylphosphonate (T)</option>
        <option value="O-Isopropylmethylphosphonate (Y)">O-Isopropylmethylphosphonate (Y)</option>
        <option value="O-Methylphosphate (S)">O-Methylphosphate (S)</option>
        <option value="O-Methylphosphate (T)">O-Methylphosphate (T)</option>
        <option value="O-Methylphosphate (Y)">O-Methylphosphate (Y)</option>
        <option value="O-pinacolylmethylphosphonate (H)">O-pinacolylmethylphosphonate (H)</option>
        <option value="O-pinacolylmethylphosphonate (K)">O-pinacolylmethylphosphonate (K)</option>
        <option value="O-pinacolylmethylphosphonate (S)">O-pinacolylmethylphosphonate (S)</option>
        <option value="O-pinacolylmethylphosphonate (T)">O-pinacolylmethylphosphonate (T)</option>
        <option value="O-pinacolylmethylphosphonate (Y)">O-pinacolylmethylphosphonate (Y)</option>
        <option value="Octanoyl (C)">Octanoyl (C)</option>
        <option value="Octanoyl (S)">Octanoyl (S)</option>
        <option value="Octanoyl (T)">Octanoyl (T)</option>
        <option value="OxArgBiotin (R)">OxArgBiotin (R)</option>
        <option value="OxArgBiotinRed (R)">OxArgBiotinRed (R)</option>
        <option value="OxLysBiotin (K)">OxLysBiotin (K)</option>
        <option value="OxLysBiotinRed (K)">OxLysBiotinRed (K)</option>
        <option value="OxProBiotin (P)">OxProBiotin (P)</option>
        <option value="OxProBiotinRed (P)">OxProBiotinRed (P)</option>
        <option value="Oxidation (C)">Oxidation (C)</option>
        <option value="Oxidation (C-term G)">Oxidation (C-term G)</option>
        <option value="Oxidation (D)">Oxidation (D)</option>
        <option value="Oxidation (F)">Oxidation (F)</option>
        <option value="Oxidation (H)">Oxidation (H)</option>
        <option value="Oxidation (K)">Oxidation (K)</option>
        <option value="Oxidation (M)">Oxidation (M)</option>
        <option value="Oxidation (N)">Oxidation (N)</option>
        <option value="Oxidation (P)">Oxidation (P)</option>
        <option value="Oxidation (R)">Oxidation (R)</option>
        <option value="Oxidation (W)">Oxidation (W)</option>
        <option value="Oxidation (Y)">Oxidation (Y)</option>
        <option value="Oxidation+NEM (C)">Oxidation+NEM (C)</option>
        <option value="PEITC (C)">PEITC (C)</option>
        <option value="PEITC (K)">PEITC (K)</option>
        <option value="PEITC (N-term)">PEITC (N-term)</option>
        <option value="PEO-Iodoacetyl-LC-Biotin (C)">PEO-Iodoacetyl-LC-Biotin (C)</option>
        <option value="PET (S)">PET (S)</option>
        <option value="PET (T)">PET (T)</option>
        <option value="PS_Hapten (C)">PS_Hapten (C)</option>
        <option value="PS_Hapten (H)">PS_Hapten (H)</option>
        <option value="PS_Hapten (K)">PS_Hapten (K)</option>
        <option value="Palmitoleyl (C)">Palmitoleyl (C)</option>
        <option value="Palmitoleyl (S)">Palmitoleyl (S)</option>
        <option value="Palmitoleyl (T)">Palmitoleyl (T)</option>
        <option value="Palmitoyl (C)">Palmitoyl (C)</option>
        <option value="Palmitoyl (K)">Palmitoyl (K)</option>
        <option value="Palmitoyl (S)">Palmitoyl (S)</option>
        <option value="Palmitoyl (T)">Palmitoyl (T)</option>
        <option value="Pentylamine (Q)">Pentylamine (Q)</option>
        <option value="Phe-&gt;Ala (F)">Phe-&gt;Ala (F)</option>
        <option value="Phe-&gt;Arg (F)">Phe-&gt;Arg (F)</option>
        <option value="Phe-&gt;Asn (F)">Phe-&gt;Asn (F)</option>
        <option value="Phe-&gt;Asp (F)">Phe-&gt;Asp (F)</option>
        <option value="Phe-&gt;CamCys (F)">Phe-&gt;CamCys (F)</option>
        <option value="Phe-&gt;Cys (F)">Phe-&gt;Cys (F)</option>
        <option value="Phe-&gt;Gln (F)">Phe-&gt;Gln (F)</option>
        <option value="Phe-&gt;Glu (F)">Phe-&gt;Glu (F)</option>
        <option value="Phe-&gt;Gly (F)">Phe-&gt;Gly (F)</option>
        <option value="Phe-&gt;His (F)">Phe-&gt;His (F)</option>
        <option value="Phe-&gt;Lys (F)">Phe-&gt;Lys (F)</option>
        <option value="Phe-&gt;Met (F)">Phe-&gt;Met (F)</option>
        <option value="Phe-&gt;Pro (F)">Phe-&gt;Pro (F)</option>
        <option value="Phe-&gt;Ser (F)">Phe-&gt;Ser (F)</option>
        <option value="Phe-&gt;Thr (F)">Phe-&gt;Thr (F)</option>
        <option value="Phe-&gt;Trp (F)">Phe-&gt;Trp (F)</option>
        <option value="Phe-&gt;Tyr (F)">Phe-&gt;Tyr (F)</option>
        <option value="Phe-&gt;Val (F)">Phe-&gt;Val (F)</option>
        <option value="Phe-&gt;Xle (F)">Phe-&gt;Xle (F)</option>
        <option value="Phenylisocyanate (N-term)">Phenylisocyanate (N-term)</option>
        <option value="Phenylisocyanate:2H(5) (N-term)">Phenylisocyanate:2H(5) (N-term)</option>
        <option value="Phospho (C)">Phospho (C)</option>
        <option value="Phospho (D)">Phospho (D)</option>
        <option value="Phospho (H)">Phospho (H)</option>
        <option value="Phospho (K)">Phospho (K)</option>
        <option value="Phospho (R)">Phospho (R)</option>
        <option value="Phospho (S)">Phospho (S)</option>
        <option value="Phospho (T)">Phospho (T)</option>
        <option value="Phospho (Y)">Phospho (Y)</option>
        <option value="PhosphoHex (S)">PhosphoHex (S)</option>
        <option value="PhosphoHexNAc (S)">PhosphoHexNAc (S)</option>
        <option value="PhosphoHexNAc (T)">PhosphoHexNAc (T)</option>
        <option value="PhosphoUridine (H)">PhosphoUridine (H)</option>
        <option value="PhosphoUridine (Y)">PhosphoUridine (Y)</option>
        <option value="Phosphoadenosine (H)">Phosphoadenosine (H)</option>
        <option value="Phosphoadenosine (K)">Phosphoadenosine (K)</option>
        <option value="Phosphoadenosine (T)">Phosphoadenosine (T)</option>
        <option value="Phosphoadenosine (Y)">Phosphoadenosine (Y)</option>
        <option value="Phosphogluconoylation (K)">Phosphogluconoylation (K)</option>
        <option value="Phosphogluconoylation (N-term)">Phosphogluconoylation (N-term)</option>
        <option value="Phosphoguanosine (H)">Phosphoguanosine (H)</option>
        <option value="Phosphoguanosine (K)">Phosphoguanosine (K)</option>
        <option value="Phosphopantetheine (S)">Phosphopantetheine (S)</option>
        <option value="Phosphopropargyl (S)">Phosphopropargyl (S)</option>
        <option value="Phosphopropargyl (T)">Phosphopropargyl (T)</option>
        <option value="Phosphopropargyl (Y)">Phosphopropargyl (Y)</option>
        <option value="PhosphoribosyldephosphoCoA (S)">PhosphoribosyldephosphoCoA (S)</option>
        <option value="Phycocyanobilin (C)">Phycocyanobilin (C)</option>
        <option value="Phycoerythrobilin (C)">Phycoerythrobilin (C)</option>
        <option value="Phytochromobilin (C)">Phytochromobilin (C)</option>
        <option value="Piperidine (K)">Piperidine (K)</option>
        <option value="Piperidine (N-term)">Piperidine (N-term)</option>
        <option value="Pro-&gt;Ala (P)">Pro-&gt;Ala (P)</option>
        <option value="Pro-&gt;Arg (P)">Pro-&gt;Arg (P)</option>
        <option value="Pro-&gt;Asn (P)">Pro-&gt;Asn (P)</option>
        <option value="Pro-&gt;Asp (P)">Pro-&gt;Asp (P)</option>
        <option value="Pro-&gt;Cys (P)">Pro-&gt;Cys (P)</option>
        <option value="Pro-&gt;Gln (P)">Pro-&gt;Gln (P)</option>
        <option value="Pro-&gt;Glu (P)">Pro-&gt;Glu (P)</option>
        <option value="Pro-&gt;Gly (P)">Pro-&gt;Gly (P)</option>
        <option value="Pro-&gt;His (P)">Pro-&gt;His (P)</option>
        <option value="Pro-&gt;Lys (P)">Pro-&gt;Lys (P)</option>
        <option value="Pro-&gt;Met (P)">Pro-&gt;Met (P)</option>
        <option value="Pro-&gt;Phe (P)">Pro-&gt;Phe (P)</option>
        <option value="Pro-&gt;Pyrrolidinone (P)">Pro-&gt;Pyrrolidinone (P)</option>
        <option value="Pro-&gt;Pyrrolidone (P)">Pro-&gt;Pyrrolidone (P)</option>
        <option value="Pro-&gt;Ser (P)">Pro-&gt;Ser (P)</option>
        <option value="Pro-&gt;Thr (P)">Pro-&gt;Thr (P)</option>
        <option value="Pro-&gt;Trp (P)">Pro-&gt;Trp (P)</option>
        <option value="Pro-&gt;Tyr (P)">Pro-&gt;Tyr (P)</option>
        <option value="Pro-&gt;Val (P)">Pro-&gt;Val (P)</option>
        <option value="Pro-&gt;Xle (P)">Pro-&gt;Xle (P)</option>
        <option value="Pro-&gt;pyro-Glu (P)">Pro-&gt;pyro-Glu (P)</option>
        <option value="Propargylamine (C-term)">Propargylamine (C-term)</option>
        <option value="Propargylamine (D)">Propargylamine (D)</option>
        <option value="Propargylamine (E)">Propargylamine (E)</option>
        <option value="Propionamide (C)">Propionamide (C)</option>
        <option value="Propionamide (K)">Propionamide (K)</option>
        <option value="Propionamide (N-term)">Propionamide (N-term)</option>
        <option value="Propionamide:2H(3) (C)">Propionamide:2H(3) (C)</option>
        <option value="Propionyl (K)">Propionyl (K)</option>
        <option value="Propionyl (N-term)">Propionyl (N-term)</option>
        <option value="Propionyl (S)">Propionyl (S)</option>
        <option value="Propionyl (T)">Propionyl (T)</option>
        <option value="Propionyl:13C(3) (K)">Propionyl:13C(3) (K)</option>
        <option value="Propionyl:13C(3) (N-term)">Propionyl:13C(3) (N-term)</option>
        <option value="Propiophenone (C)">Propiophenone (C)</option>
        <option value="Propiophenone (H)">Propiophenone (H)</option>
        <option value="Propiophenone (K)">Propiophenone (K)</option>
        <option value="Propiophenone (R)">Propiophenone (R)</option>
        <option value="Propiophenone (S)">Propiophenone (S)</option>
        <option value="Propiophenone (T)">Propiophenone (T)</option>
        <option value="Propiophenone (W)">Propiophenone (W)</option>
        <option value="Propyl (K)">Propyl (K)</option>
        <option value="Propyl (N-term)">Propyl (N-term)</option>
        <option value="Propyl:2H(6) (K)">Propyl:2H(6) (K)</option>
        <option value="Propyl:2H(6) (N-term)">Propyl:2H(6) (N-term)</option>
        <option value="PropylNAGthiazoline (C)">PropylNAGthiazoline (C)</option>
        <option value="Puromycin (C-term)">Puromycin (C-term)</option>
        <option value="PyMIC (N-term)">PyMIC (N-term)</option>
        <option value="PyridoxalPhosphate (K)">PyridoxalPhosphate (K)</option>
        <option value="PyridoxalPhosphateH2 (K)">PyridoxalPhosphateH2 (K)</option>
        <option value="Pyridylacetyl (K)">Pyridylacetyl (K)</option>
        <option value="Pyridylacetyl (N-term)">Pyridylacetyl (N-term)</option>
        <option value="Pyridylethyl (C)">Pyridylethyl (C)</option>
        <option value="Pyro-carbamidomethyl (N-term C)">Pyro-carbamidomethyl (N-term C)</option>
        <option value="PyruvicAcidIminyl (K)">PyruvicAcidIminyl (K)</option>
        <option value="QAT (C)">QAT (C)</option>
        <option value="QAT:2H(3) (C)">QAT:2H(3) (C)</option>
        <option value="QEQTGG (K)">QEQTGG (K)</option>
        <option value="QQQTGG (K)">QQQTGG (K)</option>
        <option value="QTGG (K)">QTGG (K)</option>
        <option value="Quinone (W)">Quinone (W)</option>
        <option value="Quinone (Y)">Quinone (Y)</option>
        <option value="RNPXlink1 (C)">RNPXlink1 (C)</option>
        <option value="RNPXlink2 (F)">RNPXlink2 (F)</option>
        <option value="RNPXlink2 (K)">RNPXlink2 (K)</option>
        <option value="RNPXlink2 (L)">RNPXlink2 (L)</option>
        <option value="RNPXlink3 (C)">RNPXlink3 (C)</option>
        <option value="RNPXlink3 (F)">RNPXlink3 (F)</option>
        <option value="RNPXlink4 (C)">RNPXlink4 (C)</option>
        <option value="RNPXlink5 (F)">RNPXlink5 (F)</option>
        <option value="RNPXlink5 (Y)">RNPXlink5 (Y)</option>
        <option value="Retinylidene (K)">Retinylidene (K)</option>
        <option value="SMA (K)">SMA (K)</option>
        <option value="SMA (N-term)">SMA (N-term)</option>
        <option value="SMCC-maleimide (C)">SMCC-maleimide (C)</option>
        <option value="SPITC (K)">SPITC (K)</option>
        <option value="SPITC (N-term)">SPITC (N-term)</option>
        <option value="SPITC:13C(6) (K)">SPITC:13C(6) (K)</option>
        <option value="SPITC:13C(6) (N-term)">SPITC:13C(6) (N-term)</option>
        <option value="SUMO2135 (K)">SUMO2135 (K)</option>
        <option value="SUMO3549 (K)">SUMO3549 (K)</option>
        <option value="Saligenin (H)">Saligenin (H)</option>
        <option value="Saligenin (K)">Saligenin (K)</option>
        <option value="SecCarbamidomethyl (C)">SecCarbamidomethyl (C)</option>
        <option value="SecNEM (C)">SecNEM (C)</option>
        <option value="SecNEM:2H(5) (C)">SecNEM:2H(5) (C)</option>
        <option value="Ser-&gt;Ala (S)">Ser-&gt;Ala (S)</option>
        <option value="Ser-&gt;Arg (S)">Ser-&gt;Arg (S)</option>
        <option value="Ser-&gt;Asn (S)">Ser-&gt;Asn (S)</option>
        <option value="Ser-&gt;Asp (S)">Ser-&gt;Asp (S)</option>
        <option value="Ser-&gt;Cys (S)">Ser-&gt;Cys (S)</option>
        <option value="Ser-&gt;Gln (S)">Ser-&gt;Gln (S)</option>
        <option value="Ser-&gt;Glu (S)">Ser-&gt;Glu (S)</option>
        <option value="Ser-&gt;Gly (S)">Ser-&gt;Gly (S)</option>
        <option value="Ser-&gt;His (S)">Ser-&gt;His (S)</option>
        <option value="Ser-&gt;Lys (S)">Ser-&gt;Lys (S)</option>
        <option value="Ser-&gt;Met (S)">Ser-&gt;Met (S)</option>
        <option value="Ser-&gt;Phe (S)">Ser-&gt;Phe (S)</option>
        <option value="Ser-&gt;Pro (S)">Ser-&gt;Pro (S)</option>
        <option value="Ser-&gt;Thr (S)">Ser-&gt;Thr (S)</option>
        <option value="Ser-&gt;Trp (S)">Ser-&gt;Trp (S)</option>
        <option value="Ser-&gt;Tyr (S)">Ser-&gt;Tyr (S)</option>
        <option value="Ser-&gt;Val (S)">Ser-&gt;Val (S)</option>
        <option value="Ser-&gt;Xle (S)">Ser-&gt;Xle (S)</option>
        <option value="Succinyl (K)">Succinyl (K)</option>
        <option value="Succinyl (N-term)">Succinyl (N-term)</option>
        <option value="Succinyl:13C(4) (K)">Succinyl:13C(4) (K)</option>
        <option value="Succinyl:13C(4) (N-term)">Succinyl:13C(4) (N-term)</option>
        <option value="Succinyl:2H(4) (K)">Succinyl:2H(4) (K)</option>
        <option value="Succinyl:2H(4) (N-term)">Succinyl:2H(4) (N-term)</option>
        <option value="SulfanilicAcid (C-term)">SulfanilicAcid (C-term)</option>
        <option value="SulfanilicAcid (D)">SulfanilicAcid (D)</option>
        <option value="SulfanilicAcid (E)">SulfanilicAcid (E)</option>
        <option value="SulfanilicAcid:13C(6) (C-term)">SulfanilicAcid:13C(6) (C-term)</option>
        <option value="SulfanilicAcid:13C(6) (D)">SulfanilicAcid:13C(6) (D)</option>
        <option value="SulfanilicAcid:13C(6) (E)">SulfanilicAcid:13C(6) (E)</option>
        <option value="Sulfide (C)">Sulfide (C)</option>
        <option value="Sulfide (D)">Sulfide (D)</option>
        <option value="Sulfide (W)">Sulfide (W)</option>
        <option value="Sulfo (C)">Sulfo (C)</option>
        <option value="Sulfo (S)">Sulfo (S)</option>
        <option value="Sulfo (T)">Sulfo (T)</option>
        <option value="Sulfo (Y)">Sulfo (Y)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (K)">Sulfo-NHS-LC-LC-Biotin (K)</option>
        <option value="Sulfo-NHS-LC-LC-Biotin (N-term)">Sulfo-NHS-LC-LC-Biotin (N-term)</option>
        <option value="SulfoGMBS (C)">SulfoGMBS (C)</option>
        <option value="SulfurDioxide (C)">SulfurDioxide (C)</option>
        <option value="TAMRA-FP (S)">TAMRA-FP (S)</option>
        <option value="TAMRA-FP (Y)">TAMRA-FP (Y)</option>
        <option value="TMAB (K)">TMAB (K)</option>
        <option value="TMAB (N-term)">TMAB (N-term)</option>
        <option value="TMAB:2H(9) (K)">TMAB:2H(9) (K)</option>
        <option value="TMAB:2H(9) (N-term)">TMAB:2H(9) (N-term)</option>
        <option value="TMPP-Ac (N-term)">TMPP-Ac (N-term)</option>
        <option value="TMT (H)">TMT (H)</option>
        <option value="TMT (K)">TMT (K)</option>
        <option value="TMT (N-term)">TMT (N-term)</option>
        <option value="TMT (S)">TMT (S)</option>
        <option value="TMT (T)">TMT (T)</option>
        <option value="TMT2plex (H)">TMT2plex (H)</option>
        <option value="TMT2plex (K)">TMT2plex (K)</option>
        <option value="TMT2plex (N-term)">TMT2plex (N-term)</option>
        <option value="TMT2plex (S)">TMT2plex (S)</option>
        <option value="TMT2plex (T)">TMT2plex (T)</option>
        <option value="TMT6plex (H)">TMT6plex (H)</option>
        <option value="TMT6plex (K)">TMT6plex (K)</option>
        <option value="TMT6plex (N-term)">TMT6plex (N-term)</option>
        <option value="TMT6plex (S)">TMT6plex (S)</option>
        <option value="TMT6plex (T)">TMT6plex (T)</option>
        <option value="TNBS (K)">TNBS (K)</option>
        <option value="TNBS (N-term)">TNBS (N-term)</option>
        <option value="Thiadiazole (C)">Thiadiazole (C)</option>
        <option value="Thiazolidine (N-term C)">Thiazolidine (N-term C)</option>
        <option value="Thioacyl (K)">Thioacyl (K)</option>
        <option value="Thioacyl (N-term)">Thioacyl (N-term)</option>
        <option value="Thiophos-S-S-biotin (S)">Thiophos-S-S-biotin (S)</option>
        <option value="Thiophos-S-S-biotin (T)">Thiophos-S-S-biotin (T)</option>
        <option value="Thiophos-S-S-biotin (Y)">Thiophos-S-S-biotin (Y)</option>
        <option value="Thiophospho (S)">Thiophospho (S)</option>
        <option value="Thiophospho (T)">Thiophospho (T)</option>
        <option value="Thiophospho (Y)">Thiophospho (Y)</option>
        <option value="Thr-&gt;Ala (T)">Thr-&gt;Ala (T)</option>
        <option value="Thr-&gt;Arg (T)">Thr-&gt;Arg (T)</option>
        <option value="Thr-&gt;Asn (T)">Thr-&gt;Asn (T)</option>
        <option value="Thr-&gt;Asp (T)">Thr-&gt;Asp (T)</option>
        <option value="Thr-&gt;Cys (T)">Thr-&gt;Cys (T)</option>
        <option value="Thr-&gt;Gln (T)">Thr-&gt;Gln (T)</option>
        <option value="Thr-&gt;Glu (T)">Thr-&gt;Glu (T)</option>
        <option value="Thr-&gt;Gly (T)">Thr-&gt;Gly (T)</option>
        <option value="Thr-&gt;His (T)">Thr-&gt;His (T)</option>
        <option value="Thr-&gt;Lys (T)">Thr-&gt;Lys (T)</option>
        <option value="Thr-&gt;Met (T)">Thr-&gt;Met (T)</option>
        <option value="Thr-&gt;Phe (T)">Thr-&gt;Phe (T)</option>
        <option value="Thr-&gt;Pro (T)">Thr-&gt;Pro (T)</option>
        <option value="Thr-&gt;Ser (T)">Thr-&gt;Ser (T)</option>
        <option value="Thr-&gt;Trp (T)">Thr-&gt;Trp (T)</option>
        <option value="Thr-&gt;Tyr (T)">Thr-&gt;Tyr (T)</option>
        <option value="Thr-&gt;Val (T)">Thr-&gt;Val (T)</option>
        <option value="Thr-&gt;Xle (T)">Thr-&gt;Xle (T)</option>
        <option value="Thrbiotinhydrazide (T)">Thrbiotinhydrazide (T)</option>
        <option value="Thyroxine (Y)">Thyroxine (Y)</option>
        <option value="Triiodo (Y)">Triiodo (Y)</option>
        <option value="Triiodothyronine (Y)">Triiodothyronine (Y)</option>
        <option value="Trimethyl (K)">Trimethyl (K)</option>
        <option value="Trimethyl (R)">Trimethyl (R)</option>
        <option value="Trimethyl:13C(3)2H(9) (K)">Trimethyl:13C(3)2H(9) (K)</option>
        <option value="Trimethyl:13C(3)2H(9) (R)">Trimethyl:13C(3)2H(9) (R)</option>
        <option value="Trimethyl:2H(9) (K)">Trimethyl:2H(9) (K)</option>
        <option value="Trimethyl:2H(9) (R)">Trimethyl:2H(9) (R)</option>
        <option value="Trioxidation (C)">Trioxidation (C)</option>
        <option value="Trioxidation (W)">Trioxidation (W)</option>
        <option value="Trioxidation (Y)">Trioxidation (Y)</option>
        <option value="Trp-&gt;Ala (W)">Trp-&gt;Ala (W)</option>
        <option value="Trp-&gt;Arg (W)">Trp-&gt;Arg (W)</option>
        <option value="Trp-&gt;Asn (W)">Trp-&gt;Asn (W)</option>
        <option value="Trp-&gt;Asp (W)">Trp-&gt;Asp (W)</option>
        <option value="Trp-&gt;Cys (W)">Trp-&gt;Cys (W)</option>
        <option value="Trp-&gt;Gln (W)">Trp-&gt;Gln (W)</option>
        <option value="Trp-&gt;Glu (W)">Trp-&gt;Glu (W)</option>
        <option value="Trp-&gt;Gly (W)">Trp-&gt;Gly (W)</option>
        <option value="Trp-&gt;His (W)">Trp-&gt;His (W)</option>
        <option value="Trp-&gt;Hydroxykynurenin (W)">Trp-&gt;Hydroxykynurenin (W)</option>
        <option value="Trp-&gt;Kynurenin (W)">Trp-&gt;Kynurenin (W)</option>
        <option value="Trp-&gt;Lys (W)">Trp-&gt;Lys (W)</option>
        <option value="Trp-&gt;Met (W)">Trp-&gt;Met (W)</option>
        <option value="Trp-&gt;Oxolactone (W)">Trp-&gt;Oxolactone (W)</option>
        <option value="Trp-&gt;Phe (W)">Trp-&gt;Phe (W)</option>
        <option value="Trp-&gt;Pro (W)">Trp-&gt;Pro (W)</option>
        <option value="Trp-&gt;Ser (W)">Trp-&gt;Ser (W)</option>
        <option value="Trp-&gt;Thr (W)">Trp-&gt;Thr (W)</option>
        <option value="Trp-&gt;Tyr (W)">Trp-&gt;Tyr (W)</option>
        <option value="Trp-&gt;Val (W)">Trp-&gt;Val (W)</option>
        <option value="Trp-&gt;Xle (W)">Trp-&gt;Xle (W)</option>
        <option value="Tyr-&gt;Ala (Y)">Tyr-&gt;Ala (Y)</option>
        <option value="Tyr-&gt;Arg (Y)">Tyr-&gt;Arg (Y)</option>
        <option value="Tyr-&gt;Asn (Y)">Tyr-&gt;Asn (Y)</option>
        <option value="Tyr-&gt;Asp (Y)">Tyr-&gt;Asp (Y)</option>
        <option value="Tyr-&gt;Cys (Y)">Tyr-&gt;Cys (Y)</option>
        <option value="Tyr-&gt;Dha (Y)">Tyr-&gt;Dha (Y)</option>
        <option value="Tyr-&gt;Gln (Y)">Tyr-&gt;Gln (Y)</option>
        <option value="Tyr-&gt;Glu (Y)">Tyr-&gt;Glu (Y)</option>
        <option value="Tyr-&gt;Gly (Y)">Tyr-&gt;Gly (Y)</option>
        <option value="Tyr-&gt;His (Y)">Tyr-&gt;His (Y)</option>
        <option value="Tyr-&gt;Lys (Y)">Tyr-&gt;Lys (Y)</option>
        <option value="Tyr-&gt;Met (Y)">Tyr-&gt;Met (Y)</option>
        <option value="Tyr-&gt;Phe (Y)">Tyr-&gt;Phe (Y)</option>
        <option value="Tyr-&gt;Pro (Y)">Tyr-&gt;Pro (Y)</option>
        <option value="Tyr-&gt;Ser (Y)">Tyr-&gt;Ser (Y)</option>
        <option value="Tyr-&gt;Thr (Y)">Tyr-&gt;Thr (Y)</option>
        <option value="Tyr-&gt;Trp (Y)">Tyr-&gt;Trp (Y)</option>
        <option value="Tyr-&gt;Val (Y)">Tyr-&gt;Val (Y)</option>
        <option value="Tyr-&gt;Xle (Y)">Tyr-&gt;Xle (Y)</option>
        <option value="Ub-Br2 (C)">Ub-Br2 (C)</option>
        <option value="Ub-VME (C)">Ub-VME (C)</option>
        <option value="Ub-amide (C)">Ub-amide (C)</option>
        <option value="Ub-fluorescein (C)">Ub-fluorescein (C)</option>
        <option value="UgiJoullie (D)">UgiJoullie (D)</option>
        <option value="UgiJoullie (E)">UgiJoullie (E)</option>
        <option value="UgiJoullieProGly (D)">UgiJoullieProGly (D)</option>
        <option value="UgiJoullieProGly (E)">UgiJoullieProGly (E)</option>
        <option value="UgiJoullieProGlyProGly (D)">UgiJoullieProGlyProGly (D)</option>
        <option value="UgiJoullieProGlyProGly (E)">UgiJoullieProGlyProGly (E)</option>
        <option value="VFQQQTGG (K)">VFQQQTGG (K)</option>
        <option value="VIEVYQEQTGG (K)">VIEVYQEQTGG (K)</option>
        <option value="Val-&gt;Ala (V)">Val-&gt;Ala (V)</option>
        <option value="Val-&gt;Arg (V)">Val-&gt;Arg (V)</option>
        <option value="Val-&gt;Asn (V)">Val-&gt;Asn (V)</option>
        <option value="Val-&gt;Asp (V)">Val-&gt;Asp (V)</option>
        <option value="Val-&gt;Cys (V)">Val-&gt;Cys (V)</option>
        <option value="Val-&gt;Gln (V)">Val-&gt;Gln (V)</option>
        <option value="Val-&gt;Glu (V)">Val-&gt;Glu (V)</option>
        <option value="Val-&gt;Gly (V)">Val-&gt;Gly (V)</option>
        <option value="Val-&gt;His (V)">Val-&gt;His (V)</option>
        <option value="Val-&gt;Lys (V)">Val-&gt;Lys (V)</option>
        <option value="Val-&gt;Met (V)">Val-&gt;Met (V)</option>
        <option value="Val-&gt;Phe (V)">Val-&gt;Phe (V)</option>
        <option value="Val-&gt;Pro (V)">Val-&gt;Pro (V)</option>
        <option value="Val-&gt;Ser (V)">Val-&gt;Ser (V)</option>
        <option value="Val-&gt;Thr (V)">Val-&gt;Thr (V)</option>
        <option value="Val-&gt;Trp (V)">Val-&gt;Trp (V)</option>
        <option value="Val-&gt;Tyr (V)">Val-&gt;Tyr (V)</option>
        <option value="Val-&gt;Xle (V)">Val-&gt;Xle (V)</option>
        <option value="Withaferin (C)">Withaferin (C)</option>
        <option value="Xle-&gt;Ala (I)">Xle-&gt;Ala (I)</option>
        <option value="Xle-&gt;Ala (L)">Xle-&gt;Ala (L)</option>
        <option value="Xle-&gt;Arg (I)">Xle-&gt;Arg (I)</option>
        <option value="Xle-&gt;Arg (L)">Xle-&gt;Arg (L)</option>
        <option value="Xle-&gt;Asn (I)">Xle-&gt;Asn (I)</option>
        <option value="Xle-&gt;Asn (L)">Xle-&gt;Asn (L)</option>
        <option value="Xle-&gt;Asp (I)">Xle-&gt;Asp (I)</option>
        <option value="Xle-&gt;Asp (L)">Xle-&gt;Asp (L)</option>
        <option value="Xle-&gt;Cys (I)">Xle-&gt;Cys (I)</option>
        <option value="Xle-&gt;Cys (L)">Xle-&gt;Cys (L)</option>
        <option value="Xle-&gt;Gln (I)">Xle-&gt;Gln (I)</option>
        <option value="Xle-&gt;Gln (L)">Xle-&gt;Gln (L)</option>
        <option value="Xle-&gt;Glu (I)">Xle-&gt;Glu (I)</option>
        <option value="Xle-&gt;Glu (L)">Xle-&gt;Glu (L)</option>
        <option value="Xle-&gt;Gly (I)">Xle-&gt;Gly (I)</option>
        <option value="Xle-&gt;Gly (L)">Xle-&gt;Gly (L)</option>
        <option value="Xle-&gt;His (I)">Xle-&gt;His (I)</option>
        <option value="Xle-&gt;His (L)">Xle-&gt;His (L)</option>
        <option value="Xle-&gt;Lys (I)">Xle-&gt;Lys (I)</option>
        <option value="Xle-&gt;Lys (L)">Xle-&gt;Lys (L)</option>
        <option value="Xle-&gt;Met (I)">Xle-&gt;Met (I)</option>
        <option value="Xle-&gt;Met (L)">Xle-&gt;Met (L)</option>
        <option value="Xle-&gt;Phe (I)">Xle-&gt;Phe (I)</option>
        <option value="Xle-&gt;Phe (L)">Xle-&gt;Phe (L)</option>
        <option value="Xle-&gt;Pro (I)">Xle-&gt;Pro (I)</option>
        <option value="Xle-&gt;Pro (L)">Xle-&gt;Pro (L)</option>
        <option value="Xle-&gt;Ser (I)">Xle-&gt;Ser (I)</option>
        <option value="Xle-&gt;Ser (L)">Xle-&gt;Ser (L)</option>
        <option value="Xle-&gt;Thr (I)">Xle-&gt;Thr (I)</option>
        <option value="Xle-&gt;Thr (L)">Xle-&gt;Thr (L)</option>
        <option value="Xle-&gt;Trp (I)">Xle-&gt;Trp (I)</option>
        <option value="Xle-&gt;Trp (L)">Xle-&gt;Trp (L)</option>
        <option value="Xle-&gt;Tyr (I)">Xle-&gt;Tyr (I)</option>
        <option value="Xle-&gt;Tyr (L)">Xle-&gt;Tyr (L)</option>
        <option value="Xle-&gt;Val (I)">Xle-&gt;Val (I)</option>
        <option value="Xle-&gt;Val (L)">Xle-&gt;Val (L)</option>
        <option value="Xlink:B10621 (C)">Xlink:B10621 (C)</option>
        <option value="Xlink:DMP (K)">Xlink:DMP (K)</option>
        <option value="Xlink:DMP-de (K)">Xlink:DMP-de (K)</option>
        <option value="Xlink:DMP-s (K)">Xlink:DMP-s (K)</option>
        <option value="Xlink:DSS (K)">Xlink:DSS (K)</option>
        <option value="Xlink:DST (K)">Xlink:DST (K)</option>
        <option value="Xlink:DTSSP (K)">Xlink:DTSSP (K)</option>
        <option value="Xlink:EGS (K)">Xlink:EGS (K)</option>
        <option value="Xlink:EGScleaved (K)">Xlink:EGScleaved (K)</option>
        <option value="Xlink:SMCC (C)">Xlink:SMCC (C)</option>
        <option value="Xlink:SSD (K)">Xlink:SSD (K)</option>
        <option value="ZGB (K)">ZGB (K)</option>
        <option value="ZGB (N-term)">ZGB (N-term)</option>
        <option value="a-type-ion (C-term)">a-type-ion (C-term)</option>
        <option value="azole (C)">azole (C)</option>
        <option value="azole (S)">azole (S)</option>
        <option value="benzylguanidine (K)">benzylguanidine (K)</option>
        <option value="biotinAcrolein298 (C)">biotinAcrolein298 (C)</option>
        <option value="biotinAcrolein298 (H)">biotinAcrolein298 (H)</option>
        <option value="biotinAcrolein298 (K)">biotinAcrolein298 (K)</option>
        <option value="bisANS-sulfonates (K)">bisANS-sulfonates (K)</option>
        <option value="bisANS-sulfonates (S)">bisANS-sulfonates (S)</option>
        <option value="bisANS-sulfonates (T)">bisANS-sulfonates (T)</option>
        <option value="cGMP (C)">cGMP (C)</option>
        <option value="cGMP (S)">cGMP (S)</option>
        <option value="cGMP+RMP-loss (C)">cGMP+RMP-loss (C)</option>
        <option value="cGMP+RMP-loss (S)">cGMP+RMP-loss (S)</option>
        <option value="cysTMT (C)">cysTMT (C)</option>
        <option value="cysTMT6plex (C)">cysTMT6plex (C)</option>
        <option value="dHex (N)">dHex (N)</option>
        <option value="dHex (S)">dHex (S)</option>
        <option value="dHex (T)">dHex (T)</option>
        <option value="dHex(1)Hex(1) (S)">dHex(1)Hex(1) (S)</option>
        <option value="dHex(1)Hex(1) (T)">dHex(1)Hex(1) (T)</option>
        <option value="dHex(1)Hex(2) (S)">dHex(1)Hex(2) (S)</option>
        <option value="dHex(1)Hex(2) (T)">dHex(1)Hex(2) (T)</option>
        <option value="dHex(1)Hex(3) (S)">dHex(1)Hex(3) (S)</option>
        <option value="dHex(1)Hex(3) (T)">dHex(1)Hex(3) (T)</option>
        <option value="dHex(1)Hex(3)HexNAc(4) (N)">dHex(1)Hex(3)HexNAc(4) (N)</option>
        <option value="dHex(1)Hex(4) (S)">dHex(1)Hex(4) (S)</option>
        <option value="dHex(1)Hex(4) (T)">dHex(1)Hex(4) (T)</option>
        <option value="dHex(1)Hex(4)HexNAc(4) (N)">dHex(1)Hex(4)HexNAc(4) (N)</option>
        <option value="dHex(1)Hex(5) (S)">dHex(1)Hex(5) (S)</option>
        <option value="dHex(1)Hex(5) (T)">dHex(1)Hex(5) (T)</option>
        <option value="dHex(1)Hex(5)HexNAc(4) (N)">dHex(1)Hex(5)HexNAc(4) (N)</option>
        <option value="dHex(1)Hex(5)HexNAc(4)NeuAc(1) (N)">dHex(1)Hex(5)HexNAc(4)NeuAc(1) (N)</option>
        <option value="dHex(1)Hex(5)HexNAc(4)NeuAc(2) (N)">dHex(1)Hex(5)HexNAc(4)NeuAc(2) (N)</option>
        <option value="dHex(1)Hex(6) (S)">dHex(1)Hex(6) (S)</option>
        <option value="dHex(1)Hex(6) (T)">dHex(1)Hex(6) (T)</option>
        <option value="dNIC (K)">dNIC (K)</option>
        <option value="dNIC (N-term)">dNIC (N-term)</option>
        <option value="dichlorination (C)">dichlorination (C)</option>
        <option value="dichlorination (Y)">dichlorination (Y)</option>
        <option value="ethylamino (S)">ethylamino (S)</option>
        <option value="ethylamino (T)">ethylamino (T)</option>
        <option value="ethylsulfonylethyl (C)">ethylsulfonylethyl (C)</option>
        <option value="ethylsulfonylethyl (H)">ethylsulfonylethyl (H)</option>
        <option value="ethylsulfonylethyl (K)">ethylsulfonylethyl (K)</option>
        <option value="glucosone (R)">glucosone (R)</option>
        <option value="glycidamide (K)">glycidamide (K)</option>
        <option value="glycidamide (N-term)">glycidamide (N-term)</option>
        <option value="iTRAQ4plex (H)">iTRAQ4plex (H)</option>
        <option value="iTRAQ4plex (K)">iTRAQ4plex (K)</option>
        <option value="iTRAQ4plex (N-term)">iTRAQ4plex (N-term)</option>
        <option value="iTRAQ4plex (S)">iTRAQ4plex (S)</option>
        <option value="iTRAQ4plex (T)">iTRAQ4plex (T)</option>
        <option value="iTRAQ4plex (Y)">iTRAQ4plex (Y)</option>
        <option value="iTRAQ4plex114 (K)">iTRAQ4plex114 (K)</option>
        <option value="iTRAQ4plex114 (N-term)">iTRAQ4plex114 (N-term)</option>
        <option value="iTRAQ4plex114 (Y)">iTRAQ4plex114 (Y)</option>
        <option value="iTRAQ4plex115 (K)">iTRAQ4plex115 (K)</option>
        <option value="iTRAQ4plex115 (N-term)">iTRAQ4plex115 (N-term)</option>
        <option value="iTRAQ4plex115 (Y)">iTRAQ4plex115 (Y)</option>
        <option value="iTRAQ8plex (H)">iTRAQ8plex (H)</option>
        <option value="iTRAQ8plex (K)">iTRAQ8plex (K)</option>
        <option value="iTRAQ8plex (N-term)">iTRAQ8plex (N-term)</option>
        <option value="iTRAQ8plex (S)">iTRAQ8plex (S)</option>
        <option value="iTRAQ8plex (T)">iTRAQ8plex (T)</option>
        <option value="iTRAQ8plex (Y)">iTRAQ8plex (Y)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (K)">iTRAQ8plex:13C(6)15N(2) (K)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (N-term)">iTRAQ8plex:13C(6)15N(2) (N-term)</option>
        <option value="iTRAQ8plex:13C(6)15N(2) (Y)">iTRAQ8plex:13C(6)15N(2) (Y)</option>
        <option value="iodoTMT (C)">iodoTMT (C)</option>
        <option value="iodoTMT (D)">iodoTMT (D)</option>
        <option value="iodoTMT (E)">iodoTMT (E)</option>
        <option value="iodoTMT (H)">iodoTMT (H)</option>
        <option value="iodoTMT (K)">iodoTMT (K)</option>
        <option value="iodoTMT6plex (C)">iodoTMT6plex (C)</option>
        <option value="iodoTMT6plex (D)">iodoTMT6plex (D)</option>
        <option value="iodoTMT6plex (E)">iodoTMT6plex (E)</option>
        <option value="iodoTMT6plex (H)">iodoTMT6plex (H)</option>
        <option value="iodoTMT6plex (K)">iodoTMT6plex (K)</option>
        <option value="lapachenole (C)">lapachenole (C)</option>
        <option value="mTRAQ (H)">mTRAQ (H)</option>
        <option value="mTRAQ (K)">mTRAQ (K)</option>
        <option value="mTRAQ (N-term)">mTRAQ (N-term)</option>
        <option value="mTRAQ (S)">mTRAQ (S)</option>
        <option value="mTRAQ (T)">mTRAQ (T)</option>
        <option value="mTRAQ (Y)">mTRAQ (Y)</option>
        <option value="mTRAQ:13C(3)15N(1) (H)">mTRAQ:13C(3)15N(1) (H)</option>
        <option value="mTRAQ:13C(3)15N(1) (K)">mTRAQ:13C(3)15N(1) (K)</option>
        <option value="mTRAQ:13C(3)15N(1) (N-term)">mTRAQ:13C(3)15N(1) (N-term)</option>
        <option value="mTRAQ:13C(3)15N(1) (S)">mTRAQ:13C(3)15N(1) (S)</option>
        <option value="mTRAQ:13C(3)15N(1) (T)">mTRAQ:13C(3)15N(1) (T)</option>
        <option value="mTRAQ:13C(3)15N(1) (Y)">mTRAQ:13C(3)15N(1) (Y)</option>
        <option value="mTRAQ:13C(6)15N(2) (H)">mTRAQ:13C(6)15N(2) (H)</option>
        <option value="mTRAQ:13C(6)15N(2) (K)">mTRAQ:13C(6)15N(2) (K)</option>
        <option value="mTRAQ:13C(6)15N(2) (N-term)">mTRAQ:13C(6)15N(2) (N-term)</option>
        <option value="mTRAQ:13C(6)15N(2) (S)">mTRAQ:13C(6)15N(2) (S)</option>
        <option value="mTRAQ:13C(6)15N(2) (T)">mTRAQ:13C(6)15N(2) (T)</option>
        <option value="mTRAQ:13C(6)15N(2) (Y)">mTRAQ:13C(6)15N(2) (Y)</option>
        <option value="maleimide (C)">maleimide (C)</option>
        <option value="maleimide (K)">maleimide (K)</option>
        <option value="maleimide3 (C)">maleimide3 (C)</option>
        <option value="maleimide3 (K)">maleimide3 (K)</option>
        <option value="maleimide5 (C)">maleimide5 (C)</option>
        <option value="maleimide5 (K)">maleimide5 (K)</option>
        <option value="methylsulfonylethyl (C)">methylsulfonylethyl (C)</option>
        <option value="methylsulfonylethyl (H)">methylsulfonylethyl (H)</option>
        <option value="methylsulfonylethyl (K)">methylsulfonylethyl (K)</option>
        <option value="phenylsulfonylethyl (C)">phenylsulfonylethyl (C)</option>
        <option value="phosphoRibosyl (D)">phosphoRibosyl (D)</option>
        <option value="phosphoRibosyl (E)">phosphoRibosyl (E)</option>
        <option value="phosphoRibosyl (R)">phosphoRibosyl (R)</option>
        <option value="probiotinhydrazide (P)">probiotinhydrazide (P)</option>
        <option value="pupylation (K)">pupylation (K)</option>
        <option value="pyrophospho (S)">pyrophospho (S)</option>
        <option value="pyrophospho (T)">pyrophospho (T)</option>
        <option value="sulfo+amino (Y)">sulfo+amino (Y)</option>
        <option value="thioacylPA (K)">thioacylPA (K)</option>
        <option value="trifluoro (L)">trifluoro (L)</option>
      </param>
    </repeat>
    <param name="param_Mascot_parameters_mass_type" display="radio" type="select" optional="False" value="monoisotopic" label="Defines the mass type, either monoisotopic or average" help="(-mass_type) ">
      <option value="monoisotopic" selected="true">monoisotopic</option>
      <option value="average">average</option>
    </param>
    <param name="param_Mascot_parameters_number_of_hits" type="integer" min="0" optional="True" value="0" label="Number of hits which should be returned, if 0 AUTO mode is enabled" help="(-number_of_hits) "/>
    <param name="param_Mascot_parameters_skip_spectrum_charges" display="radio" type="boolean" truevalue="-Mascot_parameters:skip_spectrum_charges" falsevalue="" checked="false" optional="True" label="Sometimes precursor charges are given for each spectrum but are wrong, setting this to 'true' does not write any charge information to the spectrum, the general charge information is however kept" help="(-skip_spectrum_charges) "/>
    <param name="param_Mascot_parameters_email" type="text" size="30" label="Sets the email which is mentioned in the results file" help="(-email) Note: Some server require that a proper email is provided">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_server_hostname" type="text" size="30" label="Address of the host where Mascot listens," help="(-hostname) e.g. 'mascot-server' or '127.0.0.1'">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_server_host_port" type="integer" min="0" optional="True" value="80" label="Port where the Mascot server listens, 80 should be a good guess" help="(-host_port) "/>
    <param name="param_Mascot_server_server_path" type="text" size="30" value="mascot" label="Path on the server where Mascot server listens, 'mascot' should be a good guess" help="(-server_path) ">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_server_timeout" type="integer" min="0" optional="True" value="1500" label="Timeout in seconds, after which the query is declared as failed.This is NOT the whole time the search takes, but the time in between two progress steps" help="(-timeout) Some Mascot servers freeze during this (unstable network etc) and idle forever, the connection is killed. Set this to 0 to disable timeout!"/>
    <param name="param_Mascot_server_login" display="radio" type="boolean" truevalue="-Mascot_server:login" falsevalue="" checked="false" optional="True" label="Flag which should be set 'true' if Mascot security is enabled; also set 'username' and 'password' then" help="(-login) "/>
    <param name="param_Mascot_server_username" type="text" size="30" label="Name of the user if login is used (Mascot security must be enabled!)" help="(-username) ">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_server_password" type="text" size="30" label="Password of the user if login is used (Mascot security must be enabled!)" help="(-password) ">
      <sanitizer>
        <valid initial="string.printable">
          <remove value="'"/>
          <remove value="&quot;"/>
        </valid>
      </sanitizer>
    </param>
    <param name="param_Mascot_server_use_ssl" display="radio" type="boolean" truevalue="-Mascot_server:use_ssl" falsevalue="" checked="false" optional="True" label="Flag indicating wether the server uses HTTPS or not" help="(-use_ssl) "/>
    <expand macro="advanced_options">
      <param name="param_keep_protein_links" display="radio" type="boolean" truevalue="-keep_protein_links" falsevalue="" checked="false" optional="True" label="The Mascot response file usually returns incomplete/wrong protein hits, so re-indexing the peptide hits is required" help="(-keep_protein_links) To avoid confusion why there are so few protein hits and force re-indexing, no proteins should be reported. To see the original (wrong) list, enable this flag"/>
      <param name="param_force" display="radio" type="boolean" truevalue="-force" falsevalue="" checked="false" optional="True" label="Overwrite tool specific checks" help="(-force) "/>
      <param name="param_Mascot_parameters_search_type" display="radio" type="select" optional="False" value="MIS" label="Name of the search type for the query" help="(-search_type) ">
        <option value="MIS" selected="true">MIS</option>
        <option value="SQ">SQ</option>
        <option value="PMF">PMF</option>
      </param>
      <param name="param_Mascot_parameters_special_modifications" type="text" size="30" value="Cation:Na (DE),Deamidated (NQ),Oxidation (HW),Phospho (ST),Sulfo (ST)" label="Modifications with specificity groups that are used by Mascot and have to be treated specially" help="(-special_modifications) ">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_parameters_search_title" type="text" size="30" value="OpenMS_search" label="Sets the title of the search" help="(-search_title) ">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_parameters_username" type="text" size="30" value="OpenMS" label="Sets the username which is mentioned in the results file" help="(-username) ">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_server_boundary" type="text" size="30" value="GZWgAaYKjHFeUaLOLEIOMq" label="Boundary for the MIME section" help="(-boundary) ">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_server_use_proxy" display="radio" type="boolean" truevalue="-Mascot_server:use_proxy" falsevalue="" checked="false" optional="True" label="Flag which enables the proxy usage for the HTTP requests, please specify at least 'proxy_host' and 'proxy_port'" help="(-use_proxy) "/>
      <param name="param_Mascot_server_proxy_host" type="text" size="30" label="Host where the proxy server runs on" help="(-proxy_host) ">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_server_proxy_port" type="integer" min="0" optional="True" value="0" label="Port where the proxy server listens" help="(-proxy_port) "/>
      <param name="param_Mascot_server_proxy_username" type="text" size="30" label="Login name for the proxy server, if needed" help="(-proxy_username) ">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_server_proxy_password" type="text" size="30" label="Login password for the proxy server, if needed" help="(-proxy_password) ">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_server_export_params" type="text" size="30" value="_ignoreionsscorebelow=0&amp;_sigthreshold=0.99&amp;_showsubsets=1&amp;show_same_sets=1&amp;report=0&amp;percolate=0&amp;query_master=0" label="Adjustable export parameters (passed to Mascot's 'export_dat_2.pl' script)" help="(-export_params) Generally only parameters that control which hits to export are safe to adjust/add. Many settings that govern what types of information to include are required by OpenMS and cannot be changed. Note that setting 'query_master' to 1 may lead to incorrect protein references for peptides">
        <sanitizer>
          <valid initial="string.printable">
            <remove value="'"/>
            <remove value="&quot;"/>
          </valid>
        </sanitizer>
      </param>
      <param name="param_Mascot_server_skip_export" display="radio" type="boolean" truevalue="-Mascot_server:skip_export" falsevalue="" checked="false" optional="True" label="For use with an external Mascot Percolator (via GenericWrapper): Run the Mascot search, but do not export the results" help="(-skip_export) The output file produced by MascotAdapterOnline will contain only the Mascot search number"/>
    </expand>
  </inputs>
  <outputs>
    <data name="param_out" format="idxml"/>
  </outputs>
  <help>Annotates MS/MS spectra using Mascot.


For more information, visit http://ftp.mi.fu-berlin.de/OpenMS/release-documentation/html/TOPP_MascotAdapterOnline.html</help>
</tool>