view MyriMatchAdapter.xml @ 4:6ead64a594bd draft default tip

planemo upload for repository https://github.com/bgruening/galaxytools/tree/master/tools/openms commit 7a5239910fda9ed90cca286a38855703b40b1b56-dirty
author bgruening
date Wed, 27 Jan 2016 10:06:49 -0500
parents 3d84209d3178
children
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="MyriMatchAdapter" name="MyriMatchAdapter" version="2.0.0">
    <description>Annotates MS/MS spectra using MyriMatch.</description>
    <macros>
      <token name="@EXECUTABLE@">MyriMatchAdapter</token>
      <import>macros.xml</import>
    </macros>
    <expand macro="references"/>
    <expand macro="stdio"/>
    <expand macro="requirements"/>
    <command>MyriMatchAdapter

#if $param_in:
  -in $param_in
#end if
#if $param_out:
  -out $param_out
#end if
#if $param_precursor_mass_tolerance:
  -precursor_mass_tolerance $param_precursor_mass_tolerance
#end if
#if $param_precursor_mass_tolerance_unit:
  -precursor_mass_tolerance_unit
  #if &quot; &quot; in str($param_precursor_mass_tolerance_unit):
    &quot;$param_precursor_mass_tolerance_unit&quot;
  #else
    $param_precursor_mass_tolerance_unit
  #end if
#end if
#if $param_precursor_mass_tolerance_avg:
  -precursor_mass_tolerance_avg
#end if
#if $param_fragment_mass_tolerance:
  -fragment_mass_tolerance $param_fragment_mass_tolerance
#end if
#if $param_fragment_mass_tolerance_unit:
  -fragment_mass_tolerance_unit
  #if &quot; &quot; in str($param_fragment_mass_tolerance_unit):
    &quot;$param_fragment_mass_tolerance_unit&quot;
  #else
    $param_fragment_mass_tolerance_unit
  #end if
#end if
#if $param_database:
  -database $param_database
#end if
#if $param_min_precursor_charge:
  -min_precursor_charge $param_min_precursor_charge
#end if
#if $param_max_precursor_charge:
  -max_precursor_charge $param_max_precursor_charge
#end if

#if $rep_param_fixed_modifications:
-fixed_modifications
  #for token in $rep_param_fixed_modifications:
    #if &quot; &quot; in str(token):
      &quot;$token.param_fixed_modifications&quot;
    #else
      $token.param_fixed_modifications
    #end if
  #end for
#end if

#if $rep_param_variable_modifications:
-variable_modifications
  #for token in $rep_param_variable_modifications:
    #if &quot; &quot; in str(token):
      &quot;$token.param_variable_modifications&quot;
    #else
      $token.param_variable_modifications
    #end if
  #end for
#end if
-myrimatch_executable myrimatch
#if $param_NumChargeStates:
  -NumChargeStates $param_NumChargeStates
#end if
#if $param_TicCutoffPercentage:
  -TicCutoffPercentage $param_TicCutoffPercentage
#end if
#if $param_MaxDynamicMods:
  -MaxDynamicMods $param_MaxDynamicMods
#end if
#if $param_MaxResultRank:
  -MaxResultRank $param_MaxResultRank
#end if
#if $param_CleavageRules:
  -CleavageRules
  #if &quot; &quot; in str($param_CleavageRules):
    &quot;$param_CleavageRules&quot;
  #else
    $param_CleavageRules
  #end if
#end if
#if $param_MinTerminiCleavages:
  -MinTerminiCleavages $param_MinTerminiCleavages
#end if
#if $param_MaxMissedCleavages:
  -MaxMissedCleavages $param_MaxMissedCleavages
#end if
-threads \${GALAXY_SLOTS:-24}
#if $adv_opts.adv_opts_selector=='advanced':
    #if $adv_opts.param_MinPeptideMass:
  -MinPeptideMass $adv_opts.param_MinPeptideMass
#end if
    #if $adv_opts.param_MaxPeptideMass:
  -MaxPeptideMass $adv_opts.param_MaxPeptideMass
#end if
    #if $adv_opts.param_MinPeptideLength:
  -MinPeptideLength $adv_opts.param_MinPeptideLength
#end if
    #if $adv_opts.param_MaxPeptideLength:
  -MaxPeptideLength $adv_opts.param_MaxPeptideLength
#end if
    #if $adv_opts.param_UseSmartPlusThreeModel:
  -UseSmartPlusThreeModel
#end if
    #if $adv_opts.param_NumIntensityClasses:
  -NumIntensityClasses $adv_opts.param_NumIntensityClasses
#end if
    #if $adv_opts.param_ClassSizeMultiplier:
  -ClassSizeMultiplier $adv_opts.param_ClassSizeMultiplier
#end if
    #if $adv_opts.param_MonoisotopeAdjustmentSet:
  -MonoisotopeAdjustmentSet     &quot;$adv_opts.param_MonoisotopeAdjustmentSet&quot;
#end if
    #if $adv_opts.param_force:
  -force
#end if
#end if
</command>
    <inputs>
      <param format="mzml" help="(-in) " label="Input file" name="param_in" optional="False" type="data"/>
      <param help="(-precursor_mass_tolerance) " label="Precursor mono mass tolerance" name="param_precursor_mass_tolerance" type="float" value="1.5"/>
      <param help="(-precursor_mass_tolerance_unit) " label="Unit to be used for precursor mass tolerance" name="param_precursor_mass_tolerance_unit" optional="True" type="select" value="Da">
        <option value="Da">Da</option>
        <option value="ppm">ppm</option>
      </param>
      <param checked="false" falsevalue="" help="(-precursor_mass_tolerance_avg) " label="If this flag is set, the average mass is used in the precursor mass tolerance" name="param_precursor_mass_tolerance_avg" optional="True" truevalue="-precursor_mass_tolerance_avg" type="boolean"/>
      <param help="(-fragment_mass_tolerance) " label="Fragment mass error in Dalton" name="param_fragment_mass_tolerance" type="float" value="0.3"/>
      <param help="(-fragment_mass_tolerance_unit) " label="Unit to be used for fragment mass tolerance" name="param_fragment_mass_tolerance_unit" optional="True" type="select" value="Da">
        <option value="Da">Da</option>
        <option value="ppm">ppm</option>
      </param>
      <param format="fasta" help="(-database) " label="FASTA protein database" name="param_database" optional="False" type="data"/>
      <param help="(-min_precursor_charge) " label="Minimum precursor ion charge" name="param_min_precursor_charge" type="integer" value="1"/>
      <param help="(-max_precursor_charge) " label="Maximum precursor ion charge" name="param_max_precursor_charge" type="integer" value="3"/>
      <repeat min="0" name="rep_param_fixed_modifications" title="param_fixed_modifications">
        <param help="(-fixed_modifications) e.g. 'Carbamidomethyl (C)' or 'Oxidation (M)'" label="Fixed modifications, specified using UniMod (www.unimod.org) terms," name="param_fixed_modifications" optional="True" type="select">
          <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 min="0" name="rep_param_variable_modifications" title="param_variable_modifications">
        <param help="(-variable_modifications) e.g. 'Carbamidomethyl (C)' or 'Oxidation (M)'" label="Variable modifications, specified using UniMod (www.unimod.org) terms," name="param_variable_modifications" optional="True" type="select">
          <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 help="(-NumChargeStates) " label="The number of charge states that MyriMatch will handle during all stages of the program" name="param_NumChargeStates" type="integer" value="3"/>
      <param help="(-TicCutoffPercentage) " label="Noise peaks are filtered out by sorting the original peaks in descending order of intensity, and then picking peaks from that list until the cumulative ion current of the picked peaks divided by the total ion current (TIC) is greater than or equal to this paramete" name="param_TicCutoffPercentage" type="float" value="0.98"/>
      <param help="(-MaxDynamicMods) " label="This parameter sets the maximum number of modified residues that may be in any candidate sequence" name="param_MaxDynamicMods" type="integer" value="2"/>
      <param help="(-MaxResultRank) " label="This parameter sets the maximum rank of peptide-spectrum-matches to report for each spectrum" name="param_MaxResultRank" type="integer" value="5"/>
      <param help="(-CleavageRules) For more details, see http://www.ebi.ac.uk/ontology-lookup/browse.do?ontName=MS&amp;termId=MS:1001045&amp;termName=cleavage%20agent%20name " label="This parameter allows the user to control the way peptides are generated from the protein database" name="param_CleavageRules" optional="True" type="select">
        <option value="Trypsin">Trypsin</option>
        <option value="Trypsin/P">Trypsin/P</option>
        <option value="Arg-C">Arg-C</option>
        <option value="Asp-N">Asp-N</option>
        <option value="Asp-N_ambic">Asp-N_ambic</option>
        <option value="CNBr">CNBr</option>
        <option value="Chymotrypsin">Chymotrypsin</option>
        <option value="Formic_acid">Formic_acid</option>
        <option value="Lys-C">Lys-C</option>
        <option value="Lys-C/P">Lys-C/P</option>
        <option value="PepsinA">PepsinA</option>
        <option value="TrypChymo">TrypChymo</option>
        <option value="V8-DE">V8-DE</option>
        <option value="V8-E">V8-E</option>
        <option value="glutamyl endopeptidase">glutamyl endopeptidase</option>
        <option value="leukocyte elastase">leukocyte elastase</option>
        <option value="no cleavage">no cleavage</option>
        <option value="proline endopeptidase">proline endopeptidase</option>
        <option value="unspecific cleavage">unspecific cleavage</option>
      </param>
      <param help="(-MinTerminiCleavages) Setting this parameter to 0 or 1 will reduce that requirement, so that neither terminus or only one terminus of the peptide must match one of the cleavage rules specified in the CleavageRules parameter. This parameter is useful to turn a tryptic digest into a semi-tryptic digest" label="By default, when generating peptides from the protein database, a peptide must start and end at a valid cleavage site" name="param_MinTerminiCleavages" type="integer" value="2"/>
      <param help="(-MaxMissedCleavages) A missed cleavage is a site within the peptide that matches one of the cleavage rules (refer to CleavageRules). Settings this parameter to some other number will stop generating peptides from a sequence if it contains more than the specified number of missed cleavages" label="By default, when generating peptides from the protein database, a peptide may contain any number of missed cleavages" name="param_MaxMissedCleavages" type="integer" value="-1"/>
      <expand macro="advanced_options">
        <param help="(-MinPeptideMass) " label="When preprocessing the experimental spectra, any spectrum with a precursor mass that is less than the specified mass will be disqualified" name="param_MinPeptideMass" type="float" value="0.0"/>
        <param help="(-MaxPeptideMass) " label="When preprocessing the experimental spectra, any spectrum with a precursor mass that exceeds the specified mass will be disqualified" name="param_MaxPeptideMass" type="float" value="10000.0"/>
        <param help="(-MinPeptideLength) " label="When digesting proteins, any peptide which does not meet or exceed the specified length will be disqualified" name="param_MinPeptideLength" type="integer" value="5"/>
        <param help="(-MaxPeptideLength) " label="When digesting proteins, any peptide which exceeds this specified length will be disqualified" name="param_MaxPeptideLength" type="integer" value="75"/>
        <param checked="false" falsevalue="" help="(-UseSmartPlusThreeModel) The precursors protons are distributed to those ions based on that calculation, with the more basic sequence generally getting more of the protons" label="When this parameter is set, then for each peptide bond, an internal calculation is done to estimate the basicity of the b and y fragment sequence" name="param_UseSmartPlusThreeModel" optional="True" truevalue="-UseSmartPlusThreeModel" type="boolean"/>
        <param help="(-NumIntensityClasses) " label="Before scoring any candidates, experimental spectra have their peaks stratified into the number of intensity classes specified by this paramete" name="param_NumIntensityClasses" type="integer" value="3"/>
        <param help="(-ClassSizeMultiplier) " label="When stratifying peaks into a specified, fixed number of intensity classes, this parameter controls the size of each class relative to the class above it (where the peaks are more intense)" name="param_ClassSizeMultiplier" type="float" value="2.0"/>
        <param help="(-MonoisotopeAdjustmentSet) To disable this technique, set the value to '0'" label="This parameter defines a set of isotopes (0 being the instrument-called monoisotope) to try as the monoisotopic precursor m/z" name="param_MonoisotopeAdjustmentSet" size="30" type="text" value="0">
          <sanitizer>
            <valid initial="string.printable">
              <remove value="'"/>
              <remove value="&quot;"/>
            </valid>
          </sanitizer>
        </param>
        <param checked="false" falsevalue="" help="(-force) " label="Overwrite tool specific checks" name="param_force" optional="True" truevalue="-force" type="boolean"/>
      </expand>
    </inputs>
    <outputs>
      <data format="xml" name="param_out"/>
    </outputs>
    <help>Annotates MS/MS spectra using MyriMatch.


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