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|  | 18 <p> | 
|  | 19 </p> | 
|  | 20 <h2>NAME</h2> | 
|  | 21 <p>HydrogenBondsDescriptors</p> | 
|  | 22 <p> | 
|  | 23 </p> | 
|  | 24 <h2>SYNOPSIS</h2> | 
|  | 25 <p>use MolecularDescriptors::HydrogenBondsDescriptors;</p> | 
|  | 26 <p>use MolecularDescriptors::HydrogenBondsDescriptors qw(:all);</p> | 
|  | 27 <p> | 
|  | 28 </p> | 
|  | 29 <h2>DESCRIPTION</h2> | 
|  | 30 <p><strong>HydrogenBondsDescriptors</strong> class provides the following methods:</p> | 
|  | 31 <p> <a href="#new">new</a>, <a href="#generatedescriptors">GenerateDescriptors</a>, <a href="#getdescriptornames">GetDescriptorNames</a>, <a href="#sethydrogenbondstype">SetHydrogenBondsType</a> | 
|  | 32 , <a href="#stringifyhydrogenbondsdescriptors">StringifyHydrogenBondsDescriptors</a> | 
|  | 33 </p><p><strong>HydrogenBondsDescriptors</strong> is derived from <strong>MolecularDescriptors</strong> class which in turn | 
|  | 34 is  derived from <strong>ObjectProperty</strong> base class that provides methods not explicitly defined | 
|  | 35 in <strong>HydrogenBondsDescriptors</strong>, <strong>MolecularDescriptors</strong> or <strong>ObjectProperty</strong> classes using Perl's | 
|  | 36 AUTOLOAD functionality. These methods are generated on-the-fly for a specified object property:</p> | 
|  | 37 <div class="OptionsBox"> | 
|  | 38     Set<PropertyName>(<PropertyValue>); | 
|  | 39 <br/>    $PropertyValue = Get<PropertyName>(); | 
|  | 40 <br/>    Delete<PropertyName>();</div> | 
|  | 41 <p>The current release of MayaChemTools supports identification of two types of hydrogen bond | 
|  | 42 donor and acceptor atoms with these names:</p> | 
|  | 43 <div class="OptionsBox"> | 
|  | 44     HBondsType1 or HydrogenBondsType1 | 
|  | 45 <br/>    HBondsType2 or HydrogenBondsType2</div> | 
|  | 46 <p>The names of these hydrogen bond types are rather arbitrary. However, their definitions have | 
|  | 47 specific meaning and are as follows:</p> | 
|  | 48 <div class="OptionsBox"> | 
|  | 49     HydrogenBondsType1 [ Ref 60-61, Ref 65-66 ]:</div> | 
|  | 50 <div class="OptionsBox"> | 
|  | 51             Donor: NH, NH2, OH - Any N and O with available H | 
|  | 52         Acceptor: N[!H], O - Any N without available H and any O</div> | 
|  | 53 <div class="OptionsBox"> | 
|  | 54     HydrogenBondsType2 [ Ref 91 ]:</div> | 
|  | 55 <div class="OptionsBox"> | 
|  | 56             Donor: NH, NH2, OH - N and O with available H | 
|  | 57         Acceptor: N, O - And N and O</div> | 
|  | 58 <p>By default, <em>HydrogenBondsType2</em> is used to calculate number hydrogen bond donor | 
|  | 59 and acceptor atoms. This corresponds to <strong>RuleOf5</strong> definition of hydrogen bond donors | 
|  | 60 and acceptors.</p> | 
|  | 61 <p> | 
|  | 62 </p> | 
|  | 63 <h2>METHODS</h2> | 
|  | 64 <dl> | 
|  | 65 <dt><strong><a name="new" class="item"><strong>new</strong></a></strong></dt> | 
|  | 66 <dd> | 
|  | 67 <div class="OptionsBox"> | 
|  | 68     $HydrogenBondsDescriptors = new MolecularDescriptors:: | 
|  | 69                                 HydrogenBondsDescriptors(%NamesAndValues);</div> | 
|  | 70 <p>Using specified <em>HydrogenBondsDescriptors</em> property names and values hash, <strong>new</strong> | 
|  | 71 method creates a new object and returns a reference to newly created <strong>HydrogenBondsDescriptors</strong> | 
|  | 72 object. By default, the following properties are initialized:</p> | 
|  | 73 <div class="OptionsBox"> | 
|  | 74     Molecule = '' | 
|  | 75 <br/>    Type = 'HydrogenBonds' | 
|  | 76 <br/>    HydrogenBondsType = 'HBondsType2' | 
|  | 77 <br/>    @DescriptorNames = ('HydrogenBondDonors', 'HydrogenBondAcceptors') | 
|  | 78 <br/>    @DescriptorValues = ('None', 'None')</div> | 
|  | 79 <p>Examples:</p> | 
|  | 80 <div class="OptionsBox"> | 
|  | 81     $HydrogenBondsDescriptors = new MolecularDescriptors:: | 
|  | 82                                 HydrogenBondsDescriptors();</div> | 
|  | 83 <div class="OptionsBox"> | 
|  | 84     $HydrogenBondsDescriptors = new MolecularDescriptors:: | 
|  | 85                                 HydrogenBondsDescriptors( | 
|  | 86                                 'HydrogenBondsType' => 'HBondsType2');</div> | 
|  | 87 <div class="OptionsBox"> | 
|  | 88     $HydrogenBondsDescriptors->SetMolecule($Molecule); | 
|  | 89 <br/>    $HydrogenBondsDescriptors->GenerateDescriptors(); | 
|  | 90 <br/>    print "HydrogenBondsDescriptors: $HydrogenBondsDescriptors\n";</div> | 
|  | 91 </dd> | 
|  | 92 <dt><strong><a name="generatedescriptors" class="item"><strong>GenerateDescriptors</strong></a></strong></dt> | 
|  | 93 <dd> | 
|  | 94 <div class="OptionsBox"> | 
|  | 95     $HydrogenBondsDescriptors->GenerateDescriptors();</div> | 
|  | 96 <p>Calculates number of hydrogen bond donors and acceptors a molecule and returns | 
|  | 97 <em>HydrogenBondsDescriptors</em>.</p> | 
|  | 98 </dd> | 
|  | 99 <dt><strong><a name="getdescriptornames" class="item"><strong>GetDescriptorNames</strong></a></strong></dt> | 
|  | 100 <dd> | 
|  | 101 <div class="OptionsBox"> | 
|  | 102     @DescriptorNames = $HydrogenBondsDescriptors->GetDescriptorNames(); | 
|  | 103 <br/>    @DescriptorNames = MolecularDescriptors::HydrogenBondsDescriptors:: | 
|  | 104                        GetDescriptorNames();</div> | 
|  | 105 <p>Returns all available descriptor names as an array.</p> | 
|  | 106 </dd> | 
|  | 107 <dt><strong><a name="sethydrogenbondstype" class="item"><strong>SetHydrogenBondsType</strong></a></strong></dt> | 
|  | 108 <dd> | 
|  | 109 <div class="OptionsBox"> | 
|  | 110     $HydrogenBondsDescriptors->SetHydrogenBondsType($HBondsType);</div> | 
|  | 111 <p>Sets value of hydrogen bonds type to use during calculation of descriptors and returns | 
|  | 112 <em>HydrogenBondsDescriptors</em>. Possible values: <em>HBondsType1, HydrogenBondsType1, | 
|  | 113 HBondsType2, HydrogenBondsType2</em>.</p> | 
|  | 114 </dd> | 
|  | 115 <dt><strong><a name="stringifyhydrogenbondsdescriptors" class="item"><strong>StringifyHydrogenBondsDescriptors</strong></a></strong></dt> | 
|  | 116 <dd> | 
|  | 117 <div class="OptionsBox"> | 
|  | 118     $String = $HydrogenBondsDescriptors-> | 
|  | 119                               StringifyHydrogenBondsDescriptors();</div> | 
|  | 120 <p>Returns a string containing information about <em>HydrogenBondsDescriptors</em> object.</p> | 
|  | 121 </dd> | 
|  | 122 </dl> | 
|  | 123 <p> | 
|  | 124 </p> | 
|  | 125 <h2>AUTHOR</h2> | 
|  | 126 <p><a href="mailto:msud@san.rr.com">Manish Sud</a></p> | 
|  | 127 <p> | 
|  | 128 </p> | 
|  | 129 <h2>SEE ALSO</h2> | 
|  | 130 <p><a href="./MolecularDescriptors.html">MolecularDescriptors.pm</a>, <a href="./MolecularDescriptorsGenerator.html">MolecularDescriptorsGenerator.pm</a> | 
|  | 131 </p> | 
|  | 132 <p> | 
|  | 133 </p> | 
|  | 134 <h2>COPYRIGHT</h2> | 
|  | 135 <p>Copyright (C) 2015 Manish Sud. All rights reserved.</p> | 
|  | 136 <p>This file is part of MayaChemTools.</p> | 
|  | 137 <p>MayaChemTools is free software; you can redistribute it and/or modify it under | 
|  | 138 the terms of the GNU Lesser General Public License as published by the Free | 
|  | 139 Software Foundation; either version 3 of the License, or (at your option) | 
|  | 140 any later version.</p> | 
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