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diff docs/modules/txt/TopologicalPharmacophoreAtomTripletsFingerprints.txt @ 0:4816e4a8ae95 draft default tip
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| author | deepakjadmin |
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| date | Wed, 20 Jan 2016 09:23:18 -0500 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/docs/modules/txt/TopologicalPharmacophoreAtomTripletsFingerprints.txt Wed Jan 20 09:23:18 2016 -0500 @@ -0,0 +1,312 @@ +NAME + TopologicalPharmacophoreAtomTripletsFingerprints + +SYNOPSIS + use Fingerprints::TopologicalPharmacophoreAtomTripletsFingerprints; + + use Fingerprints::TopologicalPharmacophoreAtomTripletsFingerprints + qw(:all); + +DESCRIPTION + TopologicalPharmacophoreAtomTripletsFingerprints [ Ref 66, Ref 68-71 ] + class provides the following methods: + + new, GenerateFingerprints, , GetDescription, GetAtomTripletIDs, + SetAtomTypesToUse, SetDistanceBinSize, SetMaxDistance, SetMinDistance, + StringifyTopologicalPharmacophoreAtomTripletsFingerprints + + TopologicalPharmacophoreAtomTripletsFingerprints is derived from + Fingerprints class which in turn is derived from ObjectProperty base + class that provides methods not explicitly defined in + TopologicalPharmacophoreAtomTripletsFingerprints, Fingerprints or + ObjectProperty classes using Perl's AUTOLOAD functionality. These + methods are generated on-the-fly for a specified object property: + + Set<PropertyName>(<PropertyValue>); + $PropertyValue = Get<PropertyName>(); + Delete<PropertyName>(); + + Based on the values specified for AtomTypesToUse, pharmacophore atom + types are assigned to all non-hydrogen atoms in a molecule and a + distance matrix is generated. Using MinDistance, MaxDistance, and + DistanceBinSize values, a binned distance matrix is generated with lower + bound on the distance bin as the distance in distance matrix; the lower + bound on the distance bin is also used as the distance between atom + pairs for generation of atom triplet identifiers. + + A pharmacophore atom triplets basis set is generated for all unique atom + triplets constituting atom pairs binned distances between --MinDistance + and --MaxDistance. The value of --UseTriangleInequality determines + whether the triangle inequality test is applied during generation of + atom triplets basis set. The lower distance bound, along with specified + pharmacophore types, is used during generation of atom triplet IDs. + + Let: + + P = Valid pharmacophore atom type + + Px = Pharmacophore atom x + Py = Pharmacophore atom y + Pz = Pharmacophore atom z + + Dmin = Minimum distance corresponding to number of bonds between two atoms + Dmax = Maximum distance corresponding to number of bonds between two atoms + D = Distance corresponding to number of bonds between two atom + + Bsize = Distance bin size + Nbins = Number of distance bins + + Dxy = Distance or lower bound of binned distance between Px and Py + Dxz = Distance or lower bound of binned distance between Px and Pz + Dyz = Distance or lower bound of binned distance between Py and Pz + + Then: + + PxDyz-PyDxz-PzDxy = Pharmacophore atom triplet IDs for atom types Px, + Py, and Pz + + For example: H1-H1-H1, H2-HBA-H2 and so on. + + For default values of Dmin = 1 , Dmax = 10 and Bsize = 2, the number of + distance bins, Nbins = 5, are: + + [1, 2] [3, 4] [5, 6] [7, 8] [9 10] + + and atom triplet basis set size is 2692. + + Atom triplet basis set size for various values of Dmin, Dmax and Bsize in + conjunction with usage of triangle inequality is: + + Dmin Dmax Bsize UseTriangleInequality TripletBasisSetSize + 1 10 2 No 4960 + 1 10 2 Yes 2692 [ Default ] + 2 12 2 No 8436 + 2 12 2 Yes 4494 + + Using binned distance matrix and pharmacohore atom types, occurrence of + unique pharmacohore atom triplets is counted. + + The final pharmacophore atom triples count along with atom pair + identifiers involving all non-hydrogen atoms constitute pharmacophore + topological atom triplets fingerprints of the molecule. + + For *ArbitrarySize* value of AtomTripletsSetSizeToUse, the fingerprint + vector correspond to only those topological pharmacophore atom triplets + which are present and have non-zero count. However, for *FixedSize* + value of AtomTripletsSetSizeToUse, the fingerprint vector contains all + possible valid topological pharmacophore atom triplets with both zero + and non-zero count values. + + The current release of MayaChemTools generates the following types of + topological pharmacophore atom triplets fingerprints vector strings: + + FingerprintsVector;TopologicalPharmacophoreAtomTriplets:ArbitrarySize: + MinDistance1:MaxDistance10;696;NumericalValues;IDsAndValuesString;Ar1- + Ar1-Ar1 Ar1-Ar1-H1 Ar1-Ar1-HBA1 Ar1-Ar1-HBD1 Ar1-H1-H1 Ar1-H1-HBA1 Ar1 + -H1-HBD1 Ar1-HBA1-HBD1 H1-H1-H1 H1-H1-HBA1 H1-H1-HBD1 H1-HBA1-HBA1 H1- + HBA1-HBD1 H1-HBA1-NI1 H1-HBD1-NI1 HBA1-HBA1-NI1 HBA1-HBD1-NI1 Ar1-...; + 46 106 8 3 83 11 4 1 21 5 3 1 2 2 1 1 1 100 101 18 11 145 132 26 14 23 + 28 3 3 5 4 61 45 10 4 16 20 7 5 1 3 4 5 3 1 1 1 1 5 4 2 1 2 2 2 1 1 1 + 119 123 24 15 185 202 41 25 22 17 3 5 85 95 18 11 23 17 3 1 1 6 4 ... + + FingerprintsVector;TopologicalPharmacophoreAtomTriplets:FixedSize:MinD + istance1:MaxDistance10;2692;OrderedNumericalValues;ValuesString;46 106 + 8 3 0 0 83 11 4 0 0 0 1 0 0 0 0 0 0 0 0 21 5 3 0 0 1 2 2 0 0 1 0 0 0 + 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 101 18 11 0 0 145 132 26 + 14 0 0 23 28 3 3 0 0 5 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 61 45 10 4 0 + 0 16 20 7 5 1 0 3 4 5 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 5 ... + + FingerprintsVector;TopologicalPharmacophoreAtomTriplets:FixedSize:MinD + istance1:MaxDistance10;2692;OrderedNumericalValues;IDsAndValuesString; + Ar1-Ar1-Ar1 Ar1-Ar1-H1 Ar1-Ar1-HBA1 Ar1-Ar1-HBD1 Ar1-Ar1-NI1 Ar1-Ar1-P + I1 Ar1-H1-H1 Ar1-H1-HBA1 Ar1-H1-HBD1 Ar1-H1-NI1 Ar1-H1-PI1 Ar1-HBA1-HB + A1 Ar1-HBA1-HBD1 Ar1-HBA1-NI1 Ar1-HBA1-PI1 Ar1-HBD1-HBD1 Ar1-HBD1-...; + 46 106 8 3 0 0 83 11 4 0 0 0 1 0 0 0 0 0 0 0 0 21 5 3 0 0 1 2 2 0 0 1 + 0 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 100 101 18 11 0 0 145 + 132 26 14 0 0 23 28 3 3 0 0 5 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 61 ... + + METHODS + new + $TPATFP = new TopologicalPharmacophoreAtomTripletsFingerprints( + %NamesAndValues); + + Using specified *TopologicalPharmacophoreAtomTripletsFingerprints* + property names and values hash, new method creates a new object and + returns a reference to newly created + TopologicalPharmacophoreAtomTripletsFingerprints object. By default, + the following properties are initialized: + + Molecule = '' + Type = 'TopologicalPharmacophoreAtomTriplets' + MinDistance = 1 + MaxDistance = 10 + DistanceBinSize = 2 + UseTriangleInequality = 1 + AtomTypesToUse = ['HBD', 'HBA', 'PI', 'NI', 'H', 'Ar'] + + Examples: + + $TPATFP = new TopologicalPharmacophoreAtomTripletsFingerprints( + 'Molecule' => $Molecule); + + $TPATFP = new TopologicalPharmacophoreAtomTripletsFingerprints( + 'Molecule' => $Molecule, + 'AtomTripletsSetSizeToUse' => 'ArbitrarySize'; + 'MinDistance' => 1, + 'MaxDistance' => 10, + 'DistanceBinSize' => 2, + 'AtomTypesToUse' => ['HBD', 'HBA', 'PI', 'NI', 'H', 'Ar'], + 'UseTriangleInequality' => 1); + + $TPATFP = new TopologicalPharmacophoreAtomTripletsFingerprints( + 'Molecule' => $Molecule, + 'AtomTripletsSetSizeToUse' => 'FixedSize'; + 'MinDistance' => 1, + 'MaxDistance' => 10, + 'DistanceBinSize' => 2, + 'AtomTypesToUse' => ['HBD', 'HBA', 'PI', 'NI', 'H', 'Ar'], + 'UseTriangleInequality' => 1); + + $TPATFP->GenerateFingerprints(); + print "$TPATFP\n"; + + GetDescription + $Description = $TopologicalPharmacophoreAtomTripletsFP->GetDescription(); + + Returns a string containing description of topological pharmacophore + atom triplets fingerprints. + + GenerateFingerprints + $TopologicalPharmacophoreAtomTripletsFP->GenerateFingerprints(); + + Generates topological pharmacophore atom triplets fingerprints and + returns *TopologicalPharmacophoreAtomTripletsFP*. + + GetAtomTripletIDs + $AtomTripletsIDsRef = $TopologicalPharmacophoreATFP->GetAtomTripletIDs(); + @AtomTripletIDs = $TopologicalPharmacophoreATFP->GetAtomTripletIDs(); + + Returns atom triplet IDs corresponding to atom pairs count values in + topological pharmacophore atom triplet fingerprints vector as an + array or reference to an array. + + AtomTripletsSetSizeToUse + $TPAFP->AtomTripletsSetSizeToUse($Values); + + Sets pharmacophore atom triplets set size to use for topological + pharmacophore fingerprints generation and returns + *TopologicalPharmacophoreAtomTripletsFingerprints*. + + Possible values for pharmacophore atom triplets set size are: + *ArbitrarySize, FizedSize*. Default value: *ArbitrarySize*. + + For *ArbitrarySize* value of AtomTripletsSetSizeToUse, the + fingerprint vector correspond to only those topological + pharmacophore atom triplets which are present and have non-zero + count. However, for *FixedSize* value of AtomTripletsSetSizeToUse, + the fingerprint vector contains all possible valid topological + pharmacophore atom triplets with both zero and non-zero count + values. + + SetAtomTypesToUse + $TopologicalPharmacophoreAtomTripletsFP->SetAtomTypesToUse($ValuesRef); + $TopologicalPharmacophoreAtomTripletsFP->SetAtomTypesToUse(@Values); + + Sets pharmacophore atom types to use for topological pharmacophore + fingerprints generation and returns + *TopologicalPharmacophoreAtomTripletsFingerprints*. + + Possible values for pharmacophore atom types are: *Ar, CA, H, HBA, + HBD, Hal, NI, PI, RA*. Default value [ Ref 71 ] : + *HBD,HBA,PI,NI,H,Ar*. + + The pharmacophore atom types abbreviations correspond to: + + HBD: HydrogenBondDonor + HBA: HydrogenBondAcceptor + PI : PositivelyIonizable + NI : NegativelyIonizable + Ar : Aromatic + Hal : Halogen + H : Hydrophobic + RA : RingAtom + CA : ChainAtom + + *AtomTypes::FunctionalClassAtomTypes* module is used to assign + pharmacophore atom types. It uses following definitions [ Ref 60-61, + Ref 65-66 ]: + + HydrogenBondDonor: NH, NH2, OH + HydrogenBondAcceptor: N[!H], O + PositivelyIonizable: +, NH2 + NegativelyIonizable: -, C(=O)OH, S(=O)OH, P(=O)OH + + SetDistanceBinSize + $TopologicalPharmacophoreAtomTripletsFP->SetDistanceBinSize($Value); + + Sets distance bin size used to bin distances between atom pairs in + atom triplets and returns *TopologicalPharmacophoreAtomTriplesFP*. + + For default MinDistance and MaxDistance values of 1 and 10 with + DistanceBinSize of 2 [ Ref 70 ], the following 5 distance bins are + generated: + + [1, 2] [3, 4] [5, 6] [7, 8] [9 10] + + The lower distance bound on the distance bin is uses to bin the + distance between atom pairs in atom triplets. So in the previous + example, atom pairs with distances 1 and 2 fall in first distance + bin, atom pairs with distances 3 and 4 fall in second distance bin + and so on. + + In order to distribute distance bins of equal size, the last bin is + allowed to go past MaxDistance by up to distance bin size. For + example, MinDistance and MaxDistance values of 2 and 10 with + DistanceBinSize of 2 generates the following 6 distance bins: + + [2, 3] [4, 5] [6, 7] [8, 9] [10 11] + + SetMaxDistance + $TopologicalPharmacophoreAtomTriplesFP->SetMaxDistance($Value); + + Sets maximum bond distance between atom pairs corresponding to atom + triplets for generating topological pharmacophore atom triplets + fingerprints and returns *TopologicalPharmacophoreAtomTriplesFP*. + + SetMinDistance + $TopologicalPharmacophoreAtomTriplesFP->SetMinDistance($Value); + + Sets minimum bond distance between atom pairs corresponding to atom + triplets for generating topological pharmacophore atom triplets + fingerprints and returns *TopologicalPharmacophoreAtomTriplesFP*. + + StringifyTopologicalPharmacophoreAtomTripletsFingerprints + $String = $TopologicalPharmacophoreAtomTripletsFingerprints-> + StringifyTopologicalPharmacophoreAtomTripletsFingerprints(); + + Returns a string containing information about + *TopologicalPharmacophoreAtomTripletsFingerprints* object. + +AUTHOR + Manish Sud <msud@san.rr.com> + +SEE ALSO + Fingerprints.pm, FingerprintsStringUtil.pm, + AtomNeighborhoodsFingerprints.pm, AtomTypesFingerprints.pm, + EStateIndiciesFingerprints.pm, ExtendedConnectivityFingerprints.pm, + MACCSKeys.pm, PathLengthFingerprints.pm, + TopologicalAtomPairsFingerprints.pm, + TopologicalAtomTripletsFingerprints.pm, + TopologicalAtomTorsionsFingerprints.pm, + TopologicalPharmacophoreAtomPairsFingerprints.pm, + +COPYRIGHT + Copyright (C) 2015 Manish Sud. All rights reserved. + + This file is part of MayaChemTools. + + MayaChemTools is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 3 of the License, or (at + your option) any later version. +
