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NAME

TopologicalPharmacophoreAtomPairsFingerprints.pl - Generate topological pharmacophore atom pairs fingerprints for SD files

SYNOPSIS

TopologicalPharmacophoreAtomPairsFingerprints.pl SDFile(s)...

TopologicalPharmacophoreAtomPairsFingerprints.pl [-a, --AtomTypesToUse ''AtomType1, AtomType2...''] [--AtomTypesWeight ''AtomType1, Weight1, AtomType2, Weight2...''] [--CompoundID DataFieldName or LabelPrefixString] [--CompoundIDLabel text] [--CompoundIDMode] [--DataFields ''FieldLabel1, FieldLabel2,...''] [-d, --DataFieldsMode All | Common | Specify | CompoundID] [-f, --Filter Yes | No] [--FingerprintsLabelMode FingerprintsLabelOnly | FingerprintsLabelWithIDs] [--FingerprintsLabel text] [--FuzzifyAtomPairsCount Yes | No] [--FuzzificationMode FuzzyBinning | FuzzyBinSmoothing] [--FuzzificationMethodology FuzzyBinning | FuzzyBinSmoothing] [--FuzzFactor number] [-h, --help] [-k, --KeepLargestComponent Yes | No] [--MinDistance number] [--MaxDistance number] [-n, --NormalizationMethodology None | ByHeavyAtomsCount | ByAtomTypesCount] [--OutDelim comma | tab | semicolon] [--output SD | text | both] [-o, --overwrite] [-q, --quote Yes | No] [-r, --root RootName] [--ValuesPrecision number] [-v, --VectorStringFormat ValuesString, IDsAndValuesString | IDsAndValuesPairsString | ValuesAndIDsString | ValuesAndIDsPairsString] [-w, --WorkingDir dirname] SDFile(s)...

DESCRIPTION

Generate topological pharmacophore atom pairs fingerprints [ Ref 60-62, Ref 65, Ref 68 ] for SDFile(s) and create appropriate SD or CSV/TSV text file(s) containing fingerprints vector strings corresponding to molecular fingerprints.

Multiple SDFile names are separated by spaces. The valid file extensions are .sdf and .sd. All other file names are ignored. All the SD files in a current directory can be specified either by *.sdf or the current directory name.

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. A pharmacophore atom pairs basis set is initialized for all unique possible pairs within --MinDistance and --MaxDistance range.

Using distance matrix and pharmacohore atom types, occurrence of unique pharmacohore atom pairs is counted. The contribution of each atom type to atom pair interaction is optionally weighted by specified --AtomTypesWeight before assigning its count to appropriate distance bin. Based on --NormalizationMethodology option, pharmacophore atom pairs count is optionally normalized. Additionally, pharmacohore atom pairs count is optionally fuzzified before or after the normalization controlled by values of --FuzzifyAtomPairsCount, --FuzzificationMode, --FuzzificationMethodology and --FuzzFactor options.

The final pharmacophore atom pairs count along with atom pair identifiers involving all non-hydrogen atoms, with optional normalization and fuzzification, constitute pharmacophore topological atom pairs fingerprints of the molecule.

The current release of MayaChemTools generates the following types of topological pharmacophore atom pairs fingerprints vector strings:

OPTIONS

-a, --AtomTypesToUse ''AtomType1,AtomType2,...''

Pharmacophore atom types to use during generation of topological phramacophore atom pairs. It's a list of comma separated valid pharmacophore atom types.

Possible values for pharmacophore atom types are: Ar, CA, H, HBA, HBD, Hal, NI, PI, RA. Default value [ Ref 60-62 ] : HBD,HBA,PI,NI,H.

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

--AtomTypesWeight ''AtomType1,Weight1,AtomType2,Weight2...''

Weights of specified pharmacophore atom types to use during calculation of their contribution to atom pair count. Default value: None. Valid values: real numbers greater than 0. In general it's comma delimited list of valid atom type and its weight.

The weight values allow to increase the importance of specific pharmacophore atom type in the generated fingerprints. A weight value of 0 for an atom type eliminates its contribution to atom pair count where as weight value of 2 doubles its contribution.

--CompoundID DataFieldName or LabelPrefixString

This value is --CompoundIDMode specific and indicates how compound ID is generated.

For DataField value of --CompoundIDMode option, it corresponds to datafield label name whose value is used as compound ID; otherwise, it's a prefix string used for generating compound IDs like LabelPrefixString<Number>. Default value, Cmpd, generates compound IDs which look like Cmpd<Number>.

Examples for DataField value of --CompoundIDMode:

MolID
ExtReg

Examples for LabelPrefix or MolNameOrLabelPrefix value of --CompoundIDMode:

Compound

The value specified above generates compound IDs which correspond to Compound<Number> instead of default value of Cmpd<Number>.

--CompoundIDLabel text

Specify compound ID column label for CSV/TSV text file(s) used during CompoundID value of --DataFieldsMode option. Default value: CompoundID.

--CompoundIDMode DataField | MolName | LabelPrefix | MolNameOrLabelPrefix

Specify how to generate compound IDs and write to CSV/TSV text file(s) along with generated fingerprints for text | both values of --output option: use a SDFile(s) datafield value; use molname line from SDFile(s); generate a sequential ID with specific prefix; use combination of both MolName and LabelPrefix with usage of LabelPrefix values for empty molname lines.

Possible values: DataField | MolName | LabelPrefix | MolNameOrLabelPrefix. Default value: LabelPrefix.

For MolNameAndLabelPrefix value of --CompoundIDMode, molname line in SDFile(s) takes precedence over sequential compound IDs generated using LabelPrefix and only empty molname values are replaced with sequential compound IDs.

This is only used for CompoundID value of --DataFieldsMode option.

--DataFields ''FieldLabel1,FieldLabel2,...''

Comma delimited list of SDFiles(s) data fields to extract and write to CSV/TSV text file(s) along with generated fingerprints for text | both values of --output option.

This is only used for Specify value of --DataFieldsMode option.

Examples:

Extreg
MolID,CompoundName

-d, --DataFieldsMode All | Common | Specify | CompoundID

Specify how data fields in SDFile(s) are transferred to output CSV/TSV text file(s) along with generated fingerprints for text | both values of --output option: transfer all SD data field; transfer SD data files common to all compounds; extract specified data fields; generate a compound ID using molname line, a compound prefix, or a combination of both. Possible values: All | Common | specify | CompoundID. Default value: CompoundID.

-f, --Filter Yes | No

Specify whether to check and filter compound data in SDFile(s). Possible values: Yes or No. Default value: Yes.

By default, compound data is checked before calculating fingerprints and compounds containing atom data corresponding to non-element symbols or no atom data are ignored.

--FingerprintsLabelMode FingerprintsLabelOnly | FingerprintsLabelWithIDs

Specify how fingerprints label is generated in conjunction with --FingerprintsLabel option value: use fingerprints label generated only by --FingerprintsLabel option value or append topological atom pair count value IDs to --FingerprintsLabel option value.

Possible values: FingerprintsLabelOnly | FingerprintsLabelWithIDs. Default value: FingerprintsLabelOnly.

Topological atom pairs IDs appended to --FingerprintsLabel value during FingerprintsLabelWithIDs values of --FingerprintsLabelMode correspond to atom pair count values in fingerprint vector string.

--FingerprintsLabel text

SD data label or text file column label to use for fingerprints string in output SD or CSV/TSV text file(s) specified by --output. Default value: TopologicalPharmacophoreAtomPairsFingerprints.

--FuzzifyAtomPairsCount Yes | No

To fuzzify or not to fuzzify atom pairs count. Possible values: Yes or No. Default value: No.

--FuzzificationMode BeforeNormalization | AfterNormalization

When to fuzzify atom pairs count. Possible values: BeforeNormalization | AfterNormalizationYes. Default value: AfterNormalization.

--FuzzificationMethodology FuzzyBinning | FuzzyBinSmoothing

How to fuzzify atom pairs count. Possible values: FuzzyBinning | FuzzyBinSmoothing. Default value: FuzzyBinning.

In conjunction with values for options --FuzzifyAtomPairsCount, --FuzzificationMode and --FuzzFactor, --FuzzificationMethodology option is used to fuzzify pharmacophore atom pairs count.

Let:

Px = Pharmacophore atom type x
Py = Pharmacophore atom type y
PPxy = Pharmacophore atom pair between atom type Px and Py

PPxyDn = Pharmacophore atom pairs count between atom type Px and Py at distance Dn
PPxyDn-1 = Pharmacophore atom pairs count between atom type Px and Py at distance Dn - 1
PPxyDn+1 = Pharmacophore atom pairs count between atom type Px and Py at distance Dn + 1

FF = FuzzFactor for FuzzyBinning and FuzzyBinSmoothing

Then:

For FuzzyBinning:

PPxyDn = PPxyDn (Unchanged)

PPxyDn-1 = PPxyDn-1 + PPxyDn * FF
PPxyDn+1 = PPxyDn+1 + PPxyDn * FF

For FuzzyBinSmoothing:

PPxyDn = PPxyDn - PPxyDn * 2FF for Dmin < Dn < Dmax
PPxyDn = PPxyDn - PPxyDn * FF for Dn = Dmin or Dmax

PPxyDn-1 = PPxyDn-1 + PPxyDn * FF
PPxyDn+1 = PPxyDn+1 + PPxyDn * FF

In both fuzzification schemes, a value of 0 for FF implies no fuzzification of occurrence counts. A value of 1 during FuzzyBinning corresponds to maximum fuzzification of occurrence counts; however, a value of 1 during FuzzyBinSmoothing ends up completely distributing the value over the previous and next distance bins.

So for default value of --FuzzFactor (FF) 0.15, the occurrence count of pharmacohore atom pairs at distance Dn during FuzzyBinning is left unchanged and the counts at distances Dn -1 and Dn + 1 are incremented by PPxyDn * 0.15.

And during FuzzyBinSmoothing the occurrence counts at Distance Dn is scaled back using multiplicative factor of (1 - 2*0.15) and the occurrence counts at distances Dn -1 and Dn + 1 are incremented by PPxyDn * 0.15. In otherwords, occurrence bin count is smoothed out by distributing it over the previous and next distance value.

--FuzzFactor number

Specify by how much to fuzzify atom pairs count. Default value: 0.15. Valid values: For FuzzyBinning value of --FuzzificationMethodology option: between 0 and 1.0; For FuzzyBinSmoothing value of --FuzzificationMethodology option: between 0 and 0.5.

-h, --help

Print this help message.

-k, --KeepLargestComponent Yes | No

Generate fingerprints for only the largest component in molecule. Possible values: Yes or No. Default value: Yes.

For molecules containing multiple connected components, fingerprints can be generated in two different ways: use all connected components or just the largest connected component. By default, all atoms except for the largest connected component are deleted before generation of fingerprints.

--MinDistance number

Minimum bond distance between atom pairs for generating topological pharmacophore atom pairs. Default value: 1. Valid values: positive integers and less than --MaxDistance.

--MaxDistance number

Maximum bond distance between atom pairs for generating topological pharmacophore atom pairs. Default value: 10. Valid values: positive integers and greater than --MinDistance.

-n, --NormalizationMethodology None | ByHeavyAtomsCount | ByAtomTypesCount

Normalization methodology to use for scaling the occurrence count of pharmacophore atom pairs within specified distance range. Possible values: None, ByHeavyAtomsCount or ByAtomTypesCount. Default value: None.

--OutDelim comma | tab | semicolon

Delimiter for output CSV/TSV text file(s). Possible values: comma, tab, or semicolon Default value: comma.

--output SD | text | both

Type of output files to generate. Possible values: SD, text, or both. Default value: text.

-o, --overwrite

Overwrite existing files.

-q, --quote Yes | No

Put quote around column values in output CSV/TSV text file(s). Possible values: Yes or No. Default value: Yes

-r, --root RootName

New file name is generated using the root: <Root>.<Ext>. Default for new file names: <SDFileName><TopologicalPharmacophoreAtomPairsFP>.<Ext>. The file type determines <Ext> value. The sdf, csv, and tsv <Ext> values are used for SD, comma/semicolon, and tab delimited text files, respectively.This option is ignored for multiple input files.

--ValuesPrecision number

Precision of atom pairs count real values which might be generated after normalization or fuzzification. Default value: up to 2 decimal places. Valid values: positive integers.

-v, --VectorStringFormat ValuesString, IDsAndValuesString | IDsAndValuesPairsString | ValuesAndIDsString | ValuesAndIDsPairsString

Format of fingerprints vector string data in output SD or CSV/TSV text file(s) specified by --output used during PathLengthCount value of -m, --mode option. Possible values: ValuesString, IDsAndValuesString | IDsAndValuesPairsString | ValuesAndIDsString | ValuesAndIDsPairsString. Default value: ValuesString.

Examples:

FingerprintsVector;TopologicalPharmacophoreAtomPairs;150;
OrderedNumericalValues;ValuesString;1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
3 2 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0
0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0...

FingerprintsVector;TopologicalPharmacophoreAtomPairs;150;
OrderedNumericalValues;IDsAndValuesString;H-D1-H H-D1-HBA H-D1-HBD
H-D1-NI H-D1-PI HBA-D1-HBA HBA-D1-HBD HBA-D1-NI HBA-D1-PI HBD-D1-HBD
HBD-D1-NI HBD-D1-PI NI-D1-NI NI-D1-PI PI-D1-PI H-D2-H H-D2-HBA ...;
1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 2 0 0 1 1 0 0 0 0 0 0 0 0 0 1 0
0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 ...

-w, --WorkingDir DirName

Location of working directory. Default value: current directory.

EXAMPLES

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing sequential compound IDs along with fingerprints vector strings data in ValuesString format, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create both SampleTPAPFP.csv and SampleTPAPFP.sdf files containing sequential compound IDs in CSV file along with fingerprints vector strings data in ValuesString format, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing sequential compound IDs along with fingerprints vector strings data in IDsAndValuesPairsString format, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 6 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing sequential compound IDs along with fingerprints vector strings data in ValuesString format, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using ''HBD,HBA,PI,NI'' atom types with double the weighting for ''HBD,HBA'' and normalization by HeavyAtomCount but no fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing sequential compound IDs along with fingerprints vector strings data in ValuesString format, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using ''HBD,HBA,PI,NI,H'' atom types with no weighting of atom types and normalization but with fuzzification of atom pairs count using FuzzyBinning methodology with FuzzFactor value 0.15 and create a SampleTPAPFP.csv file containing sequential compound IDs along with fingerprints vector strings data in ValuesString format, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing compound ID from molecule name line along with fingerprints vector strings data, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing compound IDs using specified data field along with fingerprints vector strings data, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing compound ID using combination of molecule name line and an explicit compound prefix along with fingerprints vector strings data, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing specific data fields columns along with fingerprints vector strings data, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create a SampleTPAPFP.csv file containing common data fields columns along with fingerprints vector strings data, type:

To generate topological pharmacophore atom pairs fingerprints corresponding to distances from 1 through 10 using default atom types with no weighting, normalization, and fuzzification of atom pairs count and create both SampleTPAPFP.csv and SampleTPAPFP.sdf files containing all data fields columns in CSV file along with fingerprints data, type:

AUTHOR

Manish Sud

SEE ALSO

InfoFingerprintsSDFiles.pl, InfoFingerprintsTextFiles.pl,  SimilarityMatrixSDFiles.pl, SimilarityMatrixTextFiles.pl, AtomNeighborhoodsFingerprints.pl,  ExtendedConnectivityFingerprints.pl, MACCSKeysFingerprints.pl, PathLengthFingerprints.pl,  TopologicalAtomPairsFingerprints.pl, TopologicalAtomTorsionsFingerprints.pl,  TopologicalPharmacophoreAtomTripletsFingerprints.pl

COPYRIGHT

Copyright (C) 2004-2010 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.