diff mayachemtools/docs/modules/man3/AtomNeighborhoodsFingerprints.3 @ 0:73ae111cf86f draft

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author deepakjadmin
date Wed, 20 Jan 2016 11:55:01 -0500
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+.\" ========================================================================
+.\"
+.IX Title "ATOMNEIGHBORHOODSFINGERPRINTS 1"
+.TH ATOMNEIGHBORHOODSFINGERPRINTS 1 "2015-03-29" "perl v5.14.2" "MayaChemTools"
+.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH "NAME"
+AtomNeighborhoodsFingerprints
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+use Fingerprints::AtomNeighborhoodsFingerprints;
+.PP
+use Fingerprints::AtomNeighborhoodsFingerprints qw(:all);
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+\&\fBAtomNeighborhoodsFingerprints\fR [ Ref 53\-56, Ref 73 ] class provides the following methods:
+.PP
+new, GenerateFingerprints, GetDescription, SetAtomIdentifierType,
+SetAtomicInvariantsToUse, SetFunctionalClassesToUse, SetMaxNeighborhoodRadius,
+SetMinNeighborhoodRadius, StringifyAtomNeighborhoodsFingerprints
+.PP
+\&\fBAtomNeighborhoodsFingerprints\fR is derived from \fBFingerprints\fR class which in turn
+is  derived from \fBObjectProperty\fR base class that provides methods not explicitly defined
+in \fBAtomNeighborhoodsFingerprints\fR, \fBFingerprints\fR or \fBObjectProperty\fR classes using Perl's
+\&\s-1AUTOLOAD\s0 functionality. These methods are generated on-the-fly for a specified object property:
+.PP
+.Vb 3
+\&    Set<PropertyName>(<PropertyValue>);
+\&    $PropertyValue = Get<PropertyName>();
+\&    Delete<PropertyName>();
+.Ve
+.PP
+The current release of MayaChemTools supports generation of \fBAtomNeighborhoodsFingerprints\fR
+corresponding to following \fBAtomIdentifierTypes\fR:
+.PP
+.Vb 3
+\&    AtomicInvariantsAtomTypes, DREIDINGAtomTypes, EStateAtomTypes,
+\&    FunctionalClassAtomTypes, MMFF94AtomTypes, SLogPAtomTypes,
+\&    SYBYLAtomTypes, TPSAAtomTypes, UFFAtomTypes
+.Ve
+.PP
+Based on the values specified for \fBAtomIdentifierType\fR along with other specified
+sucb as \fBAtomicInvariantsToUse\fR and \fBFunctionalClassesToUse\fR, initial atom types are
+assigned to all non-hydrogen atoms in a molecule. Using atom neighborhoods
+around each non-hydrogen central atom corresponding to radii between specified values
+\&\fBMinNeighborhoodRadius\fR and \fBMaxNeighborhoodRadius\fR, unique atom types at each radii
+level are counted and an atom neighborhood identifier is generated.
+.PP
+The format of an atom neighborhood identifier around a central non-hydrogen atom at a
+specific radius is:
+.PP
+.Vb 1
+\&    NR<n>\-<AtomType>\-ATC<n>
+\&
+\&    NR: Neighborhood radius
+\&    AtomType: Assigned atom type
+\&    ATC: Atom type count
+.Ve
+.PP
+The atom neighborhood identifier for non-hydrogen central atom corresponding to all specified radii
+is generated by concatenating neighborhood identifiers at each radii by colon as a delimiter:
+.PP
+.Vb 1
+\&    NR<n>\-<AtomType>\-ATC<n>:NR<n>\-<AtomType>\-ATC<n>:...
+.Ve
+.PP
+The atom neighborhood identifiers for all non-hydrogen central atoms at all specified radii are
+concatenated using space as a delimiter and constitute atom neighborhood fingerprint of the molecule.
+.PP
+The current release of MayaChemTools generates the following types of atom neighborhoods
+fingerprints vector strings:
+.PP
+.Vb 6
+\&    FingerprintsVector;AtomNeighborhoods:AtomicInvariantsAtomTypes:MinRadi
+\&    us0:MaxRadius2;41;AlphaNumericalValues;ValuesString;NR0\-C.X1.BO1.H3\-AT
+\&    C1:NR1\-C.X3.BO3.H1\-ATC1:NR2\-C.X1.BO1.H3\-ATC1:NR2\-C.X3.BO4\-ATC1 NR0\-C.X
+\&    1.BO1.H3\-ATC1:NR1\-C.X3.BO3.H1\-ATC1:NR2\-C.X1.BO1.H3\-ATC1:NR2\-C.X3.BO4\-A
+\&    TC1 NR0\-C.X2.BO2.H2\-ATC1:NR1\-C.X2.BO2.H2\-ATC1:NR1\-C.X3.BO3.H1\-ATC1:NR2
+\&    \-C.X2.BO2.H2\-ATC1:NR2\-N.X3.BO3\-ATC1:NR2\-O.X1.BO1.H1\-ATC1 NR0\-C.X2.B...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:DREIDINGAtomTypes:MinRadius0:MaxR
+\&    adius2;41;AlphaNumericalValues;ValuesString;NR0\-C_2\-ATC1:NR1\-C_3\-ATC1:
+\&    NR1\-O_2\-ATC1:NR1\-O_3\-ATC1:NR2\-C_3\-ATC1 NR0\-C_2\-ATC1:NR1\-C_R\-ATC1:NR1\-N
+\&    _3\-ATC1:NR1\-O_2\-ATC1:NR2\-C_R\-ATC3 NR0\-C_3\-ATC1:NR1\-C_2\-ATC1:NR1\-C_3\-AT
+\&    C1:NR2\-C_3\-ATC1:NR2\-O_2\-ATC1:NR2\-O_3\-ATC2 NR0\-C_3\-ATC1:NR1\-C_3\-ATC1:NR
+\&    1\-N_R\-ATC1:NR2\-C_3\-ATC1:NR2\-C_R\-ATC2 NR0\-C_3\-ATC1:NR1\-C_3\-ATC1:NR2\-...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:EStateAtomTypes:MinRadius0:MaxRad
+\&    ius2;41;AlphaNumericalValues;ValuesString;NR0\-aaCH\-ATC1:NR1\-aaCH\-ATC1:
+\&    NR1\-aasC\-ATC1:NR2\-aaCH\-ATC1:NR2\-aasC\-ATC1:NR2\-sF\-ATC1 NR0\-aaCH\-ATC1:NR
+\&    1\-aaCH\-ATC1:NR1\-aasC\-ATC1:NR2\-aaCH\-ATC1:NR2\-aasC\-ATC1:NR2\-sF\-ATC1 NR0\-
+\&    aaCH\-ATC1:NR1\-aaCH\-ATC1:NR1\-aasC\-ATC1:NR2\-aaCH\-ATC1:NR2\-aasC\-ATC2 NR0\-
+\&    aaCH\-ATC1:NR1\-aaCH\-ATC1:NR1\-aasC\-ATC1:NR2\-aaCH\-ATC1:NR2\-aasC\-ATC2 N...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:FunctionalClassAtomTypes:MinRadiu
+\&    s0:MaxRadius2;41;AlphaNumericalValues;ValuesString;NR0\-Ar\-ATC1:NR1\-Ar\-
+\&    ATC1:NR1\-Ar.HBA\-ATC1:NR1\-None\-ATC1:NR2\-Ar\-ATC2:NR2\-None\-ATC4 NR0\-Ar\-AT
+\&    C1:NR1\-Ar\-ATC2:NR1\-Ar.HBA\-ATC1:NR2\-Ar\-ATC5:NR2\-None\-ATC1 NR0\-Ar\-ATC1:N
+\&    R1\-Ar\-ATC2:NR1\-HBD\-ATC1:NR2\-Ar\-ATC2:NR2\-None\-ATC1 NR0\-Ar\-ATC1:NR1\-Ar\-A
+\&    TC2:NR1\-Hal\-ATC1:NR2\-Ar\-ATC2 NR0\-Ar\-ATC1:NR1\-Ar\-ATC2:NR1\-None\-ATC1:...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:MMFF94AtomTypes:MinRadius0:MaxRad
+\&    ius2;41;AlphaNumericalValues;ValuesString;NR0\-C5A\-ATC1:NR1\-C5B\-ATC1:NR
+\&    1\-CB\-ATC1:NR1\-N5\-ATC1:NR2\-C5A\-ATC1:NR2\-C5B\-ATC1:NR2\-CB\-ATC3:NR2\-CR\-ATC
+\&    1 NR0\-C5A\-ATC1:NR1\-C5B\-ATC1:NR1\-CR\-ATC1:NR1\-N5\-ATC1:NR2\-C5A\-ATC1:NR2\-C
+\&    5B\-ATC1:NR2\-C=ON\-ATC1:NR2\-CR\-ATC3 NR0\-C5B\-ATC1:NR1\-C5A\-ATC1:NR1\-C5B\-AT
+\&    C1:NR1\-C=ON\-ATC1:NR2\-C5A\-ATC1:NR2\-CB\-ATC1:NR2\-CR\-ATC1:NR2\-N5\-ATC1:N...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:SLogPAtomTypes:MinRadius0:MaxRadi
+\&    us2;41;AlphaNumericalValues;ValuesString;NR0\-C1\-ATC1:NR1\-C10\-ATC1:NR1\-
+\&    CS\-ATC1:NR2\-C1\-ATC1:NR2\-N11\-ATC1:NR2\-O2\-ATC1 NR0\-C1\-ATC1:NR1\-C11\-ATC1:
+\&    NR2\-C1\-ATC1:NR2\-C21\-ATC1 NR0\-C1\-ATC1:NR1\-C11\-ATC1:NR2\-C1\-ATC1:NR2\-C21\-
+\&    ATC1 NR0\-C1\-ATC1:NR1\-C5\-ATC1:NR1\-CS\-ATC1:NR2\-C1\-ATC1:NR2\-O2\-ATC2:NR2\-O
+\&    9\-ATC1 NR0\-C1\-ATC1:NR1\-CS\-ATC2:NR2\-C1\-ATC2:NR2\-O2\-ATC2 NR0\-C10\-ATC1...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:SYBYLAtomTypes:MinRadius0:MaxRadi
+\&    us2;41;AlphaNumericalValues;ValuesString;NR0\-C.2\-ATC1:NR1\-C.3\-ATC1:NR1
+\&    \-O.co2\-ATC2:NR2\-C.3\-ATC1 NR0\-C.2\-ATC1:NR1\-C.ar\-ATC1:NR1\-N.am\-ATC1:NR1\-
+\&    O.2\-ATC1:NR2\-C.ar\-ATC3 NR0\-C.3\-ATC1:NR1\-C.2\-ATC1:NR1\-C.3\-ATC1:NR2\-C.3\-
+\&    ATC1:NR2\-O.3\-ATC1:NR2\-O.co2\-ATC2 NR0\-C.3\-ATC1:NR1\-C.3\-ATC1:NR1\-N.ar\-AT
+\&    C1:NR2\-C.3\-ATC1:NR2\-C.ar\-ATC2 NR0\-C.3\-ATC1:NR1\-C.3\-ATC1:NR2\-C.3\-ATC...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:TPSAAtomTypes:MinRadius0:MaxRadiu
+\&    s2;41;AlphaNumericalValues;ValuesString;NR0\-N21\-ATC1:NR1\-None\-ATC3:NR2
+\&    \-None\-ATC5 NR0\-N7\-ATC1:NR1\-None\-ATC2:NR2\-None\-ATC3:NR2\-O3\-ATC1 NR0\-Non
+\&    e\-ATC1:NR1\-N21\-ATC1:NR1\-None\-ATC1:NR2\-None\-ATC3 NR0\-None\-ATC1:NR1\-N21\-
+\&    ATC1:NR1\-None\-ATC2:NR2\-None\-ATC6 NR0\-None\-ATC1:NR1\-N21\-ATC1:NR1\-None\-A
+\&    TC2:NR2\-None\-ATC6 NR0\-None\-ATC1:NR1\-N7\-ATC1:NR1\-None\-ATC1:NR1\-O3\-AT...
+\&
+\&    FingerprintsVector;AtomNeighborhoods:UFFAtomTypes:MinRadius0:MaxRadius
+\&    2;41;AlphaNumericalValues;ValuesString;NR0\-C_2\-ATC1:NR1\-C_3\-ATC1:NR1\-O
+\&    _2\-ATC1:NR1\-O_3\-ATC1:NR2\-C_3\-ATC1 NR0\-C_2\-ATC1:NR1\-C_R\-ATC1:NR1\-N_3\-AT
+\&    C1:NR1\-O_2\-ATC1:NR2\-C_R\-ATC3 NR0\-C_3\-ATC1:NR1\-C_2\-ATC1:NR1\-C_3\-ATC1:NR
+\&    2\-C_3\-ATC1:NR2\-O_2\-ATC1:NR2\-O_3\-ATC2 NR0\-C_3\-ATC1:NR1\-C_3\-ATC1:NR1\-N_R
+\&    \-ATC1:NR2\-C_3\-ATC1:NR2\-C_R\-ATC2 NR0\-C_3\-ATC1:NR1\-C_3\-ATC1:NR2\-C_3\-A...
+.Ve
+.SS "\s-1METHODS\s0"
+.IX Subsection "METHODS"
+.IP "\fBnew\fR" 4
+.IX Item "new"
+.Vb 2
+\&    $NewAtomNeighborhoodsFingerprints = new AtomNeighborhoodsFingerprints(
+\&                                                   %NamesAndValues);
+.Ve
+.Sp
+Using specified \fIAtomNeighborhoodsFingerprints\fR property names and values hash, \fBnew\fR
+method creates a new object and returns a reference to newly created \fBAtomNeighborhoodsFingerprints\fR
+object. By default, the following properties are initialized:
+.Sp
+.Vb 7
+\&    Molecule = \*(Aq\*(Aq
+\&    Type = \*(AqAtomNeighborhoods\*(Aq
+\&    MinNeighborhoodRadius = 0
+\&    MaxNeighborhoodRadius = 2
+\&    AtomIdentifierType = \*(Aq\*(Aq
+\&    AtomicInvariantsToUse = [\*(AqAS\*(Aq, \*(AqX\*(Aq, \*(AqBO\*(Aq, \*(AqH\*(Aq, \*(AqFC\*(Aq, \*(AqMN\*(Aq]
+\&    FunctionalClassesToUse = [\*(AqHBD\*(Aq, \*(AqHBA\*(Aq, \*(AqPI\*(Aq, \*(AqNI\*(Aq, \*(AqAr\*(Aq, \*(AqHal\*(Aq]
+.Ve
+.Sp
+Examples:
+.Sp
+.Vb 4
+\&    $AtomNeighborhoodsFingerprints = new AtomNeighborhoodsFingerprints(
+\&                              \*(AqMolecule\*(Aq => $Molecule,
+\&                              \*(AqAtomIdentifierType\*(Aq =>
+\&                                              "AtomicInvariantsAtomTypes");
+\&
+\&    $AtomNeighborhoodsFingerprints = new AtomNeighborhoodsFingerprints(
+\&                              \*(AqMolecule\*(Aq => $Molecule,
+\&                              \*(AqMinNeighborhoodRadius\*(Aq => 0,
+\&                              \*(AqMaxNeighborhoodRadius\*(Aq => 2,
+\&                              \*(AqAtomIdentifierType\*(Aq =>
+\&                                              \*(AqAtomicInvariantsAtomTypes\*(Aq,
+\&                              \*(AqAtomicInvariantsToUse\*(Aq =>
+\&                                              [\*(AqAS\*(Aq, \*(AqX\*(Aq, \*(AqBO\*(Aq, \*(AqH\*(Aq, \*(AqFC\*(Aq] );
+\&
+\&    $AtomNeighborhoodsFingerprints = new AtomNeighborhoodsFingerprints(
+\&                              \*(AqMolecule\*(Aq => $Molecule,
+\&                              \*(AqAtomIdentifierType\*(Aq =>
+\&                                              \*(AqSYBYLAtomTypes\*(Aq);
+\&
+\&    $AtomNeighborhoodsFingerprints = new AtomNeighborhoodsFingerprints(
+\&                              \*(AqMolecule\*(Aq => $Molecule,
+\&                              \*(AqAtomIdentifierType\*(Aq =>
+\&                                              \*(AqMMFF94AtomTypes\*(Aq);
+\&
+\&    $AtomNeighborhoodsFingerprints = new AtomNeighborhoodsFingerprints(
+\&                              \*(AqMolecule\*(Aq => $Molecule,
+\&                              \*(AqAtomIdentifierType\*(Aq =>
+\&                                              \*(AqAtomicInvariantsAtomTypes\*(Aq);
+\&
+\&    $AtomNeighborhoodsFingerprints = new AtomNeighborhoodsFingerprints(
+\&                              \*(AqMolecule\*(Aq => $Molecule,
+\&                              \*(AqMinNeighborhoodRadius\*(Aq => 0,
+\&                              \*(AqMaxNeighborhoodRadius\*(Aq => 2,
+\&                              \*(AqAtomIdentifierType\*(Aq =>
+\&                                              \*(AqFunctionalClassAtomTypes\*(Aq,
+\&                              \*(AqFunctionalClassesToUse\*(Aq =>
+\&                                          [\*(AqHBD\*(Aq, \*(AqHBA\*(Aq, \*(AqPI\*(Aq, \*(AqNI\*(Aq, \*(AqAr\*(Aq, \*(AqHal\*(Aq] );
+\&
+\&    $AtomNeighborhoodsFingerprints\->GenerateFingerprints();
+\&    print "$AtomNeighborhoodsFingerprints\en";
+.Ve
+.IP "\fBGenerateFingerprints\fR" 4
+.IX Item "GenerateFingerprints"
+.Vb 1
+\&    $AtomNeighborhoodsFingerprints\->GenerateFingerprints();
+.Ve
+.Sp
+Generates atom neighborhood fingerprints and returns \fIAtomNeighborhoodsFingerprints\fR.
+.IP "\fBGetDescription\fR" 4
+.IX Item "GetDescription"
+.Vb 1
+\&    $Description = $AtomNeighborhoodsFingerprints\->GetDescription();
+.Ve
+.Sp
+Returns a string containing description of atom neighborhood fingerprints.
+.IP "\fBSetAtomIdentifierType\fR" 4
+.IX Item "SetAtomIdentifierType"
+.Vb 1
+\&    $AtomNeighborhoodsFingerprints\->SetAtomIdentifierType($IdentifierType);
+.Ve
+.Sp
+Sets atom \fIIdentifierType\fR to use during atom neighborhood fingerprints generation and
+returns \fIAtomNeighborhoodsFingerprints\fR.
+.Sp
+Possible values: \fIAtomicInvariantsAtomTypes, DREIDINGAtomTypes, EStateAtomTypes,
+FunctionalClassAtomTypes, MMFF94AtomTypes, SLogPAtomTypes, SYBYLAtomTypes,
+TPSAAtomTypes, UFFAtomTypes\fR.
+.IP "\fBSetAtomicInvariantsToUse\fR" 4
+.IX Item "SetAtomicInvariantsToUse"
+.Vb 2
+\&    $AtomNeighborhoodsFingerprints\->SetAtomicInvariantsToUse($ValuesRef);
+\&    $AtomNeighborhoodsFingerprints\->SetAtomicInvariantsToUse(@Values);
+.Ve
+.Sp
+Sets atomic invariants to use during \fIAtomicInvariantsAtomTypes\fR value of \fIAtomIdentifierType\fR
+for atom neighborhood fingerprints generation and returns \fIAtomNeighborhoodsFingerprints\fR.
+.Sp
+Possible values for atomic invariants are: \fI\s-1AS\s0, X, \s-1BO\s0,  \s-1LBO\s0, \s-1SB\s0, \s-1DB\s0, \s-1TB\s0,
+H, Ar, \s-1RA\s0, \s-1FC\s0, \s-1MN\s0, \s-1SM\s0\fR. Default value: \fI\s-1AS\s0,X,BO,H,FC\fR.
+.Sp
+The atomic invariants abbreviations correspond to:
+.Sp
+.Vb 1
+\&    AS = Atom symbol corresponding to element symbol
+\&
+\&    X<n>   = Number of non\-hydrogen atom neighbors or heavy atoms
+\&    BO<n> = Sum of bond orders to non\-hydrogen atom neighbors or heavy atoms
+\&    LBO<n> = Largest bond order of non\-hydrogen atom neighbors or heavy atoms
+\&    SB<n> = Number of single bonds to non\-hydrogen atom neighbors or heavy atoms
+\&    DB<n> = Number of double bonds to non\-hydrogen atom neighbors or heavy atoms
+\&    TB<n> = Number of triple bonds to non\-hydrogen atom neighbors or heavy atoms
+\&    H<n>   = Number of implicit and explicit hydrogens for atom
+\&    Ar     = Aromatic annotation indicating whether atom is aromatic
+\&    RA     = Ring atom annotation indicating whether atom is a ring
+\&    FC<+n/\-n> = Formal charge assigned to atom
+\&    MN<n> = Mass number indicating isotope other than most abundant isotope
+\&    SM<n> = Spin multiplicity of atom. Possible values: 1 (singlet), 2 (doublet) or
+\&            3 (triplet)
+.Ve
+.Sp
+Atom type generated by AtomTypes::AtomicInvariantsAtomTypes class corresponds to:
+.Sp
+.Vb 1
+\&    AS.X<n>.BO<n>.LBO<n>.<SB><n>.<DB><n>.<TB><n>.H<n>.Ar.RA.FC<+n/\-n>.MN<n>.SM<n>
+.Ve
+.Sp
+Except for \s-1AS\s0 which is a required atomic invariant in atom types, all other atomic invariants are
+optional. Atom type specification doesn't include atomic invariants with zero or undefined values.
+.Sp
+In addition to usage of abbreviations for specifying atomic invariants, the following descriptive words
+are also allowed:
+.Sp
+.Vb 12
+\&    X : NumOfNonHydrogenAtomNeighbors or NumOfHeavyAtomNeighbors
+\&    BO : SumOfBondOrdersToNonHydrogenAtoms or SumOfBondOrdersToHeavyAtoms
+\&    LBO : LargestBondOrderToNonHydrogenAtoms or LargestBondOrderToHeavyAtoms
+\&    SB :  NumOfSingleBondsToNonHydrogenAtoms or NumOfSingleBondsToHeavyAtoms
+\&    DB : NumOfDoubleBondsToNonHydrogenAtoms or NumOfDoubleBondsToHeavyAtoms
+\&    TB : NumOfTripleBondsToNonHydrogenAtoms or NumOfTripleBondsToHeavyAtoms
+\&    H :  NumOfImplicitAndExplicitHydrogens
+\&    Ar : Aromatic
+\&    RA : RingAtom
+\&    FC : FormalCharge
+\&    MN : MassNumber
+\&    SM : SpinMultiplicity
+.Ve
+.Sp
+\&\fIAtomTypes::AtomicInvariantsAtomTypes\fR module is used to assign atomic invariant
+atom types.
+.IP "\fBSetFunctionalClassesToUse\fR" 4
+.IX Item "SetFunctionalClassesToUse"
+.Vb 2
+\&    $AtomNeighborhoodsFingerprints\->SetFunctionalClassesToUse($ValuesRef);
+\&    $AtomNeighborhoodsFingerprints\->SetFunctionalClassesToUse(@Values);
+.Ve
+.Sp
+Sets functional classes invariants to use during \fIFunctionalClassAtomTypes\fR value of \fIAtomIdentifierType\fR
+for atom neighborhoods fingerprints generation and returns \fIAtomNeighborhoodsFingerprints\fR.
+.Sp
+Possible values for atom functional classes are: \fIAr, \s-1CA\s0, H, \s-1HBA\s0, \s-1HBD\s0, Hal, \s-1NI\s0, \s-1PI\s0, \s-1RA\s0\fR.
+Default value [ Ref 24 ]: \fI\s-1HBD\s0,HBA,PI,NI,Ar,Hal\fR.
+.Sp
+The functional class abbreviations correspond to:
+.Sp
+.Vb 9
+\&    HBD: HydrogenBondDonor
+\&    HBA: HydrogenBondAcceptor
+\&    PI :  PositivelyIonizable
+\&    NI : NegativelyIonizable
+\&    Ar : Aromatic
+\&    Hal : Halogen
+\&    H : Hydrophobic
+\&    RA : RingAtom
+\&    CA : ChainAtom
+\&
+\& Functional class atom type specification for an atom corresponds to:
+\&
+\&    Ar.CA.H.HBA.HBD.Hal.NI.PI.RA or None
+.Ve
+.Sp
+\&\fIAtomTypes::FunctionalClassAtomTypes\fR module is used to assign functional class atom
+types. It uses following definitions [ Ref 60\-61, Ref 65\-66 ]:
+.Sp
+.Vb 4
+\&    HydrogenBondDonor: NH, NH2, OH
+\&    HydrogenBondAcceptor: N[!H], O
+\&    PositivelyIonizable: +, NH2
+\&    NegativelyIonizable: \-, C(=O)OH, S(=O)OH, P(=O)OH
+.Ve
+.IP "\fBSetMaxNeighborhoodRadius\fR" 4
+.IX Item "SetMaxNeighborhoodRadius"
+.Vb 1
+\&    $AtomNeighborhoodsFingerprints\->SetMaxNeighborhoodRadius($Radius);
+.Ve
+.Sp
+Sets maximum neighborhood radius to use during atom neighborhood fingerprints generation and
+returns \fIAtomNeighborhoodsFingerprints\fR.
+.IP "\fBSetMinNeighborhoodRadius\fR" 4
+.IX Item "SetMinNeighborhoodRadius"
+.Vb 1
+\&    $AtomNeighborhoodsFingerprints\->SetMinNeighborhoodRadius($Radius);
+.Ve
+.Sp
+Sets minimum neighborhood radius to use during atom neighborhood fingerprints generation and
+returns \fIAtomNeighborhoodsFingerprints\fR.
+.IP "\fBStringifyAtomNeighborhoodsFingerprints\fR" 4
+.IX Item "StringifyAtomNeighborhoodsFingerprints"
+.Vb 1
+\&    $String = $Fingerprints\->StringifyAtomNeighborhoodsFingerprints();
+.Ve
+.Sp
+Returns a string containing information about \fIAtomNeighborhoodsFingerprints\fR object.
+.SH "AUTHOR"
+.IX Header "AUTHOR"
+Manish Sud <msud@san.rr.com>
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+Fingerprints.pm, FingerprintsStringUtil.pm, AtomTypesFingerprints.pm, EStateIndiciesFingerprints.pm,
+ExtendedConnectivityFingerprints.pm, MACCSKeys.pm, PathLengthFingerprints.pm,
+TopologicalAtomPairsFingerprints.pm, TopologicalAtomTripletsFingerprints.pm,
+TopologicalAtomTorsionsFingerprints.pm, TopologicalPharmacophoreAtomPairsFingerprints.pm,
+TopologicalPharmacophoreAtomTripletsFingerprints.pm
+.SH "COPYRIGHT"
+.IX Header "COPYRIGHT"
+Copyright (C) 2015 Manish Sud. All rights reserved.
+.PP
+This file is part of MayaChemTools.
+.PP
+MayaChemTools is free software; you can redistribute it and/or modify it under
+the terms of the \s-1GNU\s0 Lesser General Public License as published by the Free
+Software Foundation; either version 3 of the License, or (at your option)
+any later version.