Calculate the FP4 Molecular Fingerprints

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Description

Calculate the FP4 Molecular Fingerprints

Usage

1
extractDrugOBFP4(molecules, type = c("smile", "sdf"))

Arguments

molecules

R character string object containing the molecules. See the example section for details.

type

'smile' or 'sdf'.

Details

Calculate the 512 bit FP4 fingerprints provided by OpenBabel.

Value

A matrix. Each row represents one molecule, the columns represent the fingerprints.

Author(s)

Nan Xiao <http://nanx.me>

Examples

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mol1 = 'C1CCC1CC(CN(C)(C))CC(=O)CC'  # one molecule SMILE in a vector
mol2 = c('CCC', 'CCN', 'CCN(C)(C)', 'c1ccccc1Cc1ccccc1',
         'C1CCC1CC(CN(C)(C))CC(=O)CC')  # multiple SMILEs in a vector
mol3 = readChar(system.file('compseq/DB00860.sdf', package = 'Rcpi'),
                nchars = 1e+6)  # single molecule in a sdf file
mol4 = readChar(system.file('sysdata/OptAA3d.sdf', package = 'Rcpi'),
                nchars = 1e+6)  # multiple molecules in a sdf file


smifp0 = extractDrugOBFP4(mol1, type = 'smile')
smifp1 = extractDrugOBFP4(mol2, type = 'smile')
sdffp0 = extractDrugOBFP4(mol3, type = 'sdf')
sdffp1 = extractDrugOBFP4(mol4, type = 'sdf')

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