Peptides (version 0.4)

pI: To compute the isoelectic point (pI) of a protein sequence

Description

The isoelectric point (pI), sometimes abbreviated to IEP, is the pH at which a particular molecule or surface carries no net electrical charge. It is the same function computePI include in seqinr package modified to read strings directly

Usage

pI(seq)

Arguments

seq

AA sequence string in upper case

See Also

computePI

Examples

pI("HPETLVKVKDAEDQLGARVGYIELDLNSGKILESFRPEERFPMMSTFKVLLCGAVLSRVDAGQEQLGRRIHYSQNDLVEY
SPVTEKHLTDGMTVRELCSAAITMSDNTAANLLLTTIGGPKELTDFLRQIGDKETRLDRIEPDLNEGKLGDLRDTTTPKA
IASTLRKLLTGELLTLASRQQLIDWMEADKVAGPLLRSALPAGWFIADKSGAGERGSRGIIAALGPDGKPSRIVVIYTTG
SQATMDERNRQIAEIGASLIKHW")