Peptide Fragment Ion Analyser (PFIA): a simple and versatile tool for the interpretation of tandem mass spectrometric data and de novo sequencing of peptides

Jagannath, Swaminathan and Sabareesh, Varatharajan (2007) Peptide Fragment Ion Analyser (PFIA): a simple and versatile tool for the interpretation of tandem mass spectrometric data and de novo sequencing of peptides. In: Rapid Communications in Mass Spectrometry, 21 (18). pp. 3033-3038.

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Abstract

The software Peptide Fragment Ion Analyser (PFIA) aids in the analysis and interpretation of tandem mass spectrometric data of peptides. The software package has been designed to facilitate the analysis of product ions derived from acyclic and cyclic peptide natural products that possess unusual amino acid residues and are heavily post-translationally modified. The software consists of two programmes: (a) PFIA-I lists the amino acid compositions and their corresponding product ion types for a queried m/z value' (z = +1) and (b) PFIA-II displays fragmentation pattern iagram(s) and lists all sequence-specific product ion types for' the protonated adduct of 'a queried sequence'. The unique feature of PFIA-II is its ability to handle cyclic peptides. The two programmes used in combination can prove helpful for deriving peak assignments in the de novo sequencing of novel peptides.

Item Type:	Journal Article
Publication:	Rapid Communications in Mass Spectrometry
Publisher:	John Wiley & Sons
Additional Information:	Copyright of this article belongs to John Wiley & Sons.
Department/Centre:	Division of Biological Sciences > Molecular Biophysics Unit
Date Deposited:	04 Aug 2008
Last Modified:	19 Sep 2010 04:48
URI:	http://eprints.iisc.ac.in/id/eprint/15402

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