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Infrared Multiple‐Photon Dissociation Mechanisms of Peptides of Glycine
Author(s) -
Wu Ronghu,
McMahon Terry B.
Publication year - 2008
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.200800594
Subject(s) - infrared multiphoton dissociation , dissociation (chemistry) , peptide , protonation , chemistry , ion , infrared , infrared spectroscopy , biophysics , stereochemistry , biochemistry , biology , physics , optics , organic chemistry
Peptide patterns : The current experimental results indicate that infrared multiple‐photon dissociation (IRMPD) of peptides forms more structurally informative sequence b and y ions, and fewer less useful nonsequence ions. Also the dissociation pathways are the same through excitation of different modes of the peptide. For the first time, it has been confirmed that the peptide dissociation pathway is not related to the initial protonation site or the conformation (e.g., cyclic or linear, see graphic) of the peptide.