Linked scan investigation of peptide degradation initiated by liquid secondary ion mass spectrometry.
[MH]+ ions of peptides are degraded in one step to acyl ions, indicating the presence of different [MH]+ species. In contrast to protons, cations are added mainly at the carboxylate function of a peptide zwitterion. These species are degraded by loss of the C-terminal amino acid in the form of CO and an imine.
Renner
D
D
Institut für Organische Chemie I, Universität Bayreuth, FRG.
Spiteller
G
G
D055598:Chemical Phenomena; D002621:Chemistry; D007097:Imines; D013058:Mass Spectrometry / Q000379:methods; D009842:Oligopeptides
D007097:Imines; D009842:Oligopeptides