Influence of a gamma amino acid on the structures and reactivity of peptide a3 ions

Article ID	Journal	Published Year	Pages	File Type
1192258	International Journal of Mass Spectrometry	2012	9 Pages	PDF

Abstract

âº CID of protonated AGabaAIG leads to an unusually abundant a3 ion. âº The AGabaA b3 ion undergoes head-to-tail cyclization while AAA does not. âº Barriers to the a3Â âÂ b2 and a3Â âÂ a3* reactions are significantly higher for the AGabaA sequence than for AAA. âº The AGabaA a3 ion undergoes head-to-tail cyclization while the AAA does not.

Keywords

Relative energies collision induced dissociation Fragmentation Density functional theory Peptides