V-ion

From Mass Spec Terms
IUPAC RECOMMENDATIONS 2013
V-ion
High-energy product ion of a protonated peptide formally equivalent to a y-ion with the ionizing proton on the N-terminus, but with elimination of HR from the N-terminus where R is the side-chain on the C-atom of the N-terminal residue, to give a (H2N+=CH-CO-) structure.
Related Term(s):
Reference(s):

R. S. Johnson, S. A. Martin, K. Biemann. Int. J. Mass Spectrom. Ion Processes 86, 137 (1988). (http://dx.doi.org/10.1016/0168-1176(88)80060-0 )

From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013.

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