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Field desorption mass spectrum of glucagon
Author(s) -
Winkler H. U.,
Beuhler R. J.,
Friedman L.
Publication year - 1976
Publication title -
biomedical mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0306-042X
DOI - 10.1002/bms.1200030502
Subject(s) - mass spectrum , desorption , fragmentation (computing) , chemistry , amino acid , field desorption , peptide , residue (chemistry) , ion , mass spectrometry , adsorption , chromatography , biochemistry , organic chemistry , biology , ecology , ionization
A low resolution, high sensitivity study has been made of the field desorption mass spectrum of glucagon, a 29 amino acid residue underivatized peptide. The highest molecular weight fragments observed, when spectra were taken under conditions which minimized surface reactions of the peptide on the emitter, were found to contain no more than 18 amino acid residues. The most probable fragmentation processes for ions larger than m / e 600 were the production of fragments containing 10, 11 or 12 amino acid residues.