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Field desorption mass spectra of the peptides Pro‐Leu‐Gly‐NH 2 , Cbz‐Gly‐Pro‐Leu‐Gly‐Pro and bradykinin
Author(s) -
AsantePoku Stephen,
Wood Gordon W.,
Schmidt Donald E.
Publication year - 1975
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.1200020303
Subject(s) - pentapeptide repeat , tripeptide , chemistry , fragmentation (computing) , peptide , stereochemistry , mass spectrum , molecule , field desorption , ion , organic chemistry , biochemistry , biology , ecology , ionization
Field desorption mass spectra of a tripeptide Pro‐Leu‐Gly‐NH 2 , a pentapeptide Cbz‐Gly‐Pro‐Leu‐Gly‐Pro and a nonapeptide Arg‐Pro‐Pro‐Gly‐Phe‐Ser‐Pro‐Phe‐Arg are presented. In each case, a [M] + · or [M + 1] + peak of the peptide is obtained. Sufficient fragmentation of the peptide backbone occurred to allow sequence determination of all three peptides. The pentapeptide produced [M] + ·, [M + 1] + and [M + 2] + · ions which also included molecules of ethylacetate, ethanol and/or water bound to the ion.