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The identification of cyclic nucleotides from living systems using collision-induced dissociation of ions generated by fast atom bombardment mass spectrometry

โœ Scribed by Eric E. Kingston; John H. Beynon; Russell P. Newton


Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
711 KB
Volume
11
Category
Article
ISSN
1076-5174

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โœฆ Synopsis


Extracts derived from rat liver and Phaseolus leaves are shown, by collision-induced dissociation of [MH]+ ions

generated by fast atom bombardment mass spectrometry, to contain cytidine 3',5'-cyclic monophosphate and guanosine 3',5'-cyclic monophosphate respectively, and not the 2',3'-cyclic isomers. Interference peaks, expected to be common to all mass-analysed ion kinetic energy spectra of ions generated by the fast atom bombardment process from glycerol-based matrices are identified. It is shown that unequivocal identification of cytidine 3'J'-cyclic monophosphate can be made at the microgram level. Attempts to derive a quantitative procedure based on using different cyclic nucleotides as internal standards were unsuccessful due to the poor solubility of these compounds in the matrix system.


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