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Fast atom bombardment mass spectra of peptides. Dimer ion studies. Part VIPart V: see Ref. 1; Part IV: see ref. 2. (1989)

Jankowski, K. ; Virelizier, H. ; Gaudin, D. ; [et al.]

Chichester : Wiley-Blackwell

Biological Mass Spectrometry 18 (1989), S. 281-286

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ISSN: 0887-6134

Keywords: Chemistry ; Analytical Chemistry and Spectroscopy

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Positive ion fast atom bombardment mass spectra of the opioid pentapeptides leucine enkephalin (1) (H-Tyr-Gly-Gly-Phe-Leu-OH or YGGFL), methionine enkephalin (2) (H-Tyr-Gly-Gly-Phe-Met-OH or YGGFM) and leucine enkephalin-2H2 (3) (H-Tyr-2Gly-2H2-Gly-Phe-Leu-OH or YGGFL-2H2) have been recorded in glycerol. The following experiments have been carried out: (i) dimer studies [2M + 1]+; (ii) decompositions of dimers: daughter ions from (YGGFL)2, (YGGFL-YGGFL-2H2) and (YGGFL-2H2)2 as well as (YGGFM-YGGFL) and (YGGFM)2 dimers; (iii) solvation site and pyridine collision-activated dissociation studies for dimer ions; (iv) mechanism of formation of [(2M + 1) - Gly4]+ ions.

Additional Material: 7 Ill.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/bms.1200180502

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