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Surface-induced dissociation of multiply protonated peptides

✍ Scribed by Ashley L. McCormack; Jennifer L. Jones; Vicki H. Wysocki

Book ID: 103995555
Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 319 KB
Volume: 3
Category: Article
ISSN: 1044-0305
DOI: 10.1016/1044-0305(92)80010-i

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✦ Synopsis

We report here surface-induced dissociation spectra of three multiply charged peptides: doubly protonated angiotensin I, doubly protonated renin substrate, and triply protonated melittin. For comparison, the collision-activated dissociation spectra of renin substrate and melittin are also presented. The spectra show that surface-induced dissociation provides structural information on multiply charged peptides at the picomole per microliter sample concentrations compatible with electrospray ionization. For multiply protonated angiotensin I, renin substrate, and melittin, surface collisions (l00-165 eV) favor a limited number of fragmentation pathways, which are the same as those favored in collision-activated dissociation experiments.

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