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. Author manuscript; available in PMC: 2016 Jul 1.

Published in final edited form as: J Am Soc Mass Spectrom. 2015 May 6;26(7):1103–1114. doi: 10.1007/s13361-015-1125-y

Activation of the ion/ion complex produced via the ion/ion reaction between peroxymonosulfate anions and doubly protonated (a) ARAMAKA and (c) bradykinin (RPPGFSPFR). Further CID of the [M+H+O]⁺ species produced for (b) ARAMAKA and (d) bradykinin. Asterisks (*) indicate ammonia losses, degree signs (°) indicate water losses, and the lightning bolt ( ) indicates species subjected to CID.

Inline graphic — Activation of the ion/ion complex produced via the ion/ion reaction between peroxymonosulfate anions and doubly protonated (a) ARAMAKA and (c) bradykinin (RPPGFSPFR). Further CID of the [M+H+O]⁺ species produced for (b) ARAMAKA and (d) bradykinin. Asterisks (*) indicate ammonia losses, degree signs (°) indicate water losses, and the lightning bolt ( ) indicates species subjected to CID.