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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

Generation of multiple radical sites in melittin. (a) Ion/ion reaction between sulfate radical anion and melittin [M+5H]⁵⁺. (b) CID of the triply adducted species. (c) CID of the third H₂SO₄ loss from the triply adducted species, viz., [M-H]^2+•••. Asterisks (*) indicate ammonia losses, degree signs (°) indicate water losses, and the lightning bolt ( ) indicates species subjected to CID. Green circles indicate H₂SO₄ loss.

Inline graphic — Generation of multiple radical sites in melittin. (a) Ion/ion reaction between sulfate radical anion and melittin [M+5H]⁵⁺. (b) CID of the triply adducted species. (c) CID of the third H₂SO₄ loss from the triply adducted species, viz., [M-H]^2+•••. Asterisks (*) indicate ammonia losses, degree signs (°) indicate water losses, and the lightning bolt ( ) indicates species subjected to CID. Green circles indicate H₂SO₄ loss.