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Identification of FadD33 Lys-260 acetylation site by MS/MS. Shown is an MS/MS spectrum of a triply charged tryptic peptide from FadD33 (YGLIGKAcYSRR) bearing an acetylated lysine. The acetylated lysine is indicated as KAc. Most of the major fragmentation ions in the mass spectrum match the predicted b or y ions.
