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. 2021 Jun 12;20:100114. doi: 10.1016/j.mcpro.2021.100114

Fig. 4.

Fig. 4

Specific fragment ions of coeluting triacetylated forms of H4G4-R17 peptide after TMA derivatization.A, representative coeluting precursor peak of K5acK8acK16ac and K5acK12acK16ac forms and peaks of their y- and b-specific fragments obtained in LC–MS/MS PRM analysis. B, fragments of y- and b-ion series for K5acK8acK16ac and K5acK12acK16ac peptide forms with corresponding m/z values. Specific fragments for each form are marked in bold. PRM, parallel reaction monitoring; TMA, trimethylacetic anhydride.