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. 2004 Jul 12;101(29):10798–10803. doi: 10.1073/pnas.0402397101

Fig. 3.

Fig. 3.

MS/MS of modified PilE tryptic peptides in glycosylation mutants. (A) Characterization of the species at m/z 1,117.5 [M + 2H]2+ from a pgtA mutant (strain GGA). The peptide 57WPENNTSAGVASPPTDIK74 is modified with PE and DATDH. (B) Characterization of the species at m/z 1,003.5 [M + 2H]2+ from a pglC mutant (strain GGC). The peptide 57WPENNTSAGVASPPTDIK74 is modified with PE. Fragmentation patterns are shown in A Upper and B Upper. The same results were obtained for the corresponding tryptic peptides from the pglD and pglF mutants (Fig. 7, strains GGD and GGF).