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. 2013 Jul 2;8(7):e68363. doi: 10.1371/journal.pone.0068363

Figure 7. Annotated tandem MS spectra of the FSVSGEGEGDATY*GK peptide from WT GFP.

Figure 7

(A) “y”- and “b”-type ions generated during fragmentation of the FSVSGEGEGDATY*GK peptide. Y* denotes tyrosine in WT GFP or UAA in the GFP Y39TAG mutants. (B) MS/MS spectrum of FSVSGEGEGDATY*GK from WT GFP.