Fig. 2.

Identification of Prx II. (A) MALDI mass spectrum of tryptic peptides from spot 21, identified as Prx II. Peaks marked with stars match the underlined sequence of Prx II shown in C.(B)MS/MS spectrum of peak [M + 2H]²⁺ at m/z 512.29 from spot 21 matches sequence LSEDYGVLK of Prx II (shaded in C). Only the most intense y-series fragment ions were labeled with single letter codes. (C) Sequence alignment of human Prx I and Prx II. Different amino acid residues between Prx I and Prx II are boxed.