Figure 11 of
Srivastava, Mol Vis 2003;
Figure 11. ES-MS/MS analysis of a tryptic fragment with mass of 591.97 (in QTOF) and 1,180.53 (in MALDI-TOF) of the 9 kDa isoform I
Note the oxidation of the tryptophan-156 residue in the γD-9 kDa isoform I. A similar oxidation of tryptophan was also seen in the 9 kDa isoforms II and isoform III (not shown).