Figure 2
From: Effect of UVC Irradiation on the Oxidation of Histidine in Monoclonal Antibodies
Tandem mass spectra of the peptides VYAC(CAM)E- VTXQGLSSPVTK corresponding to the residues 191–207, in which X = His198 (a) eluted at 33.0 min (Fig. 1) is modified. The m/z values of individual precursor ions are shown at the tops of the peaks in Fig. 1. (b) X = iso-Asp, eluted at 35.3 min, (c) X = Asn eluted at 36.3 min, and (d) X = Asp, eluted at 37.4 min.
