Fig. 6.

Cysteine residues serving as active sites tend to have higher occupancies comparing to other cysteine residues on the same protein. (A) Representative proteins with cysteine residues as the active site. For each protein, the SSG occupancy (blue bar) and total oxidation occupancy (orange bar) for each cysteine site were plotted. Error bars represent standard deviations across four replicates. Active sites were highlighted in red boxes. (B) Structure of GMPR1 with the active site Cys186 highlighted. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)