Selected peptides that were observed with a cysteine residue that had been biologically oxidized from proteins that were preferentially identified before H2O2 oxidation treatment of cells.

†The total number of scans that were observed for that peptide. All of the scans tabulated passed a 3% FDR filter cutoff. The replicate analysis of 6 independent biological samples for both the control and H2O2 treated cells are shown. Data referred to in the text combine the replicate analyses.‡The eValue represents the best (i.e. smallest) OMSSA eValue score matched to the particular peptide sequence. This provides a relative measure of the overall confidence that the peptide was in the sample (i.e. a true positive), with 0.00E+000 representing the highest confidence.*Lower case “c” indicates location of carboxyamidomethyl derivatization(s).