Table I.
Summary of the peptide sequence and corresponding oxidative post-translational modification (OPTM) obtained from MS/MS analysis
| Amnio Acid Residue in the 75 kDa Subunit | Ion and m/z | Peptide Sequence and OPTM | Remarks |
|---|---|---|---|
| C226 | 788.822+ | 219SGNIIDIC226(SG)PVGAL231 | S-glutathionylation |
| C226 | 692.693+ | 219SGNIIDIC226(DMPO)PVGAL231 | thiyl radical adduct |
| C367 | 1301.852+ | 361VDSDTLC367(SG)TEEVFPTAGAGTDLR382 | S-glutathionylation |
| C554 | 527.033+ | 544MLFLLGADGGC554(DMPO)ITR557 | thiyl radical adduct |
| C554 | 780.832+ | 544M(ox)LFLLGADGGC554(SO3)ITR557 | S-sulfonation |
| C727 | 607.013+ | 713AVTEGAHAVEEPSIC727(SG) | S-glutathionylation |
| C727 | 542.183+ | 713AVTEGAHAVEEPSIC727(DMPO) | thiyl radical adduct |
| C727 | 766.182+ | 713AVTEGAHAVEEPSIC727(SO3) | S-sulfonation |