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Potential mechanisms of protein S-glutathionylation. This figure depicts various biochemical mechanisms by which protein thiol moieties could be converted to protein–SSG mixed disulide adducts. (1) via thiol-disulfide exchange; (2) via sulfenic acid intermediates; (3) via sulfenyamide intermediates; (4) via thiyl radical intermediates; (5) via thiosulfinate intermediates; (6) via S-nitrosyl intermediates. (See text for further explanation).
