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[20] [7] This conversion is illustrated by the reduction of peroxides (via the sulfenate as an intermediate): GSH + R 2 O 2 GSOR + ROH GSOR + GSH GSSG + ROH Net reaction: 2 GSH + R 2 O 2 GSSG + 2 ROH (R = H, alkyl) and with free radicals, forming glutathionyl radicals (GS ) that may dimerize to disulfide: GSH + R RH + GS 1/2 GSSG Thiyl radicals (such as glutathionyl radicals) are themselves oxidizing species in biology, with a single-electron reduction potential sufficient for oxidation of nucleic acids, proteins and polyunsaturated lipids

PMID: 36684090 Mar Drugs Xanthocillin X Dimethyl Ether Exhibits Anti-Proliferative Effect on Triple-Negative Breast Cancer by Depletion of Mitochondrial Heme

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The finding that there is essentially no change in activity of the rate-limiting enzyme would suggest that there will be no increase in glutathione synthesis