The completion of GSH synthesis is catalyzed by glutathione synthetase (GS), in a reaction in which -glutamyl-cysteine is covalently linked to glycine ( Figure 1 )
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The capacity for GSH synthesis is insufficient to maintain GSH concentrations when tissues are exposed to certain drugs or their metabolites (e.g., acetaminophen), redox cycling compounds (e.g., menadione), peroxides (e.g., tertbutyl hydroperoxide), X-rays, or ultraviolet radiation
International Journal of Endocrinology, 2018 (1), 3720813