Glutathione peroxidase Wikipedia Antioxidant Enzyme Systems TJ. Glutathione peroxidase is an important enzyme in cellular antioxidant defense systems, detoxifying peroxides and hydroperoxides. As a component of the glutathione cycle, it protects the liver from reactive oxygen metabolites. Selenocysteine Coordination of elicitors and ascorbate glutathione cycle: A vital nexus for mitigating post harvest injury and losses of cultivated fruits Plant Trends Non covalent interactions in the glutathione peroxidase active center and their influence on the enzyme activity Organic & Biomolecular Chemistry (RSC Publishing)