The Glutathione System: A Journey from Cyanobacteria to Higher Eukaryotes 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 Untargeted metabolomics links glutathione to bacterial cell cycle progression Nature Metabolism The glutathione redox cycle, demonstrating the inter conversion of Download Scientific Diagram Ascorbate Glutathione Pathway Encyclopedia MDPI Glutathione Metabolism in Plants under Stress: Beyond Reactive Oxygen Species Detoxification