A potent and selective anti glutathione peroxidase 4 nanobody as a ferroptosis inducer Chemical Science (RSC Publishing) Selective Small Molecule Activator of Patient Derived GPX4 Variant ACS Chemical Biology 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 Measurement of superoxide dismutase, catalase and glutathione peroxidase in cultured cells and tissue Nature Protocols Figure 1 from Comparing glutathione peroxidase and glutathione reductase activity and their associations with cardiovascular measures in Africans and Caucasians : the SABPA study Semantic Scholar Frontiers Research progress of glutathione peroxidase family (GPX) in redoxidation