Glutathione peroxidase 1 (GPX1) (U49S), human, recombinant Cusabio Biomol.com Simplify your Glutathione Measurements Arbor Assays Glutathione Peroxidase 1 in Health and Disease: From Molecular Mechanisms to Therapeutic Opportunities Edith Lubos, Joseph Loscalzo, Diane E. Handy, 2011 CERI: Sidebar: The Recycling of Glutathione 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