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 Glutathione Metabolism an overview ScienceDirect Topics The ascorbateglutathione cycle coming of age Glutathione reductase Wikipedia Glutathione redox cycle dysregulation in Huntington's disease knock in striatal cells ScienceDirect Ascorbate Glutathione Cycle and Biotic Stress Tolerance in Plants Springer Nature Link