science DrinkAid Biological Databases and Tools Glutathione Metabolism in C. glutamicum Protein Lounge 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 PPT GLUTATHIONE SYNTHESIS, EFECT OF NUTRITION ON REGULATORY CONTROL MECHANISM PowerPoint Presentation ID:6742619 Molecular Vision: De Donatis, Mol Vis 2010; 16:1025 1033. Figure 1