Glutathione Reductase, Spinach

Glutathione Reductase, Wheat germ (EC 1.6.4.2), is a crucial flavoprotein in the antioxidant defense system. In this process, reduced glutathione (GSH) detoxifies hydrogen peroxide via glutathione peroxidase, becoming oxidized to form oxidized glutathione (GSSG) . Glutathione Reductase (GR) then reduces GSSG back to GSH using NADPH, which is converted to NADP+. The regenerated GSH is available for further hydrogen peroxide detoxification. Glutathione Reductase utilizes FAD as a cofactor.