Glutathione peroxidase 4: a new player in neurodegeneration? Molecular Psychiatry Expression and enzyme activity of glutathione reductase is upregulated by Fe deficiency in graminaceous plants Plant Molecular Biology Springer Nature Link File:Reductive half reaction of glutathione reductase.png Wikimedia Commons Simplify your Glutathione Measurements Arbor Assays Item Scheme showing the enzymatic reactions that catalyze the pyruvate dehydrogenase complex, including pyruvate dehydrogenase activity and diaphorase activity of DLD (A) as well as the glutathione reductase peroxidase activity (B).