Tags: Protein.
Glutathione peroxidase 3 (GPx-3) also known as plasma glutathione peroxidase (GPx-P) or extracellular glutathione peroxidase is an enzyme that in humans is encoded by the GPX3 gene.GPx-3belongs to the glutathione peroxidase family which functions in the detoxification of hydrogen peroxide. It contains a selenocysteine (Sec) residue at its active site. The selenocysteine is encoded by the UGA codon which normally signals translation termination.