Anti-GPx4

Glutathione peroxidase 4 (GPX4) is a selenocysteine-containing glutathione peroxidase that is encoded by the GPX4 gene in humans and protects cellular membranes from oxidative damage. It is a monomeric protein consisting of a thioredoxin motif and a selenocysteine-glutamine-tryptophan catalytic triad that reduces lipid hydroperoxides, including phospholipid, polyunsaturated lipid, and sterol hydroperoxides, to non-toxic lipid alcohols. During this process, the active site selenocysteine becomes oxidized and must subsequently be replenished by the reducing substrate glutathione (GSH). There are three isoforms of GPX4, mitochondrial mGPX4, cytosolic cGPX4, and nuclear nGPX4/snGPX4, that are expressed in all tissue types in rats, with the highest mRNA levels observed in testes. GPX4 is a key regulator of ferroptosis that inhibits ferroptotic cell death by preventing iron-dependent accumulation of toxic lipid reactive oxygen species. Mutations in GPX4 have been found in patients with Sedaghatian-type spondylometaphyseal dysplasia (SSMD), and silencing of Gpx4 in mice is embryonic lethal. Cayman's GPX4 Polyclonal Antibody can be used for immunohistochemistry (IHC) and Western blot (WB) applications. The antibody recognizes GPX4 at 20 kDa from human, mouse, rat, and porcine samples.Synonyms: Glutathione Peroxidase 4, PhGPx, Phospholipid Hydroperoxide Glutathione Peroxidase. Immunogen: Peptide from an internal region of human GPX4. Formulation: (Request formulation change), 500 µl of peptide affinity-purified polyclonal antibody. Storage Buffer: PBS, pH 7.2, with 50% glycerol and 0.02% sodium azide. Host: Rabbit. Applications: IHC, WB. UniProt Accession #: P36969. Origin: Animal/Rabbit.