Anti-CYB5R3 Antibody, clone 1D9.2 clone 1D9.2, from mouse

NADH-cytochrome b5 reductase 3 (EC 1.6.2.2; UniProt P00387; also known as B5R, Cytochrome b5 reductase, Diaphorase-1) is encoded by the CYB5R3 (also known as DIA1) gene (Gene ID 1727) in human. Cytochrome b5 reductase is a flavoprotein that serves as electron donor for cytochrome b5, a ubiquitous electron carrier and participates in a variety of metabolic pathways, including desaturation and elongation of fatty acids, cholesterol biosynthesis, drug metabolism, and, in erythrocyte, methemoglobin reduction. It is produced as two different isoforms that have different localizations. The membrane-bound form is found in somatic cells where it is anchored to the endoplasmic reticulum and mitochondrial membranes. The soluble form is found in erythrocytes. Mutations in the CYB5R3 gene result in deficiency in NADH-cytochrome b5 reductase+C20 in erythrocytes, which causes methemoglobinemia types I and II that are characterized by the presence of excessive amounts of methemoglobin in blood cells and their reduced capacity to carry oxygen. Ref.: Elahian, F., et al. (2014). Crit. Rev Biotechnol. 34, 134-143.