SOD2
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Superoxide dismutase 2, mitochondrial, also known as SOD2, is a human gene.
This gene is a member of the iron/manganese superoxide dismutase family. It encodes a mitochondrial matrix protein that forms a homotetramer and binds one manganese ion per subunit. This protein binds to the superoxide byproducts of the mitochondrial electron transport chain and converts them to hydrogen peroxide and diatomic oxygen. Mutations in this gene have been associated with idiopathic cardiomyopathy (IDC), sporadic motor neuron disease, and cancer. Alternate transcriptional splice variants, encoding different isoforms, have been characterized.[1] Mice lacking Sod2 die shortly after birth, indicating that the unchecked levels of superoxide are incompatible with mammalian life. However, mice 50% deficient in Sod2 have a normal lifespan and minimal phenotypic defects.
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[edit] Further reading
- Zelko IN, Mariani TJ, Folz RJ (2003). "Superoxide dismutase multigene family: a comparison of the CuZn-SOD (SOD1), Mn-SOD (SOD2), and EC-SOD (SOD3) gene structures, evolution, and expression.". Free Radic. Biol. Med. 33 (3): 337-49. PMID 12126755.
- Faraci FM, Didion SP (2005). "Vascular protection: superoxide dismutase isoforms in the vessel wall.". Arterioscler. Thromb. Vasc. Biol. 24 (8): 1367-73. doi: . PMID 15166009.