Atp1a2 encodes an Na+/K+ ATPase, which is a membrane protein that is composed of two subunits - alpha and beta. The Na+/K+ ATPase pump maintains an essential electrochemical gradient within cells through the active transport of sodium (Na+) and potassium (K+) ions. The Atp1a2 encoded protein belongs to the family of P-type cation transport ATPases, and to the subfamily of Na+/K+ -ATPases. Na+/K+ -ATPase is an integral membrane protein responsible for establishing and maintaining the electrochemical gradients of Na and K ions across the plasma membrane. These ion gradients are essential for osmoregulation, for sodium-coupled transport of a variety of organic and inorganic molecules, and for electrical excitability of nerve and muscle. The ATPase enzyme is composed of two subunits, a large catalytic subunit (alpha) and a smaller glycoprotein subunit (beta), and the catalytic subunit of Na+/K+ -ATPase is encoded by multiple genes. The Atp1a2 gene encodes an alpha 2 subunit. Mutations in the Atp1a2 gene result in familial basilar or hemiplegic migraines, and in a rare syndrome known as alternating hemiplegia of childhood. Diseases associated with ATP1A2 include Alternating Hemiplegia Of Childhood and Migraine, Familial Hemiplegic, 2.
ATPase Na+/K+ transporting alpha 2 polypeptide; ATPase, Na+/K+ transporting, alpha 2 polypeptide; ATPase, Na+K+ transporting, alpha 2; Na(+)/K(+) ATPase alpha(+) subunit; Na(+)/K(+) ATPase alpha-2 subunit; Na+/K+ -ATPase alpha 2 subunit; Na+/K+ ATPase, alpha-A(+) catalytic polypeptide; Na+/K+ ATPase, alpha-B polypeptide; Sodium Potassium ATPase; Sodium pump subunit alpha-2; sodium-potassium ATPase catalytic subunit alpha-2; sodium/potassium-transporting ATPase alpha-2 chain; Sodium/potassium-transporting ATPase subunit alpha-2