Sodium Potassium ATPase Beta 1 (ATP1B1) is an integral membrane protein complex that hydrolyzes ATP to maintain the transmembrane gradients of Na+ and K+ found in most mammalian cells. Na/K ATPase pumps consist of alpha/beta heterodimers. Beta 1 is the glycosylated, non-catalytic component of the active enzyme responsible for the formation of these alpha/beta heterodimers. Through this assembly, the beta polypeptide regulates the number of sodium pumps transported to the plasma membrane.
