Sodium/Potassium-Transporting Atpase Subunit Beta-2 (ATP1B2) Human Recombinant Protein

The protein encoded by this gene belongs to the family of Na+/K+ and H+/K+ ATPases beta chain proteins, 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 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. This enzyme is composed of two subunits, a large catalytic subunit (alpha) and a smaller glycoprotein subunit (beta). The beta subunit regulates, through assembly of alpha/beta heterodimers, the number of sodium pumps transported to the plasma membrane. The glycoprotein subunit of Na+/K+ -ATPase is encoded by multiple genes. This gene encodes a beta 2 subunit. [provided by RefSeq, Jul 2008]

ATP1B2: This is the non-catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of Na(+) and K(+) ions across the plasma membrane. The exact function of the beta-2 subunit is not known. Belongs to the X(+)/potassium ATPases subunit beta family.

Protein type: Membrane protein, integral; Cell adhesion; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 17p13.1

Cellular Component: apical plasma membrane; cytoplasm; plasma membrane; sodium:potassium-exchanging ATPase complex

Molecular Function: protein binding; ATPase activator activity; sodium:potassium-exchanging ATPase activity; ATPase binding

Biological Process: cellular sodium ion homeostasis; potassium ion import; protein stabilization; transport; positive regulation of ATPase activity; blood coagulation; cell adhesion; leukocyte migration; transmembrane transport; cellular potassium ion homeostasis