Atpase, Na+/K+ Transporting Beta 3 Polypeptide (ATP1b3) Antibody – Rabbit Polyclonal

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 3 subunit. This gene encodes a beta 3 subunit. A pseudogene exists for this gene, and it is located on chromosome 2. [provided by RefSeq, Jul 2008]

ATP1B3: 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-3 subunit is not known. Belongs to the X(+)/potassium ATPases subunit beta family.

Protein type: Membrane protein, integral; Transporter

Chromosomal Location of Human Ortholog: 3q23

Cellular Component: caveola; extracellular exosome; melanosome; plasma membrane; sodium:potassium-exchanging ATPase complex

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

Biological Process: cellular potassium ion homeostasis; cellular sodium ion homeostasis; establishment or maintenance of transmembrane electrochemical gradient; leukocyte migration; membrane repolarization; positive regulation of ATPase activity; positive regulation of potassium ion transmembrane transporter activity; potassium ion import; protein localization to plasma membrane; protein stabilization; transport