Sodium/potassium-transporting ATPase subunit beta-3 is an enzyme that in humans is encoded by the ATP1B3gene.[5][6][7] ATP1B3 has also been designated as CD298 (cluster of differentiation 298).
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. A pseudogene exists for this gene, and it is located on chromosome 2.[7]
Lingrel JB, Orlowski J, Shull MM, Price EM (1990). "Molecular genetics of Na,K-ATPase". Prog. Nucleic Acid Res. Mol. Biol. Progress in Nucleic Acid Research and Molecular Biology. 38: 37–89. doi:10.1016/S0079-6603(08)60708-4. ISBN978-0-12-540038-1. PMID2158121.
Jørgensen PL (1982). "Mechanism of the Na+, K+ pump. Protein structure and conformations of the pure (Na+ +K+)-ATPase". Biochim. Biophys. Acta. 694 (1): 27–68. doi:10.1016/0304-4157(82)90013-2. PMID6289898.
Zhang H, Li XJ, Martin DB, Aebersold R (2003). "Identification and quantification of N-linked glycoproteins using hydrazide chemistry, stable isotope labeling and mass spectrometry". Nat. Biotechnol. 21 (6): 660–6. doi:10.1038/nbt827. PMID12754519. S2CID581283.
Chi A, Valencia JC, Hu ZZ, et al. (2007). "Proteomic and bioinformatic characterization of the biogenesis and function of melanosomes". J. Proteome Res. 5 (11): 3135–44. doi:10.1021/pr060363j. PMID17081065.
Chiampanichayakul S, Khunkaewla P, Pata S, Kasinrerk W (2007). "Na, K ATPase beta3 subunit (CD298): association with alpha subunit and expression on peripheral blood cells". Tissue Antigens. 68 (6): 509–17. doi:10.1111/j.1399-0039.2006.00726.x. PMID17176442.
Aughey RJ, Murphy KT, Clark SA, et al. (2007). "Muscle Na+-K+-ATPase activity and isoform adaptations to intense interval exercise and training in well-trained athletes". J. Appl. Physiol. 103 (1): 39–47. doi:10.1152/japplphysiol.00236.2006. PMID17446412. S2CID7370462.
