The protein encoded by this gene belongs to the family of P-type primary ion transport ATPases characterized by the formation of an aspartyl phosphate intermediate during the reaction cycle. These enzymes remove bivalent calcium ions from eukaryotic cells against very large concentration gradients and play a critical role in intracellular calcium homeostasis. The mammalian plasma membrane calcium ATPase isoforms are encoded by at least four separate genes and the diversity of these enzymes is further increased by alternative splicing of transcripts. The expression of different isoforms and splice variants is regulated in a developmental, tissue- and cell type-specific manner, suggesting that these pumps are functionally adapted to the physiological needs of particular cells and tissues.[6]
Clinical significance
ATP2B1 is a critical host factor supporting cytotoxicity caused by Chironex fleckeri (a type of box jellyfish) stings. Blocking ATP2B1 is believed to have therapeutic potential for treating pain and skin necrosis caused by these stings.[7]
Mutations of the ATP2B1 gene cause a neurodevelopmental delay with mild to moderately impaired intellectual development and mild speech delay.[8]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Olson S, Wang MG, Carafoli E, Strehler EE, McBride OW (April 1991). "Localization of two genes encoding plasma membrane Ca2(+)-transporting ATPases to human chromosomes 1q25-32 and 12q21-23". Genomics. 9 (4): 629–41. doi:10.1016/0888-7543(91)90356-J. PMID1674727.
^Rahimi MJ, Urban N, Wegler M, Sticht H, Schaefer M, Popp B, Gaunitz F, Morleo M, Nigro V, Maitz S, Mancini GM, Ruivenkamp C, Suk EK, Bartolomaeus T, Merkenschlager A, Koboldt D, Bartholomew D, Stegmann AP, Sinnema M, Duynisveld I, Salvarinova R, Race S, de Vries BB, Trimouille A, Naudion S, Marom D, Hamiel U, Henig N, Demurger F, Rahner N, Bartels E, Hamm JA, Putnam AM, Person R, Abou Jamra R, Oppermann H (May 2022). "De novo variants in ATP2B1 lead to neurodevelopmental delay". American Journal of Human Genetics. 109 (5): 944–952. doi:10.1016/j.ajhg.2022.03.009. PMC9118097. PMID35358416.
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Strehler EE, Zacharias DA (January 2001). "Role of alternative splicing in generating isoform diversity among plasma membrane calcium pumps". Physiological Reviews. 81 (1): 21–50. doi:10.1152/physrev.2001.81.1.21. PMID11152753. S2CID9062253.
Strehler EE, Treiman M (May 2004). "Calcium pumps of plasma membrane and cell interior". Current Molecular Medicine. 4 (3): 323–35. doi:10.2174/1566524043360735. PMID15101689.
Kessler F, Falchetto R, Heim R, Meili R, Vorherr T, Strehler EE, Carafoli E (December 1992). "Study of calmodulin binding to the alternatively spliced C-terminal domain of the plasma membrane Ca2+ pump". Biochemistry. 31 (47): 11785–92. doi:10.1021/bi00162a016. PMID1332771.
James PH, Pruschy M, Vorherr TE, Penniston JT, Carafoli E (May 1989). "Primary structure of the cAMP-dependent phosphorylation site of the plasma membrane calcium pump". Biochemistry. 28 (10): 4253–8. doi:10.1021/bi00436a020. PMID2548572.
Howard A, Legon S, Walters JR (November 1993). "Human and rat intestinal plasma membrane calcium pump isoforms". The American Journal of Physiology. 265 (5 Pt 1): G917-25. doi:10.1152/ajpgi.1993.265.5.G917. PMID7694502.
Kumar R, Haugen JD, Penniston JT (April 1993). "Molecular cloning of a plasma membrane calcium pump from human osteoblasts". Journal of Bone and Mineral Research. 8 (4): 505–13. doi:10.1002/jbmr.5650080415. PMID8386431. S2CID43674131.
Benkwitz C, Kubisch C, Kraft K, Neyses L (January 1997). "Investigation of the Met-267 Arg exchange in isoform 1 of the human plasma membrane calcium pump in patients with essential hypertension by the amplification-created restriction site technique". Journal of Molecular Medicine. 75 (1): 62–6. doi:10.1007/s001090050088. PMID9020386. S2CID7041799.
Elshorst B, Hennig M, Försterling H, Diener A, Maurer M, Schulte P, Schwalbe H, Griesinger C, Krebs J, Schmid H, Vorherr T, Carafoli E (September 1999). "NMR solution structure of a complex of calmodulin with a binding peptide of the Ca2+ pump". Biochemistry. 38 (38): 12320–32. doi:10.1021/bi9908235. PMID10493800. S2CID24440343.