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ATP2A3

Sarcoplasmic/endoplasmic reticulum calcium ATPase 3 is an enzyme that in humans is encoded by the ATP2A3 gene.[1][2]

This gene encodes one of the SERCA Ca2+-ATPases, which are intracellular pumps located in the sarcoplasmic or endoplasmic reticula of cells. SERCA3 expression was originally described as non-muscular, but was recently observed in cardiomyocyte. This enzyme catalyzes the hydrolysis of ATP coupled with the translocation of calcium from the cytosol to the sarcoplasmic reticulum lumen, and is involved in calcium sequestration associated with muscular excitation and contraction. Alternative splicing results in 6 transcript variants encoding different isoforms named SERCA3a to SERCA3f.[2]

References

References

  1. Dode L, Wuytack F, Kools PF, Baba-Aissa F, Raeymaekers L, Brike F, van de Ven WJ, Casteels R (Nov 1996). “cDNA cloning, expression and chromosomal localization of the human sarco/endoplasmic reticulum Ca2+-ATPase 3 gene”. Biochem J. 318 (2): 689–99. PMC 1217674. PMID 8809064.
  2. 2.0 2.1 “Entrez Gene: ATP2A3 ATPase, Ca++ transporting, ubiquitous”.
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