Available structures
PDBOrtholog search: PDBe RCSB
AliasesATP6V0A2, A2, ARCL, ARCL2A, ATP6A2, ATP6N1D, J6B7, RTF, STV1, TJ6, TJ6M, TJ6S, VPH1, WSS, ATPase H+ transporting V0 subunit a2
External IDsOMIM: 611716 MGI: 104855 HomoloGene: 56523 GeneCards: ATP6V0A2
RefSeq (mRNA)



RefSeq (protein)



Location (UCSC)Chr 12: 123.71 – 123.76 MbChr 5: 124.63 – 124.72 Mb
PubMed search[3][4]
View/Edit HumanView/Edit Mouse

V-type proton ATPase 116 kDa subunit a isoform 2 also known as V-ATPase 116 kDa isoform a2 is an enzyme that in humans is encoded by the ATP6V0A2 gene.[5][6][7]


V-ATPase 116 kDa isoform a2 is a subunit of the vacuolar ATPase (v-ATPase), an heteromultimeric enzyme that is present in intracellular vesicles and in the plasma membrane of specialized cells, and which is essential for the acidification of diverse cellular components. V-ATPase consists of a membrane peripheral V(1) domain for ATP hydrolysis, and an integral membrane V(0) domain for proton translocation. The subunit encoded by this gene is a component of the V(0) domain.[7]

Clinical significance

Mutations in this gene are a cause of both cutis laxa type II and wrinkly skin syndrome.[7]


  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000185344 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000038023 - Ensembl, May 2017
  3. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ^ Lee C, Ghoshal K, Beaman KD (Jan 1991). "Cloning of a cDNA for a T cell produced molecule with a putative immune regulatory role". Mol Immunol. 27 (11): 1137–1144. doi:10.1016/0161-5890(90)90102-6. PMID 2247090.
  6. ^ Kornak U, Reynders E, Dimopoulou A, van Reeuwijk J, Fischer B, Rajab A, Budde B, Nurnberg P, Foulquier F, Lefeber D, Urban Z, Gruenewald S, Annaert W, Brunner HG, van Bokhoven H, Wevers R, Morava E, Matthijs G, Van Maldergem L, Mundlos S (Dec 2007). "Impaired glycosylation and cutis laxa caused by mutations in the vesicular H+-ATPase subunit ATP6V0A2". Nat Genet. 40 (1): 32–34. doi:10.1038/ng.2007.45. PMID 18157129. S2CID 23318808.
  7. ^ a b c "Entrez Gene: ATP6V0A2 ATPase, H+ transporting, lysosomal V0 subunit a2".

Further reading

This article incorporates text from the United States National Library of Medicine, which is in the public domain.