V-type proton ATPase subunit G 3 is an enzyme that in humans is encoded by the ATP6V1G3 gene.[5][6]

AliasesATP6V1G3, ATP6G3, Vma10, ATPase H+ transporting V1 subunit G3
External IDsOMIM: 618071 MGI: 2450548 HomoloGene: 13630 GeneCards: ATP6V1G3
Gene location (Human)
Chromosome 1 (human)
Chr.Chromosome 1 (human)[1]
Chromosome 1 (human)
Genomic location for ATP6V1G3
Genomic location for ATP6V1G3
Band1q31.3Start198,523,222 bp[1]
End198,540,945 bp[1]
RefSeq (mRNA)


RefSeq (protein)


Location (UCSC)Chr 1: 198.52 – 198.54 MbChr 1: 138.27 – 138.29 Mb
PubMed search[3][4]
View/Edit HumanView/Edit Mouse


This gene encodes a component of vacuolar ATPase (V-ATPase), a multisubunit enzyme that mediates acidification of eukaryotic intracellular organelles. V-ATPase dependent organelle acidification is necessary for such intracellular processes as protein sorting, zymogen activation, receptor-mediated endocytosis, and synaptic vesicle proton gradient generation. V-ATPase is composed of a cytosolic V1 domain and a transmembrane V0 domain. The V1 domain consists of three A and three B subunits, two G subunits plus the C, D, E, F, and H subunits. The V1 domain contains the ATP catalytic site. The V0 domain consists of five different subunits: a, c, c', c'' and d. Additional isoforms of many of the V1 and V0 subunit proteins are encoded by multiple genes or alternatively spliced transcript variants. This gene encodes one of three G subunit proteins. Transcript variants encoding different isoforms have been found for this gene.[6]


  1. ^ a b c ENSG00000263014 GRCh38: Ensembl release 89: ENSG00000151418, ENSG00000263014 - Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000026394 - 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. ^ Stevens TH, Forgac M (Feb 1998). "Structure, function and regulation of the vacuolar (H+)-ATPase". Annual Review of Cell and Developmental Biology. 13: 779–808. doi:10.1146/annurev.cellbio.13.1.779. PMID 9442887.
  6. ^ a b "Entrez Gene: ATP6V1G3 ATPase, H+ transporting, lysosomal 13kDa, V1 subunit G3".

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