V-type proton ATPase 116 kDa subunit a isoform 1 is an enzyme that in humans is encoded by the ATP6V0A1 gene.^[5][6]

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ATP6V0A1
Identifiers
Aliases	ATP6V0A1, Atp6v0a1, AA959968, ATP6a1, Atp6n1, Atp6n1a, Atpv0a1, Vpp-1, Vpp1, Stv1, Vph1, a1, ATPase, H+ transporting, lysosomal V0 subunit a1, ATP6N1, ATP6N1A, VPP1, ATPase H+ transporting V0 subunit a1
External IDs	OMIM: 192130 MGI: 103286 HomoloGene: 3795 GeneCards: ATP6V0A1
Gene location (Human) Chr. Chromosome 17 (human)[1] Band 17q21.2 Start 42,458,844 bp[1] End 42,522,611 bp[1]
Gene location (Mouse) Chr. Chromosome 11 (mouse)[2] Band 11 D|11 64.04 cM Start 100,900,278 bp[2] End 100,954,545 bp[2]
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in prefrontal cortex cingulate gyrus Brodmann area 9 anterior pituitary nucleus accumbens hypothalamus amygdala caudate nucleus putamen islet of Langerhans Top expressed in superior frontal gyrus subiculum cerebellar cortex piriform cortex dorsomedial hypothalamic nucleus entorhinal cortex primary motor cortex habenula pontine nuclei superior colliculus More reference expression data BioGPS More reference expression data
Gene ontology Molecular function ATPase binding proton-transporting ATPase activity, rotational mechanism protein binding proton transmembrane transporter activity Cellular component integral component of membrane proton-transporting V-type ATPase, V0 domain phagocytic vesicle membrane Golgi apparatus intracellular membrane-bounded organelle membrane vacuolar proton-transporting V-type ATPase, V0 domain melanosome vacuolar proton-transporting V-type ATPase complex endosome membrane extracellular exosome cytoplasmic vesicle membrane cytoplasmic vesicle cytoplasm cytosol plasma membrane nuclear speck secretory granule membrane ficolin-1-rich granule membrane lysosomal membrane intracellular organelle perinuclear region of cytoplasm Biological process insulin receptor signaling pathway transferrin transport vacuolar proton-transporting V-type ATPase complex assembly toxin transport ion transport ion transmembrane transport ATP synthesis coupled proton transport regulation of macroautophagy vacuolar acidification phagosome acidification neutrophil degranulation transport Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 535 11975 Ensembl ENSG00000033627 ENSMUSG00000019302 UniProt Q93050 Q9Z1G4 RefSeq (mRNA) NM_001130020 NM_001130021 NM_005177 NM_001243049 NM_001243050 NM_001243051 NM_016920 NM_001362636 NM_001362637 NM_001362638 NM_001362639 NM_001362640 NM_001362641 RefSeq (protein) NP_001123492 NP_001123493 NP_005168 NP_001365451 NP_001365452 NP_001365459 NP_001365460 NP_001365461 NP_001365462 NP_001365463 NP_001365464 NP_001365465 NP_001365466 NP_001365467 NP_001365468 NP_001365469 NP_001365470 NP_001365471 NP_001365472 NP_001365473 NP_001365474 NP_001365475 NP_001365476 NP_001365477 NP_001365478 NP_001365479 NP_001365480 NP_001365481 NP_001365483 NP_001365485 NP_001365486 NP_001229978 NP_001229979 NP_001229980 NP_058616 NP_001349565 NP_001349566 NP_001349567 NP_001349568 NP_001349569 NP_001349570 Location (UCSC) Chr 17: 42.46 – 42.52 Mb Chr 11: 100.9 – 100.95 Mb PubMed search [3] [4]
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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 A subunit proteins and the encoded protein is associated with clathrin-coated vesicles. The occurrence of splice variants encoding different protein products has been reported, but the full-length natures of these transcripts have not been determined.^[6]