ATP6V0B

ATP6V0B
Identifiers
Aliases	ATP6V0B, ATP6F, HATPL, VMA16, ATPase H+ transporting V0 subunit b
External IDs	MGI: 1890510 HomoloGene: 2986 GeneCards: ATP6V0B
Gene ontology Molecular function • hydrogen ion transmembrane transporter activity • proton-transporting ATPase activity, rotational mechanism • transporter activity Cellular component • vacuole • integral component of membrane • vacuolar membrane • membrane • vacuolar proton-transporting V-type ATPase, V0 domain • proton-transporting V-type ATPase, V0 domain • phagocytic vesicle membrane • endosome membrane • proton-transporting two-sector ATPase complex, proton-transporting domain Biological process • regulation of macroautophagy • vacuolar acidification • ion transmembrane transport • insulin receptor signaling pathway • ATP hydrolysis coupled proton transport • proton transport • transport • ion transport • transferrin transport • phagosome acidification Sources:Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	533	114143
Ensembl	ENSG00000117410	ENSMUSG00000033379
UniProt	Q99437	Q91V37
RefSeq (mRNA)	NM_004047 NM_001039457 NM_001294333	NM_033617
RefSeq (protein)	NP_001034546.1 NP_004038.1	NP_291095.1
Location (UCSC)	Chr 1: 43.97 – 43.98 Mb	Chr 4: 117.88 – 117.89 Mb
PubMed search	[1]	[2]
Wikidata

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V-type proton ATPase 21 kDa proteolipid subunit is an enzyme that in humans is encoded by the ATP6V0B gene.^[3][4]

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 encoded protein is part of the transmembrane V0 domain and is the human counterpart of yeast VMA16. Two alternatively spliced transcript variants that encode different proteins have been found for this gene.^[4]

References

1. "Human PubMed Reference:".
2. "Mouse PubMed Reference:".
3. Nishigori H, Yamada S, Tomura H, Fernald AA, Le Beau MM, Takeuchi T, Takeda J (Oct 1998). "Identification and characterization of the gene encoding a second proteolipid subunit of human vacuolar H(+)-ATPase (ATP6F)". Genomics. 50 (2): 222–8. doi:10.1006/geno.1998.5310. PMID 9653649.
4. "Entrez Gene: ATP6V0B ATPase, H+ transporting, lysosomal 21kDa, V0 subunit b".

Further reading

• Finbow ME, Harrison MA (1997). "The vacuolar H+-ATPase: a universal proton pump of eukaryotes.". Biochem. J. 324 (3): 697–712. doi:10.1042/bj3240697. PMC 1218484. PMID 9210392.
• Stevens TH, Forgac M (1998). "Structure, function and regulation of the vacuolar (H+)-ATPase.". Annu. Rev. Cell Dev. Biol. 13: 779–808. doi:10.1146/annurev.cellbio.13.1.779. PMID 9442887.
• Nelson N, Harvey WR (1999). "Vacuolar and plasma membrane proton-adenosinetriphosphatases.". Physiol. Rev. 79 (2): 361–85. PMID 10221984.
• Forgac M (1999). "Structure and properties of the vacuolar (H+)-ATPases.". J. Biol. Chem. 274 (19): 12951–4. doi:10.1074/jbc.274.19.12951. PMID 10224039.
• Kane PM (1999). "Introduction: V-ATPases 1992-1998.". J. Bioenerg. Biomembr. 31 (1): 3–5. doi:10.1023/A:1001884227654. PMID 10340843.
• Wieczorek H, Brown D, Grinstein S, et al. (1999). "Animal plasma membrane energization by proton-motive V-ATPases.". BioEssays. 21 (8): 637–48. doi:10.1002/(SICI)1521-1878(199908)21:8<637::AID-BIES3>3.0.CO;2-W. PMID 10440860.
• Nishi T, Forgac M (2002). "The vacuolar (H+)-ATPases--nature's most versatile proton pumps.". Nat. Rev. Mol. Cell Biol. 3 (2): 94–103. doi:10.1038/nrm729. PMID 11836511.
• Kawasaki-Nishi S, Nishi T, Forgac M (2003). "Proton translocation driven by ATP hydrolysis in V-ATPases.". FEBS Lett. 545 (1): 76–85. doi:10.1016/S0014-5793(03)00396-X. PMID 12788495.
• Morel N (2004). "Neurotransmitter release: the dark side of the vacuolar-H+ATPase.". Biol. Cell. 95 (7): 453–7. doi:10.1016/S0248-4900(03)00075-3. PMID 14597263.
• Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Izumi H, Ise T, Murakami T, et al. (2003). "Structural and functional characterization of two human V-ATPase subunit gene promoters.". Biochim. Biophys. Acta. 1628 (2): 97–104. doi:10.1016/S0167-4781(03)00119-2. PMID 12890556.