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General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.
Gene namei
Official gene symbol, which is typically a short form of the gene name, according to HGNC.
Assigned HPA protein class(es) for the encoded protein(s).
Disease related genes Human disease related genes Metabolic proteins Potential drug targets Transporters
Predicted locationi
All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.
Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.
Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).
The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.
Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.
Chromosome
2
Cytoband
p13.3
Chromosome location (bp)
70935900 - 70965431
Number of transcriptsi
Number of protein-coding transcripts from the gene as defined by Ensembl.
Useful information about the protein provided by UniProt.
Non-catalytic subunit of the V1 complex of vacuolar(H+)- ATPase (V-ATPase), a multisubunit enzyme composed of a peripheral complex (V1) that hydrolyzes ATP and a membrane integral complex (V0) that translocates protons 1. V-ATPase is responsible for acidifying and maintaining the pH of intracellular compartments and in some cell types, is targeted to the plasma membrane, where it is responsible for acidifying the extracellular environment 2. Essential for the proper assembly and activity of V-ATPase 3. In renal intercalated cells, mediates secretion of protons (H+) into the urine thereby ensuring correct urinary acidification 4. Required for optimal olfactory function by mediating the acidification of the nasal olfactory epithelium (By similarity)....show less
Biological process (UniProt)i
Keywords assigned by UniProt to proteins because they are involved in a particular biological process.
Hydrogen ion transport, Ion transport, Transport
Ligand (UniProt)i
Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.
ATP-binding, Nucleotide-binding
Gene summary (Entrez)i
Useful information about the gene from Entrez
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 one of two V1 domain B subunit isoforms and is found in the kidney. Mutations in this gene cause distal renal tubular acidosis associated with sensorineural deafness. [provided by RefSeq, Jul 2008]...show less
PROTEIN INFORMATIONi
The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.
The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.
The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.
The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Metabolic proteins Transporters Primary Active Transporters Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Disease related genes Potential drug targets Human disease related genes Urinary system diseases Kidney diseases Mapped to neXtProt neXtProt - Evidence at protein level Protein evidence (Kim et al 2014) Protein evidence (Ezkurdia et al 2014)
C9JL73 [Direct mapping] Vacuolar proton pump subunit B
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Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Urinary system diseases Kidney diseases Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Urinary system diseases Kidney diseases Protein evidence (Ezkurdia et al 2014)
Metabolic proteins Predicted intracellular proteins Intracellular proteins predicted by MDM and MDSEC Human disease related genes Urinary system diseases Kidney diseases Protein evidence (Ezkurdia et al 2014)
The Human Protein Atlas project is funded
