| Function | 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. 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. In renal intercalated cells, can partially compensate the lack of ATP6V1B1 and mediate secretion of protons (H+) into the urine under base-line conditions but not in conditions of acid load. |
| Protein Name | V-Type Proton Atpase Subunit B - Brain IsoformV-Atpase Subunit B 2Endomembrane Proton Pump 58 Kda SubunitHo57Vacuolar Proton Pump Subunit B 2 |
| Database Links | Reactome: R-HSA-1222556Reactome: R-HSA-77387Reactome: R-HSA-917977Reactome: R-HSA-9639288Reactome: R-HSA-983712Reactome: R-HSA-9857377 |
| Cellular Localisation | Apical Cell MembraneMelanosomeCytoplasmCytoplasmic VesicleSecretory VesicleSynaptic Vesicle MembranePeripheral Membrane ProteinClathrin-Coated Vesicle MembraneIdentified By Mass Spectrometry In Melanosome Fractions From Stage I To Stage Iv |
| Alternative Protein Names | V-Type Proton Atpase Subunit B - Brain Isoform proteinV-Atpase Subunit B 2 proteinEndomembrane Proton Pump 58 Kda Subunit proteinHo57 proteinVacuolar Proton Pump Subunit B 2 proteinATP6V1B2 proteinATP6B2 proteinVPP3 protein |
Information sourced from Uniprot.org
