UniprotKB/SwissProt ID: Q9V7N5 (Q9V7N5)
Gene Name:
Vha44
Organism: Drosophila melanogaster (Fruit fly)
Function: 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 (By similarity). 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 (By similarity). Subunit C is necessary for the assembly of the catalytic sector of the enzyme and is likely to have a specific function in its catalytic activity (By similarity). In enterocytes, acts as part of a pHCl-2 sensory pathway which mediates Tor-dependent larval growth and metabolism in response to zinc availability (PubMed:32269334). Likely acts in maintaining enterocyte lysosomal acidification which consequently promotes Tor activation at the lysosome membrane (PubMed:32269334)
Other Modifications: View all modification sites in dbPTM
Protein Subcellular Localization:
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