This gene encodes a component of a multisubunit enzyme that mediates acidification of eukaryotic intracellular organelles. Vacuolar ATPase (V-ATPase) is comprised of a cytosolic V1 (site of the ATP catalytic site) and a transmembrane V0 domain. V-ATPase dependent organelle acidification is necessary for such intracellular processes as protein sorting, zymogen activation, and receptor-mediated endocytosis. The encoded protein of this gene may assist in the V-ATPase-mediated acidification of neuroendocrine secretory granules. This protein may also play a role in early development. [provided by RefSeq, Aug 2013]
Forensic Context
A study in primary rat microglia demonstrated that alcohol exposure significantly alters the transcriptome, downregulating numerous phagocytosis-related mRNAs including the ATP6AP1 (Atp6ap1), a component of the phagosomal H+ transporting vacuolar ATPase [Kalinin et al. DOI:10.1186/S12974-018-1184-7].