FEATURES

FAMILY

DESCRIPTION

Also known as VPP2_MOUSE, Atp6v0a2, Atp6n1b, Tj6. Part of the proton channel of V-ATPases (By similarity). Essential component of the endosomal pH-sensing machinery. May play a role in maintaining the Golgi functions, such as glycosylation maturation, by controlling the Golgi pH. In aerobic conditions, involved in intracellular iron homeostasis, thus triggering the activity of Fe(2+) prolyl hydroxylase (PHD) enzymes, and leading to HIF1A hydroxylation and subsequent proteasomal degradation (By similarity). The V-ATPase is a heteromultimeric enzyme composed of at least thirteen different subunits. It has a membrane peripheral V1 sector for ATP hydrolysis and an integral V0 for proton translocation. The V1 sector comprises subunits A-H, whereas V0 includes subunits a, d, c, c', and c''. Directly interacts with PSCD2 through its N-terminal cytosolic tail in an intra-endosomal acidification-dependent manner (PubMed:16415858). Disruption of this interaction results in the inhibition of endocytosis (PubMed:16415858). Interacts with SPAAR (By similarity).

EXTERNAL LINKS

Atp6v0a2

Mutations

Mutation(s) distribution

Mutations table