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.
Synonyms: V-ATPase 116 kDa isoform a2, Lysosomal H(+)-transporting ATPase V0 subunit a2, TJ6, Vacuolar proton translocating ATPase 116 kDa subunit a isoform 2
Gene name: ATP6V0A2