Voltage dependent anion channel required for acidification and functions of the Golgi apparatus that may function in counter-ion conductance (By similarity). Plays a role in lymphocyte development, probably by acting as a RABL3 effector in hematopoietic cells (By similarity). Homotrimer (By similarity). Interacts with RABL3; the interaction stabilizes GPR89 (By similarity). Belongs to the Golgi pH regulator (TC 1.A.38) family.