Predicted to enable voltage-gated monoatomic anion channel activity. Predicted to be involved in intracellular pH reduction. Predicted to act upstream of or within monoatomic ion transmembrane transport. Predicted to be located in membrane. Predicted to be part of monoatomic ion channel complex. Predicted to be active in Golgi cisterna membrane. Orthologous to human GPR89A (G protein-coupled receptor 89A) and GPR89B (G protein-coupled receptor 89B).