Enables ATP hydrolysis activity and proton-transporting ATPase activity, rotational mechanism. Predicted to be involved in cellular iron ion homeostasis and cellular response to increased oxygen levels. Predicted to act upstream of or within ion transport. Located in cytosol; lysosomal membrane; and plasma membrane. Part of vacuolar proton-transporting V-type ATPase complex. Is expressed in several structures, including alimentary system; central nervous system; genitourinary system; respiratory system; and sensory organ. Orthologous to human ATP6V1G1 (ATPase H+ transporting V1 subunit G1). [provided by Alliance of Genome Resources, Apr 2022]