Anion-transporting ATPase. Catalyzes the extrusion of arsenite (By similarity). Involved in resistance to arsenite and antimonite but not to arsenate. arsenite(in) + ATP + H2O = ADP + arsenite(out) + H(+) + phosphate By arsenite and antimonite. Deletion of the arsADRC operon results in increased sensitivity to arsenite and antimonite but not arsenate. Belongs to the arsA ATPase family.