Part of the ABC transporter complex involved in sulfate/thiosulfate import. Responsible for energy coupling to the transport system. ATP + H2O + sulfate(out) = ADP + H(+) + phosphate + sulfate(in) ATP + H2O + thiosulfate(out) = ADP + H(+) + phosphate + thiosulfate(in) The initiator methionine is created by RNA editing. The nonsense codons at positions 72, 121, 169, 193 and 346 are modified to sense codons. Belongs to the ABC transporter superfamily. Sulfate/tungstate importer (TC 3.A.1.6) family.