Part of the ABC transporter complex SsuABC involved in aliphatic sulfonates import. Responsible for energy coupling to the transport system (Probable). ATP + H2O + aliphatic sulfonate-[sulfonate-binding protein]Side 1 = ADP + phosphate + aliphatic sulfonateSide 2 + [sulfonate-binding protein]Side 1. The complex is composed of two ATP-binding proteins (SsuB), two transmembrane proteins (SsuC) and a solute-binding protein (SsuA). Repressed by sulfate and cystine. Transcriptionally regulated by cbl. Belongs to the ABC transporter superfamily. Aliphatic sulfonates importer (TC 3.A.1.17.2) family.