Probably part of an ABC transporter complex that could be involved in peptide import. Probably responsible for energy coupling to the transport system (By similarity). The complex is composed of two ATP-binding proteins (BruAb2_0796 and BruAb2_0797), two transmembrane proteins (BruAb2_0794) and a solute-binding protein (BruAb2_0792). Belongs to the ABC transporter superfamily.