Probably part of an ABC transporter complex that could be involved in peptide import. Probably responsible for the translocation of the substrate across the membrane (By similarity). The complex is composed of two ATP-binding proteins (BRA0404 and BRA0405), two transmembrane proteins (BRA0407 and BRA0408) and a solute-binding protein (BRA0409). Belongs to the binding-protein-dependent transport system permease family.