Part of the ABC transporter complex YclNOPQ involved in uptake of ferric-petrobactin. Petrobactin is a photoreactive 3,4-catecholate siderophore produced by many members of the B.cereus group, including B.anthracis. Probably responsible for the translocation of the substrate across the membrane. The complex is composed of two ATP-binding proteins (YclP), two transmembrane proteins (YclN and YclO) and a solute-binding protein (YclQ). Belongs to the binding-protein-dependent transport system permease family. FecCD subfamily.