Part of the high-affinity ABC transporter complex FrcBCA involved in fructose uptake. Is also a high-affinity transporter for ribose and mannose (PubMed:11466273). Responsible for the translocation of the substrate across the membrane (Probable). The complex is composed of two ATP-binding proteins (FrcA), two transmembrane proteins (FrcC) and a solute-binding protein (FrcB). Induced by fructose. Disruption mutant is unable to grow on fructose as sole carbon source, but can still grow with ribose and mannose as sole carbon source. Belongs to the binding-protein-dependent transport system permease family.