Part of the high-affinity ABC transporter complex FruEKFG involved in fructose uptake. Can also transport ribose and xylose, with lower affinity. Probably responsible for energy coupling to the transport system. ATP + D-fructose(out) + H2O = ADP + D-fructose(in) + H(+) + phosphate The complex is composed of an ATP-binding protein (FruK), two transmembrane proteins (FruF and FruG) and a solute-binding protein (FruE). Belongs to the ABC transporter superfamily.