Part of the ABC transporter complex FhuCBGD involved in iron(3+)-hydroxamate import. Binds the iron(3+)-hydroxamate complex and transfers it to the membrane-bound permease. Partially required for the transport of desferrioxamine. The complex is composed of an ATP-binding protein (FhuC), two transmembrane proteins (FhuB and FhuG) and a solute-binding protein (FhuD or YxeB). Present in detergent-resistant membrane (DRM) fractions that may be equivalent to eukaryotic membrane rafts; these rafts include proteins involved in signaling, molecule trafficking and protein secretion. Belongs to the bacterial solute-binding protein 8 family.