Part of the ABC transporter complex FepBDGC involved in ferric enterobactin uptake (PubMed:1838574, PubMed:1479347). Responsible for the translocation of the substrate across the membrane (Probable). The complex is composed of two ATP-binding proteins (FepC), two transmembrane proteins (FepD and FepG) and a solute-binding protein (FepB). Controlled in part by the amount of available iron (PubMed:1838574). Induced 1.4-fold by hydroxyurea (PubMed:20005847). Belongs to the binding-protein-dependent transport system permease family. FecCD subfamily.