Part of the ABC transporter complex FepBDGC involved in ferric enterobactin uptake (PubMed:1838574, PubMed:3011753). Responsible for energy coupling to the transport system (Probable). ATP + Fe(III)-enterobactin(out) + H2O = ADP + Fe(III)-enterobactin(in) + H(+) + phosphate 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 1.5-fold by hydroxyurea (PubMed:20005847). Belongs to the ABC transporter superfamily. Extended N-terminus.