Involved in the uptake of iron in complex with the siderophore anguibactin. Binds and transports ferric-anguibactin from the cell surface to the periplasm. Part of an iron transport system composed of the outer membrane receptor FatA, the periplasmic binding protein FatB and the inner membrane proteins FatC and FatD (PubMed:1748657). Energy for the transport is provided by the TonB2 system (PubMed:15557661). Induced by iron-limiting conditions. Mutants are unable to grow under iron-limiting conditions in the presence of anguibactin. Belongs to the TonB-dependent receptor family.