Probable transporter for a GTP-driven Fe(2+) uptake system. Iron uptake is repressed by the global regulator Fur. Acquisition of Mn(2+) in addition to Fe(2+) is required for intercellular survival, replication in macrophages in vitro and for full virulence in vivo. Belongs to the TRAFAC class TrmE-Era-EngA-EngB-Septin-like GTPase superfamily. FeoB GTPase (TC 9.A.8) family.