FRD3 (FERRIC REDUCTASE DEFECTIVE 3); antiporter. similar to MATE efflux family protein [Arabidopsis thaliana] (TAIR:AT1G51340.2); similar to unnamed protein product [Vitis vinifera] (GB:CAO40847.1); contains InterPro domain Multi antimicrobial extrusion protein MatE; (InterPro:IPR002528)