The MRT polypeptides of the invention are capable of transporting {HEAD ~ metals} such as {TAIL ~ Fe}, Cd, Co, Mn, Pb, Hg and Zn 
The MRT polypeptides of the invention are capable of transporting { HEAD ~ metals } such as { TAIL ~ Fe } , Cd , Co , Mn , Pb , Hg and Zn
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH