In another embodiment, {HEAD ~ the nucleic acid} of the invention encodes {TAIL ~ an MRT} polypeptide or an active portion or fragment thereof having an amino acid sequence shown in SEQ ID NO:2, SEQ ID NO:4, SEQ ID NO:6, SEQ ID NO:8, or SEQ ID NO:14 
encodes
In another embodiment , { HEAD ~ the nucleic acid } of the invention encodes { TAIL ~ an MRT } polypeptide or an active portion or fragment thereof having an amino acid sequence shown in SEQ ID NO:2 , SEQ ID NO:4 , SEQ ID NO:6 , SEQ ID NO:8 , or SEQ ID NO:14
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH