{HEAD ~ Exodus} has {TAIL ~ a highly basic carboxy terminus}, more consistent with the MCP sub family than RANTES 
{ HEAD ~ Exodus } has { TAIL ~ a highly basic carboxy terminus } , more consistent with the MCP sub family than RANTES
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH