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