{TAIL ~ The invention} further relates to screening methods for identifying {HEAD ~ binding partners} of the polypeptides 
{ TAIL ~ The invention } further relates to screening methods for identifying { HEAD ~ binding partners } of the polypeptides
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH