A C terminal extension of ST are said to be in position number 275a and 275b, respectively, although, again, of course they have {HEAD ~ their own “real” position number} in {TAIL ~ the variant amino acid sequence} 
A C terminal extension of ST are said to be in position number 275a and 275b , respectively , although , again , of course they have { HEAD ~ their own “ real ” position number } in { TAIL ~ the variant amino acid sequence }
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 HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL