A preferred protein is an enzyme such as {HEAD ~ thermolysin}, elastase, {TAIL ~ asparaginase}, lysozyme, lipase or urease 
A preferred protein is an enzyme such as { HEAD ~ thermolysin } , elastase , { TAIL ~ asparaginase } , lysozyme , lipase or urease
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH