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