The other is {HEAD ~ a tool} for evaluating a complex that includes {TAIL ~ one or more large amino group} containing molecules, such as a ribosome complex or a multi unit enzyme 
The other is { HEAD ~ a tool } for evaluating a complex that includes { TAIL ~ one or more large amino group } containing molecules , such as a ribosome complex or a multi unit enzyme
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH