It is demonstrated that {TAIL ~ such proteins} bind {HEAD ~ ATP} and nucleic acid and possess helicase and ATPase activities 
It is demonstrated that { TAIL ~ such proteins } bind { HEAD ~ ATP } and nucleic acid and possess helicase and ATPase activities
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH