In {TAIL ~ order} for {HEAD ~ this reaction} to be useful, however, the ribozyme recognition elements have to be mutable, such that the ribozyme can be targeted to bind with and react on non native sequences 
In { TAIL ~ order } for { HEAD ~ this reaction } to be useful , however , the ribozyme recognition elements have to be mutable , such that the ribozyme can be targeted to bind with and react on non native sequences
OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH