Using a group I intron derived ribozyme from Tetrahymena thermophila, {HEAD ~ the sequence} of {TAIL ~ RE1} was mutated and the resultant ribozyme then bound to a new, complementary substrate (Murphy, F. L. & Cech, T. R. Proc 
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Using a group I intron derived ribozyme from Tetrahymena thermophila , { HEAD ~ the sequence } of { TAIL ~ RE1 } was mutated and the resultant ribozyme then bound to a new , complementary substrate ( Murphy , F. L. & Cech , T. R. Proc
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL 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