( Ribozymes ( ( rocked ( the ( molecular ( biological world ) ) ) ) . ) )
(ROOT (S (NP (NNS Ribozymes)) (VP (VBD rocked) (NP (DT the) (JJ molecular) (JJ biological) (NN world))) (. .)))
Ribozymes rocked the molecular biological world.
(ROOT (S (NP (NP (DT The) (NN discovery)) (PP (IN of) (NP (NNS ribozymes)))) (VP (VBD nullified) (NP (DT the) (NN idea)) (SBAR (IN that) (S (NP (DT all) (JJ biological) (NNS catalysts)) (VP (VBP are) (NP (NNS proteins)))))) (. .)))