Ribonuclease P
Further , RNase P is one of two known multiple turnover ribozymes in nature ( the other being the ribosome ) , the discovery of which earned Sidney Altman and Thomas Cech the Nobel Prize in Chemistry in 1989: in the 1970s , Altman discovered the existence of precursor tRNA with flanking sequences and was the first to characterize RNase P and its activity in processing of the 5' leader sequence of precursor tRNA . 
<triplet> Sidney Altman <subj> Nobel Prize in Chemistry <obj> award received <triplet> Thomas Cech <subj> Nobel Prize in Chemistry <obj> award received