
In 1989, Sidney Altman and Thomas R. Cech shared the Nobel Prize in Chemistry for their discovery of catalytic properties of RNA. Cech was studying the splicing of RNA in a unicellular organism called Tetrahymena thermophila. He found that the precursor RNA could splice in vitro in the absence of proteins. Altman studied ribonuclease P (RNase P), a ribonucleoprotein that is a key enzyme in the biosynthesis of tRNA. RNase P is an RNA processing endonuclease that specifically cleaves precursors of tRNA, releasing 5' precursor sequences and mature tRNAs. RNase P is involved in processing all species of tRNA and is present in all cells and organelles that carry out tRNA synthesis. What follows is a personal recollection by Altman of how he came to study this remarkable enzyme.
Base Sequence, RNA, Transfer, Protein Conformation, Endoribonucleases, Nucleic Acid Conformation, RNA, Catalytic, Ribonuclease P
Base Sequence, RNA, Transfer, Protein Conformation, Endoribonucleases, Nucleic Acid Conformation, RNA, Catalytic, Ribonuclease P
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