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Enzymatic Cleavage of RNA by RNA (Nobel Lecture)
Author(s) -
Altman Sidney
Publication year - 1990
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199007491
Subject(s) - ribozyme , rna , transfer rna , ribosomal rna , tetrahymena , ribonuclease , biochemistry , phosphodiester bond , rna ligase , enzyme , nucleotide , rna splicing , biology , rnase p , chemistry , microbiology and biotechnology , gene
Biological catalysis by RNA —this discovery at the beginning of the 1980s was sensational, since it had been assumed that only proteins were capable of functioning as biocatalysts. Sidney Altman studied the enzyme ribonuclease P, which is composed of RNA and protein subunits, and found conditions under which the RNA component could catalyze the formation of mature tRNA in the absence of protein. Thomas R. Cech discovered the phenomenon of self‐splicing rRNA in Tetrahymena thermophila . This rRNA catalyzes the consecutive transesterification of specific phosphodiester groups in its nucleotide sequence and thereby the excision of an intervening sequence (IVS; see picture below) and ligation of the remaining rRNA molecule. The work of Altman and Cech , for which they were awarded the Nobel Prize in chemistry in 1989, upset a paradigm in biochemistry.