Abstract
The highly conserved ribonuclease RNase Z catalyzes the endonucleolytic removal of the 3' extension of the majority of tRNA precursors. Here we present the structure of the complex between Bacillus subtilis RNase Z and tRNA(Thr), the first structure of a ribonucleolytic processing enzyme bound to tRNA. Binding of tRNA to RNase Z causes conformational changes in both partners to promote reorganization of the catalytic site and tRNA cleavage.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Bacillus subtilis / metabolism
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Catalytic Domain
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Endoribonucleases / chemistry*
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Endoribonucleases / metabolism
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Macromolecular Substances
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Models, Molecular
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Nucleic Acid Conformation
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Protein Conformation
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RNA Processing, Post-Transcriptional
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RNA, Bacterial / chemistry*
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RNA, Bacterial / metabolism
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RNA, Transfer, Thr / chemistry*
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RNA, Transfer, Thr / metabolism
Substances
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Macromolecular Substances
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RNA, Bacterial
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RNA, Transfer, Thr
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Endoribonucleases
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RNase Z
Associated data
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PDB/1EHZ
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PDB/1Y44
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PDB/2FK6