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1l8v

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{{STRUCTURE_1l8v| PDB=1l8v | SCENE= }}
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'''Crystal Structure of a Mutant (C109G,G212C) P4-P6 Domain of the Group I Intron from Tetrahymena Thermophilia'''
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===Crystal Structure of a Mutant (C109G,G212C) P4-P6 Domain of the Group I Intron from Tetrahymena Thermophilia===
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==Overview==
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Functional RNAs often form compact structures characterized by closely packed helices. Crystallographic analysis of several large RNAs revealed a prevalent interaction in which unpaired adenosine residues dock into the minor groove of a receptor helix. This A-minor motif, potentially the most important element responsible for global RNA architecture, has also been suggested to contribute to the fidelity of protein synthesis by discriminating against near-cognate tRNAs on the ribosome. The specificity of A-minor interactions is fundamental to RNA tertiary structure formation, as well as to their proposed role in translational accuracy. To investigate A-minor motif specificity, we analyzed mutations in an A-minor interaction within the Tetrahymena group I self-splicing intron. Thermodynamic and x-ray crystallographic results show that the A-minor interaction strongly prefers canonical base pairs over base mismatches in the receptor helix, enabling RNA interhelical packing through specific recognition of Watson-Crick minor groove geometry.
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(as it appears on PubMed at http://www.pubmed.gov), where 12189204 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12189204}}
==About this Structure==
==About this Structure==
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[[Category: Ribozyme domain]]
[[Category: Ribozyme domain]]
[[Category: Rna]]
[[Category: Rna]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:40:38 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 11:58:29 2008''

Revision as of 08:58, 2 July 2008

Image:1l8v.png

Template:STRUCTURE 1l8v

Crystal Structure of a Mutant (C109G,G212C) P4-P6 Domain of the Group I Intron from Tetrahymena Thermophilia

Template:ABSTRACT PUBMED 12189204

About this Structure

Full crystallographic information is available from OCA.

Reference

Specificity of RNA-RNA helix recognition., Battle DJ, Doudna JA, Proc Natl Acad Sci U S A. 2002 Sep 3;99(18):11676-81. Epub 2002 Aug 20. PMID:12189204

Page seeded by OCA on Wed Jul 2 11:58:29 2008

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