1gid

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{{STRUCTURE_1gid| PDB=1gid | SCENE= }}
{{STRUCTURE_1gid| PDB=1gid | SCENE= }}
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'''CRYSTAL STRUCTURE OF A GROUP I RIBOZYME DOMAIN: PRINCIPLES OF RNA PACKING'''
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===CRYSTAL STRUCTURE OF A GROUP I RIBOZYME DOMAIN: PRINCIPLES OF RNA PACKING===
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==Overview==
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Group I self-splicing introns catalyze their own excision from precursor RNAs by way of a two-step transesterification reaction. The catalytic core of these ribozymes is formed by two structural domains. The 2.8-angstrom crystal structure of one of these, the P4-P6 domain of the Tetrahymena thermophila intron, is described. In the 160-nucleotide domain, a sharp bend allows stacked helices of the conserved core to pack alongside helices of an adjacent region. Two specific long-range interactions clamp the two halves of the domain together: a two-Mg2+-coordinated adenosine-rich corkscrew plugs into the minor groove of a helix, and a GAAA hairpin loop binds to a conserved 11-nucleotide internal loop. Metal- and ribose-mediated backbone contacts further stabilize the close side-by-side helical packing. The structure indicates the extent of RNA packing required for the function of large ribozymes, the spliceosome, and the ribosome.
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(as it appears on PubMed at http://www.pubmed.gov), where 8781224 is the PubMed ID number.
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{{ABSTRACT_PUBMED_8781224}}
==About this Structure==
==About this Structure==
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[[Category: P4-p6 ribozyme domain of the tetrahymena group i intron]]
[[Category: P4-p6 ribozyme domain of the tetrahymena group i intron]]
[[Category: Rna]]
[[Category: Rna]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 17:36:46 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 05:20:38 2008''

Revision as of 02:20, 1 July 2008

Image:1gid.png

Template:STRUCTURE 1gid

CRYSTAL STRUCTURE OF A GROUP I RIBOZYME DOMAIN: PRINCIPLES OF RNA PACKING

Template:ABSTRACT PUBMED 8781224

About this Structure

Full crystallographic information is available from OCA.

Reference

Crystal structure of a group I ribozyme domain: principles of RNA packing., Cate JH, Gooding AR, Podell E, Zhou K, Golden BL, Kundrot CE, Cech TR, Doudna JA, Science. 1996 Sep 20;273(5282):1678-85. PMID:8781224

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