1a9n

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{{STRUCTURE_1a9n| PDB=1a9n | SCENE= }}
{{STRUCTURE_1a9n| PDB=1a9n | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE SPLICEOSOMAL U2B''-U2A' PROTEIN COMPLEX BOUND TO A FRAGMENT OF U2 SMALL NUCLEAR RNA'''
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===CRYSTAL STRUCTURE OF THE SPLICEOSOMAL U2B''-U2A' PROTEIN COMPLEX BOUND TO A FRAGMENT OF U2 SMALL NUCLEAR RNA===
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==Overview==
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We have determined the crystal structure at 2.4 A resolution of a ternary complex between the spliceosomal U2B"/U2A' protein complex and hairpin-loop IV of U2 small nuclear RNA. Unlike its close homologue the U1A protein, U2B" binds to its cognate RNA only in the presence of U2A', which contains leucine-rich repeats in its sequence. The concave surface of a parallel beta-sheet within the leucine-rich-repeat region of U2A' interacts with the ribonucleoprotein domain of U2B" on the surface opposite its RNA-binding surface. The basic carboxy-terminal region of U2A' interacts with the RNA stem. The crystal structure reveals how protein-protein interaction regulates RNA-binding specificity, and how replacing only a few key residues allows the U2B" and U1A proteins to discriminate between their cognate RNA hairpins by forming alternative networks of interactions.
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(as it appears on PubMed at http://www.pubmed.gov), where 9716128 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9716128}}
==About this Structure==
==About this Structure==
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[[Category: Rna]]
[[Category: Rna]]
[[Category: Snrnp]]
[[Category: Snrnp]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 10:01:05 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jun 30 16:26:24 2008''

Revision as of 13:26, 30 June 2008

Image:1a9n.png

Template:STRUCTURE 1a9n

CRYSTAL STRUCTURE OF THE SPLICEOSOMAL U2B-U2A' PROTEIN COMPLEX BOUND TO A FRAGMENT OF U2 SMALL NUCLEAR RNA

Template:ABSTRACT PUBMED 9716128

About this Structure

1A9N is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structure of the spliceosomal U2B"-U2A' protein complex bound to a fragment of U2 small nuclear RNA., Price SR, Evans PR, Nagai K, Nature. 1998 Aug 13;394(6694):645-50. PMID:9716128

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