2dt7

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{{STRUCTURE_2dt7| PDB=2dt7 | SCENE= }}
{{STRUCTURE_2dt7| PDB=2dt7 | SCENE= }}
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'''Solution structure of the second SURP domain of human splicing factor SF3a120 in complex with a fragment of human splicing factor SF3a60'''
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===Solution structure of the second SURP domain of human splicing factor SF3a120 in complex with a fragment of human splicing factor SF3a60===
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==Overview==
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The SF3a complex, consisting of SF3a60, SF3a66, and SF3a120, in 17S U2 snRNP is crucial to spliceosomal assembly. SF3a120 contains two tandem SURP domains (SURP1 and SURP2), and SURP2 is responsible for binding to SF3a60. We found that the SURP2 fragment forms a stable complex with an SF3a60 fragment (residues 71-107) and solved its structure by NMR spectroscopy. SURP2 exhibits a fold of the alpha1-alpha2-3(10)-alpha3 topology, and the SF3a60 fragment forms an amphipathic alpha helix intimately contacting alpha1 of SURP2. We also solved the SURP1 structure, which has the same fold as SURP2. The protein-binding interface of SURP2 is quite similar to the corresponding surface of SURP1, except for two amino acid residues. One of them, Leu169, is characteristic of SF3a120 SURP2 among SURP domains. Mutagenesis showed that this single Leu residue is the critical determinant for complex formation, which reveals the protein recognition mechanism in the subunit assembly.
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{{ABSTRACT_PUBMED_17098193}}
==About this Structure==
==About this Structure==
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2DT7 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DT7 OCA].
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2DT7 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DT7 OCA].
==Reference==
==Reference==
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[[Category: Structure genomic]]
[[Category: Structure genomic]]
[[Category: Surp domain]]
[[Category: Surp domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 01:17:10 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:09:21 2008''

Revision as of 13:09, 28 July 2008

Image:2dt7.png

Template:STRUCTURE 2dt7

Solution structure of the second SURP domain of human splicing factor SF3a120 in complex with a fragment of human splicing factor SF3a60

Template:ABSTRACT PUBMED 17098193

About this Structure

2DT7 is a Protein complex structure of sequences from Homo sapiens. Full experimental information is available from OCA.

Reference

Solution structures of the SURP domains and the subunit-assembly mechanism within the splicing factor SF3a complex in 17S U2 snRNP., Kuwasako K, He F, Inoue M, Tanaka A, Sugano S, Guntert P, Muto Y, Yokoyama S, Structure. 2006 Nov;14(11):1677-89. PMID:17098193

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