3nfq

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{{STRUCTURE_3nfq| PDB=3nfq | SCENE= }}
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==Crystal structure of the conserved central domain of yeast Spn1/Iws1==
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===Crystal structure of the conserved central domain of yeast Spn1/Iws1===
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<StructureSection load='3nfq' size='340' side='right' caption='[[3nfq]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
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{{ABSTRACT_PUBMED_20875428}}
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3nfq]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NFQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3NFQ FirstGlance]. <br>
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</td></tr><tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">IWS1, SPN1, YPR133C ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3nfq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3nfq OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3nfq RCSB], [http://www.ebi.ac.uk/pdbsum/3nfq PDBsum]</span></td></tr>
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</table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Spn1 plays essential roles in the regulation of gene expression by RNA polymerase II (RNAPII), and it is highly conserved in organisms ranging from yeast to humans. Spn1 physically and/or genetically interacts with RNAPII, TBP (TATA-binding protein), TFIIS (transcription factor IIS), and a number of chromatin remodeling factors (Swi-Snf and Spt6). The central domain of Spn1 (residues 141-305 out of 410) is necessary and sufficient for performing the essential functions of SPN1 in yeast cells. Here, we report the high-resolution (1.85 A) crystal structure of the conserved central domain of Saccharomyces cerevisiae Spn1. The central domain is composed of eight alpha-helices in a right-handed superhelical arrangement and exhibits structural similarity to domain I of TFIIS. A unique structural feature of Spn1 is a highly conserved loop, which defines one side of a pronounced cavity. The loop and the other residues forming the cavity are highly conserved at the amino acid level among all Spn1 family members, suggesting that this is a signature motif for Spn1 orthologs. The locations and the molecular characterization of temperature-sensitive mutations in Spn1 indicate that the cavity is a key attribute of Spn1 that is critical for its regulatory functions during RNAPII-mediated transcriptional activity.
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==Function==
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The Transcription Factor Spn1 Regulates Gene Expression via a Highly Conserved Novel Structural Motif.,Pujari V, Radebaugh CA, Chodaparambil JV, Muthurajan UM, Almeida AR, Fischbeck JA, Luger K, Stargell LA J Mol Biol. 2010 Sep 25. PMID:20875428<ref>PMID:20875428</ref>
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[[http://www.uniprot.org/uniprot/IWS1_YEAST IWS1_YEAST]] Transcription factor involved in RNA polymerase II transcription regulation. May function in both SPT15/TBP post-recruitment and recruitment steps of transcription.<ref>PMID:12524336</ref> <ref>PMID:12556496</ref>
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==About this Structure==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[3nfq]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3NFQ OCA].
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</div>
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:020875428</ref><references group="xtra"/><references/>
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__TOC__
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</StructureSection>
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Luger, K.]]
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[[Category: Luger, K]]
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[[Category: Stargell, L A.]]
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[[Category: Stargell, L A]]
[[Category: Rna polymerase ii]]
[[Category: Rna polymerase ii]]
[[Category: Spn1]]
[[Category: Spn1]]
[[Category: Transcription]]
[[Category: Transcription]]

Revision as of 18:00, 18 December 2014

Crystal structure of the conserved central domain of yeast Spn1/Iws1

3nfq, resolution 1.85Å

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