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6c2s

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Current revision (14:25, 13 March 2024) (edit) (undo)
 
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==Transcriptional repressor, CouR, bound to a 23-mer DNA duplex==
==Transcriptional repressor, CouR, bound to a 23-mer DNA duplex==
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<StructureSection load='6c2s' size='340' side='right' caption='[[6c2s]], [[Resolution|resolution]] 2.85&Aring;' scene=''>
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<StructureSection load='6c2s' size='340' side='right'caption='[[6c2s]], [[Resolution|resolution]] 2.85&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[6c2s]] is a 8 chain structure with sequence from [http://en.wikipedia.org/wiki/Rhopa Rhopa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6C2S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6C2S FirstGlance]. <br>
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<table><tr><td colspan='2'>[[6c2s]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Rhodopseudomonas_palustris Rhodopseudomonas palustris] and [https://en.wikipedia.org/wiki/Rhodopseudomonas_palustris_CGA009 Rhodopseudomonas palustris CGA009]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6C2S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6C2S FirstGlance]. <br>
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</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RPA1794 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=258594 RHOPA])</td></tr>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.85&#8491;</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=6c2s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6c2s OCA], [http://pdbe.org/6c2s PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6c2s RCSB], [http://www.ebi.ac.uk/pdbsum/6c2s PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6c2s ProSAT]</span></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6c2s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6c2s OCA], [https://pdbe.org/6c2s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6c2s RCSB], [https://www.ebi.ac.uk/pdbsum/6c2s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6c2s ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/Q6N8V9_RHOPA Q6N8V9_RHOPA]
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The MarR-family transcriptional regulator CouR, from the soil bacterium Rhodopseudomonas palustris CGA009, has recently been shown to negatively regulate a p-coumarate catabolic operon. Unlike most characterized MarR repressors that respond to small metabolites at concentrations in the millimolar range, repression by CouR is alleviated by the 800 Da ligand p-coumaroyl-CoA with high affinity and specificity. Here we report the crystal structures of ligand free CouR as well as the complex with p-coumaroyl-CoA, each to 2.1 A resolution, and the 2.85 A resolution cocrystal structure of CouR bound to an oligonucleotide bearing the cognate DNA operator sequence. In combination with binding experiments which uncover specific residues important for ligand and DNA recognition, these structures provide glimpses of a MarR family repressor in all possible states, allowing for an understanding for the molecular basis of DNA binding and the conformation alterations that accompany ligand-induced dissociation for activation of the operon.
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Structural basis of transcriptional regulation by CouR, a repressor of coumarate catabolism in Rhodopseudomonas palustris.,Cogan DP, Baraquet C, Harwood CS, Nair SK J Biol Chem. 2018 May 23. pii: RA118.003561. doi: 10.1074/jbc.RA118.003561. PMID:29794028<ref>PMID:29794028</ref>
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==See Also==
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*[[Transcriptional activator 3D structures|Transcriptional activator 3D structures]]
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 6c2s" style="background-color:#fffaf0;"></div>
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Rhopa]]
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[[Category: Large Structures]]
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[[Category: Cogan, D P]]
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[[Category: Rhodopseudomonas palustris]]
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[[Category: Nair, S K]]
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[[Category: Rhodopseudomonas palustris CGA009]]
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[[Category: Dna binding protein]]
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[[Category: Cogan DP]]
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[[Category: Dna binding protein-dna complex]]
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[[Category: Nair SK]]
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[[Category: Marr family]]
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[[Category: Repressor]]
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[[Category: Transcriptional regulation]]
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Current revision

Transcriptional repressor, CouR, bound to a 23-mer DNA duplex

PDB ID 6c2s

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