1rio

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[[Image:1rio.gif|left|200px]]
 
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{{Structure
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==Structure of bacteriophage lambda cI-NTD in complex with sigma-region4 of Thermus aquaticus bound to DNA==
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|PDB= 1rio |SIZE=350|CAPTION= <scene name='initialview01'>1rio</scene>, resolution 2.30&Aring;
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<StructureSection load='1rio' size='340' side='right'caption='[[1rio]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DA:2&#39;-DEOXYADENOSINE-5&#39;-MONOPHOSPHATE'>DA</scene>, <scene name='pdbligand=DC:2&#39;-DEOXYCYTIDINE-5&#39;-MONOPHOSPHATE'>DC</scene>, <scene name='pdbligand=DG:2&#39;-DEOXYGUANOSINE-5&#39;-MONOPHOSPHATE'>DG</scene>, <scene name='pdbligand=DT:THYMIDINE-5&#39;-MONOPHOSPHATE'>DT</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>
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<table><tr><td colspan='2'>[[1rio]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_virus_Lambda Escherichia virus Lambda] and [https://en.wikipedia.org/wiki/Thermus_aquaticus Thermus aquaticus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RIO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RIO FirstGlance]. <br>
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|ACTIVITY=
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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]] 2.3&#8491;</td></tr>
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|GENE= CI ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10710 Enterobacteria phage lambda])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
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|DOMAIN=
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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=1rio FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rio OCA], [https://pdbe.org/1rio PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rio RCSB], [https://www.ebi.ac.uk/pdbsum/1rio PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rio ProSAT]</span></td></tr>
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|RELATEDENTRY=[[1ku7|1KU7]], [[1lmb|1LMB]]
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</table>
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1rio FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rio OCA], [http://www.ebi.ac.uk/pdbsum/1rio PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1rio RCSB]</span>
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== Evolutionary Conservation ==
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}}
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ri/1rio_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1rio ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The cI protein of bacteriophage lambda (lambdacI) activates transcription by binding a DNA operator just upstream of the promoter and interacting with the RNA polymerase sigma subunit domain 4 (sigma(4)). We determined the crystal structure of the lambdacI/sigma(4)/DNA ternary complex at 2.3 A resolution. There are no conformational changes in either protein, which interact through an extremely small interface involving at most 6 amino acid residues. The interactions of the two proteins stabilize the binding of each protein to the DNA. The results provide insight into how activators can operate through a simple cooperative binding mechanism but affect different steps of the transcription initiation process.
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'''Structure of bacteriophage lambda cI-NTD in complex with sigma-region4 of Thermus aquaticus bound to DNA'''
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Structure of a ternary transcription activation complex.,Jain D, Nickels BE, Sun L, Hochschild A, Darst SA Mol Cell. 2004 Jan 16;13(1):45-53. PMID:14731393<ref>PMID:14731393</ref>
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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 1rio" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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The cI protein of bacteriophage lambda (lambdacI) activates transcription by binding a DNA operator just upstream of the promoter and interacting with the RNA polymerase sigma subunit domain 4 (sigma(4)). We determined the crystal structure of the lambdacI/sigma(4)/DNA ternary complex at 2.3 A resolution. There are no conformational changes in either protein, which interact through an extremely small interface involving at most 6 amino acid residues. The interactions of the two proteins stabilize the binding of each protein to the DNA. The results provide insight into how activators can operate through a simple cooperative binding mechanism but affect different steps of the transcription initiation process.
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*[[Sigma factor 3D structures|Sigma factor 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1RIO is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Enterobacteria_phage_lambda Enterobacteria phage lambda] and [http://en.wikipedia.org/wiki/Thermus_aquaticus Thermus aquaticus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RIO OCA].
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__TOC__
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</StructureSection>
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==Reference==
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[[Category: Escherichia virus Lambda]]
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Structure of a ternary transcription activation complex., Jain D, Nickels BE, Sun L, Hochschild A, Darst SA, Mol Cell. 2004 Jan 16;13(1):45-53. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14731393 14731393]
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[[Category: Large Structures]]
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[[Category: Enterobacteria phage lambda]]
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[[Category: Protein complex]]
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[[Category: Thermus aquaticus]]
[[Category: Thermus aquaticus]]
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[[Category: Darst, S A.]]
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[[Category: Darst SA]]
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[[Category: Hochschild, A.]]
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[[Category: Hochschild A]]
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[[Category: Jain, D.]]
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[[Category: Jain D]]
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[[Category: Nickels, B E.]]
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[[Category: Nickels BE]]
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[[Category: Sun, L.]]
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[[Category: Sun L]]
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[[Category: helix-turn-helix]]
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[[Category: transcription activation]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 23:28:40 2008''
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Current revision

Structure of bacteriophage lambda cI-NTD in complex with sigma-region4 of Thermus aquaticus bound to DNA

PDB ID 1rio

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