2rgr

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[[Image:2rgr.png|left|200px]]
 
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==Topoisomerase IIA bound to G-segment DNA==
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The line below this paragraph, containing "STRUCTURE_2rgr", creates the "Structure Box" on the page.
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<StructureSection load='2rgr' size='340' side='right'caption='[[2rgr]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[2rgr]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2RGR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2RGR FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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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]] 3&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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{{STRUCTURE_2rgr| PDB=2rgr | SCENE= }}
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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=2rgr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2rgr OCA], [https://pdbe.org/2rgr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2rgr RCSB], [https://www.ebi.ac.uk/pdbsum/2rgr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2rgr ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/TOP2_YEAST TOP2_YEAST] Control of topological states of DNA by transient breakage and subsequent rejoining of DNA strands. Topoisomerase II makes double-strand breaks. Essential during mitosis and meiosis for proper segregation of daughter chromosomes.<ref>PMID:9685374</ref> <ref>PMID:23022727</ref>
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== Evolutionary Conservation ==
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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/rg/2rgr_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=2rgr 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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Type II topoisomerases disentangle DNA to facilitate chromosome segregation, and represent a major class of therapeutic targets. Although these enzymes have been studied extensively, a molecular understanding of DNA binding has been lacking. Here we present the structure of a complex between the DNA-binding and cleavage core of Saccharomyces cerevisiae Topo II (also known as Top2) and a gate-DNA segment. The structure reveals that the enzyme enforces a 150 degrees DNA bend through a mechanism similar to that of remodelling proteins such as integration host factor. Large protein conformational changes accompany DNA deformation, creating a bipartite catalytic site that positions the DNA backbone near a reactive tyrosine and a coordinated magnesium ion. This configuration closely resembles the catalytic site of type IA topoisomerases, reinforcing an evolutionary link between these structurally and functionally distinct enzymes. Binding of DNA facilitates opening of an enzyme dimerization interface, providing visual evidence for a key step in DNA transport.
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===Topoisomerase IIA bound to G-segment DNA===
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Structural basis for gate-DNA recognition and bending by type IIA topoisomerases.,Dong KC, Berger JM Nature. 2007 Dec 20;450(7173):1201-5. PMID:18097402<ref>PMID:18097402</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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The line below this paragraph, {{ABSTRACT_PUBMED_18097402}}, adds the Publication Abstract to the page
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<div class="pdbe-citations 2rgr" style="background-color:#fffaf0;"></div>
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(as it appears on PubMed at http://www.pubmed.gov), where 18097402 is the PubMed ID number.
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{{ABSTRACT_PUBMED_18097402}}
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==About this Structure==
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[[2rgr]] is a 3 chain structure of [[Topoisomerase]] 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=2RGR OCA].
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==See Also==
==See Also==
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*[[Topoisomerase]]
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*[[Topoisomerase 3D structures|Topoisomerase 3D structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:18097402</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Berger, J M.]]
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[[Category: Berger JM]]
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[[Category: Dong, K C.]]
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[[Category: Dong KC]]
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[[Category: Atp-binding]]
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[[Category: Dna-binding]]
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[[Category: Isomerase]]
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[[Category: Isomerase/dna complex]]
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[[Category: Nucleotide-binding]]
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[[Category: Nucleus]]
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[[Category: Phosphoprotein]]
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[[Category: Protein-dna complex]]
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[[Category: Topoisomerase]]
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Current revision

Topoisomerase IIA bound to G-segment DNA

PDB ID 2rgr

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