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3crx

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[[Image:3crx.gif|left|200px]]
 
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==CRE RECOMBINASE/DNA COMPLEX INTERMEDIATE I==
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The line below this paragraph, containing "STRUCTURE_3crx", creates the "Structure Box" on the page.
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<StructureSection load='3crx' size='340' side='right'caption='[[3crx]], [[Resolution|resolution]] 2.50&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'>[[3crx]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_virus_P1 Escherichia virus P1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CRX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3CRX 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]] 2.5&#8491;</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=3crx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3crx OCA], [https://pdbe.org/3crx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3crx RCSB], [https://www.ebi.ac.uk/pdbsum/3crx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3crx ProSAT]</span></td></tr>
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{{STRUCTURE_3crx| PDB=3crx | SCENE= }}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RECR_BPP1 RECR_BPP1] Catalyzes site-specific recombination between two 34-base-pair LOXP sites. Its role is to maintain the phage genome as a monomeric unit-copy plasmid in the lysogenic state.
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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/cr/3crx_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=3crx 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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We have determined the X-ray crystal structures of two DNA Holliday junctions (HJs) bound by Cre recombinase. The HJ is a four-way branched structure that occurs as an intermediate in genetic recombination pathways, including site-specific recombination by the lambda-integrase family. Cre recombinase is an integrase family member that recombines 34 bp loxP sites in the absence of accessory proteins or auxiliary DNA sequences. The 2.7 A structure of Cre recombinase bound to an immobile HJ and the 2.5 A structure of Cre recombinase bound to a symmetric, nicked HJ reveal a nearly planar, twofold-symmetric DNA intermediate that shares features with both the stacked-X and the square conformations of the HJ that exist in the unbound state. The structures support a protein-mediated crossover isomerization of the junction that acts as the switch responsible for activation and deactivation of recombinase active sites. In this model, a subtle isomerization of the Cre recombinase-HJ quaternary structure dictates which strands are cleaved during resolution of the junction via a mechanism that involves neither branch migration nor helical restacking.
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'''CRE RECOMBINASE/DNA COMPLEX INTERMEDIATE I'''
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Structure of the Holliday junction intermediate in Cre-loxP site-specific recombination.,Gopaul DN, Guo F, Van Duyne GD EMBO J. 1998 Jul 15;17(14):4175-87. PMID:9670032<ref>PMID:9670032</ref>
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==Overview==
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We have determined the X-ray crystal structures of two DNA Holliday junctions (HJs) bound by Cre recombinase. The HJ is a four-way branched structure that occurs as an intermediate in genetic recombination pathways, including site-specific recombination by the lambda-integrase family. Cre recombinase is an integrase family member that recombines 34 bp loxP sites in the absence of accessory proteins or auxiliary DNA sequences. The 2.7 A structure of Cre recombinase bound to an immobile HJ and the 2.5 A structure of Cre recombinase bound to a symmetric, nicked HJ reveal a nearly planar, twofold-symmetric DNA intermediate that shares features with both the stacked-X and the square conformations of the HJ that exist in the unbound state. The structures support a protein-mediated crossover isomerization of the junction that acts as the switch responsible for activation and deactivation of recombinase active sites. In this model, a subtle isomerization of the Cre recombinase-HJ quaternary structure dictates which strands are cleaved during resolution of the junction via a mechanism that involves neither branch migration nor helical restacking.
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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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3CRX is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Enterobacteria_phage_p1 Enterobacteria phage p1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CRX OCA].
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</div>
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<div class="pdbe-citations 3crx" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Structure of the Holliday junction intermediate in Cre-loxP site-specific recombination., Gopaul DN, Guo F, Van Duyne GD, EMBO J. 1998 Jul 15;17(14):4175-87. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/9670032 9670032]
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*[[Resolvase 3D structures|Resolvase 3D structures]]
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[[Category: Enterobacteria phage p1]]
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== References ==
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[[Category: Single protein]]
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<references/>
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[[Category: Gopaul, D N.]]
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__TOC__
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[[Category: Guo, F.]]
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</StructureSection>
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[[Category: Vanduyne, G D.]]
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[[Category: Escherichia virus P1]]
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[[Category: Cre recombinase]]
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[[Category: Large Structures]]
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[[Category: Holliday junction]]
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[[Category: Gopaul DN]]
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[[Category: Recombinase/dna complex]]
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[[Category: Guo F]]
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[[Category: Recombination]]
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[[Category: Vanduyne GD]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 21:58:29 2008''
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CRE RECOMBINASE/DNA COMPLEX INTERMEDIATE I

PDB ID 3crx

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