1in4

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[[Image:1in4.gif|left|200px]]
 
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==THERMOTOGA MARITIMA RUVB HOLLIDAY JUNCTION BRANCH MIGRATION MOTOR==
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The line below this paragraph, containing "STRUCTURE_1in4", creates the "Structure Box" on the page.
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<StructureSection load='1in4' size='340' side='right'caption='[[1in4]], [[Resolution|resolution]] 1.60&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'>[[1in4]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IN4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1IN4 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]] 1.6&#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=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene>, <scene name='pdbligand=HEZ:HEXANE-1,6-DIOL'>HEZ</scene></td></tr>
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{{STRUCTURE_1in4| PDB=1in4 | 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=1in4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1in4 OCA], [https://pdbe.org/1in4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1in4 RCSB], [https://www.ebi.ac.uk/pdbsum/1in4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1in4 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RUVB_THEMA RUVB_THEMA] The RuvA-RuvB complex in the presence of ATP renatures cruciform structure in supercoiled DNA with palindromic sequence, indicating that it may promote strand exchange reactions in homologous recombination. RuvAB is a helicase that mediates the Holliday junction migration by localized denaturation and reannealing (By similarity).
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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/in/1in4_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=1in4 ConSurf].
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<div style="clear:both"></div>
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'''THERMOTOGA MARITIMA RUVB HOLLIDAY JUNCTION BRANCH MIGRATION MOTOR'''
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==See Also==
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*[[Helicase 3D structures|Helicase 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The RuvB hexamer is the chemomechanical motor of the RuvAB complex that migrates Holliday junction branch-points in DNA recombination and the rescue of stalled DNA replication forks. The 1.6 A crystal structure of Thermotoga maritima RuvB together with five mutant structures reveal that RuvB is an ATPase-associated with diverse cellular activities (AAA+-class ATPase) with a winged-helix DNA-binding domain. The RuvB-ADP complex structure and mutagenesis suggest how AAA+-class ATPases couple nucleotide binding and hydrolysis to interdomain conformational changes and asymmetry within the RuvB hexamer implied by the crystallographic packing and small-angle X-ray scattering in solution. ATP-driven domain motion is positioned to move double-stranded DNA through the hexamer and drive conformational changes between subunits by altering the complementary hydrophilic protein- protein interfaces. Structural and biochemical analysis of five motifs in the protein suggest that ATP binding is a strained conformation recognized both by sensors and the Walker motifs and that intersubunit activation occurs by an arginine finger motif reminiscent of the GTPase-activating proteins. Taken together, these results provide insights into how RuvB functions as a motor for branch migration of Holliday junctions.
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[[Category: Large Structures]]
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==About this Structure==
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1IN4 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1IN4 OCA].
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==Reference==
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Structure and mechanism of the RuvB Holliday junction branch migration motor., Putnam CD, Clancy SB, Tsuruta H, Gonzalez S, Wetmur JG, Tainer JA, J Mol Biol. 2001 Aug 10;311(2):297-310. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11478862 11478862]
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[[Category: Single protein]]
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[[Category: Thermotoga maritima]]
[[Category: Thermotoga maritima]]
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[[Category: Putnam, C D.]]
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[[Category: Putnam CD]]
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[[Category: Tainer, J A.]]
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[[Category: Tainer JA]]
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[[Category: Aaa+-class atpase]]
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[[Category: Arginine finger]]
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[[Category: Atp hydrolysis]]
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[[Category: Branch migration]]
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[[Category: Dna translocase]]
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[[Category: Holliday junction]]
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[[Category: Sensor 1]]
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[[Category: Sensor 2]]
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[[Category: Walker some]]
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[[Category: Walker b]]
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[[Category: Winged-helix domain]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 20:10:41 2008''
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Current revision

THERMOTOGA MARITIMA RUVB HOLLIDAY JUNCTION BRANCH MIGRATION MOTOR

PDB ID 1in4

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