2d7d

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[[Image:2d7d.gif|left|200px]]
 
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==Structural insights into the cryptic DNA dependent ATP-ase activity of UvrB==
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The line below this paragraph, containing "STRUCTURE_2d7d", creates the "Structure Box" on the page.
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<StructureSection load='2d7d' size='340' side='right'caption='[[2d7d]], [[Resolution|resolution]] 2.10&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'>[[2d7d]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2D7D OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2D7D 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]] 2.1&#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=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></td></tr>
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{{STRUCTURE_2d7d| PDB=2d7d | 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=2d7d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2d7d OCA], [https://pdbe.org/2d7d PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2d7d RCSB], [https://www.ebi.ac.uk/pdbsum/2d7d PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2d7d ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/UVRB_BACSU UVRB_BACSU] The UvrABC repair system catalyzes the recognition and processing of DNA lesions. A damage recognition complex composed of 2 UvrA and 2 UvrB subunits scans DNA for abnormalities. Upon binding of the UvrA(2)B(2) complex to a putative damaged site, the DNA wraps around one UvrB monomer. DNA wrap is dependent on ATP binding by UvrB and probably causes local melting of the DNA helix, facilitating insertion of UvrB beta-hairpin between the DNA strands. Then UvrB probes one DNA strand for the presence of a lesion. If a lesion is found the UvrA subunits dissociate and the UvrB-DNA preincision complex is formed. This complex is subsequently bound by UvrC and the second UvrB is released. If no lesion is found, the DNA wraps around the other UvrB subunit that will check the other stand for damage (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/d7/2d7d_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=2d7d 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 UvrABC pathway is a ubiquitously occurring mechanism targeted towards the repair of bulky base damage. Key to this process is UvrB, a DNA-dependent limited helicase that acts as a lesion recognition element whilst part of a tracking complex involving UvrA, and as a DNA-binding platform required for the presentation of damage to UvrC for subsequent processing. We have been able to determine the structure of a ternary complex involving UvrB* (a C-terminal truncation of full-length UvrB), a polythymine trinucleotide and ADP. This structure has highlighted the roles of key conserved residues in DNA binding distinct from those of the beta-hairpin, where most of the attention in previous studies has been focussed. We are also the first to report the structural basis underlying conformational re-modelling of the beta-hairpin that is absolutely required for DNA binding and how this event results in an ATPase primed for catalysis. Our data provide the first insights at the molecular level into the transformation of UvrB into an active helicase.
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'''Structural insights into the cryptic DNA dependent ATP-ase activity of UvrB'''
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Structural insights into the cryptic DNA-dependent ATPase activity of UvrB.,Eryilmaz J, Ceschini S, Ryan J, Geddes S, Waters TR, Barrett TE J Mol Biol. 2006 Mar 17;357(1):62-72. Epub 2006 Jan 6. PMID:16426634<ref>PMID:16426634</ref>
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==Overview==
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The UvrABC pathway is a ubiquitously occurring mechanism targeted towards the repair of bulky base damage. Key to this process is UvrB, a DNA-dependent limited helicase that acts as a lesion recognition element whilst part of a tracking complex involving UvrA, and as a DNA-binding platform required for the presentation of damage to UvrC for subsequent processing. We have been able to determine the structure of a ternary complex involving UvrB* (a C-terminal truncation of full-length UvrB), a polythymine trinucleotide and ADP. This structure has highlighted the roles of key conserved residues in DNA binding distinct from those of the beta-hairpin, where most of the attention in previous studies has been focussed. We are also the first to report the structural basis underlying conformational re-modelling of the beta-hairpin that is absolutely required for DNA binding and how this event results in an ATPase primed for catalysis. Our data provide the first insights at the molecular level into the transformation of UvrB into an active helicase.
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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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2D7D is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2D7D OCA].
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</div>
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<div class="pdbe-citations 2d7d" style="background-color:#fffaf0;"></div>
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==Reference==
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==See Also==
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Structural insights into the cryptic DNA-dependent ATPase activity of UvrB., Eryilmaz J, Ceschini S, Ryan J, Geddes S, Waters TR, Barrett TE, J Mol Biol. 2006 Mar 17;357(1):62-72. Epub 2006 Jan 6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16426634 16426634]
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*[[UvrABC|UvrABC]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Bacillus subtilis]]
[[Category: Bacillus subtilis]]
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[[Category: Protein complex]]
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[[Category: Large Structures]]
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[[Category: Barrett, T E.]]
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[[Category: Barrett TE]]
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[[Category: Helicase]]
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[[Category: Protein-dna-adp ternary complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 23:48:06 2008''
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Current revision

Structural insights into the cryptic DNA dependent ATP-ase activity of UvrB

PDB ID 2d7d

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