3lqc: Difference between revisions

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[[Image:3lqc.jpg|left|200px]]


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==X-ray crystal structure of oxidized XRCC1 bound to DNA pol beta Palm thumb domain==
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<StructureSection load='3lqc' size='340' side='right'caption='[[3lqc]], [[Resolution|resolution]] 2.35&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[3lqc]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3LQC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3LQC FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.349&#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=CO3:CARBONATE+ION'>CO3</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
{{STRUCTURE_3lqc|  PDB=3lqc  |  SCENE=  }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3lqc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3lqc OCA], [https://pdbe.org/3lqc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3lqc RCSB], [https://www.ebi.ac.uk/pdbsum/3lqc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3lqc ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/XRCC1_HUMAN XRCC1_HUMAN] Corrects defective DNA strand-break repair and sister chromatid exchange following treatment with ionizing radiation and alkylating agents.
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lq/3lqc_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=3lqc ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Formation of a complex between the XRCC1 N-terminal domain (NTD) and DNA polymerase beta (Pol beta) is central to base excision repair of damaged DNA. Two crystal forms of XRCC1-NTD complexed with Pol beta have been solved, revealing that the XRCC1-NTD is able to adopt a redox-dependent alternate fold, characterized by a disulfide bond, and substantial variations of secondary structure, folding topology, and electrostatic surface. Although most of these structural changes occur distal to the interface, the oxidized XRCC1-NTD forms additional interactions with Pol beta, enhancing affinity by an order of magnitude. Transient disulfide bond formation is increasingly recognized as an important molecular regulatory mechanism. The results presented here suggest a paradigm in DNA repair in which the redox state of a scaffolding protein plays an active role in organizing the repair complex.


===X-ray crystal structure of oxidized XRCC1 bound to DNA pol beta Palm thumb domain===
Oxidation state of the XRCC1 N-terminal domain regulates DNA polymerase beta binding affinity.,Cuneo MJ, London RE Proc Natl Acad Sci U S A. 2010 Apr 13;107(15):6805-10. Epub 2010 Mar 29. PMID:20351257<ref>PMID:20351257</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3lqc" style="background-color:#fffaf0;"></div>


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==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_20351257}}, adds the Publication Abstract to the page
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 20351257 is the PubMed ID number.
*[[DNA polymerase beta|DNA polymerase beta]]
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== References ==
{{ABSTRACT_PUBMED_20351257}}
<references/>
 
__TOC__
==About this Structure==
</StructureSection>
3LQC is a 2 chains structure with sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3LQC OCA].
 
==Reference==
<ref group="xtra">PMID:20351257</ref><references group="xtra"/>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
[[Category: Cuneo, M J.]]
[[Category: Cuneo MJ]]
[[Category: Krahn, J M.]]
[[Category: Krahn JM]]
[[Category: London, R E.]]
[[Category: London RE]]
[[Category: Allosteric disulfide]]
[[Category: Dna damage]]
[[Category: Dna repair]]
[[Category: Dna replication]]
[[Category: Dna synthesis]]
[[Category: Dna-binding]]
[[Category: Dna-binding protein]]
[[Category: Dna-directed dna polymerase]]
[[Category: Lyase]]
[[Category: Magnesium]]
[[Category: Metal-binding]]
[[Category: Nucleotidyltransferase]]
[[Category: Nucleus]]
[[Category: Phosphoprotein]]
[[Category: Polymorphism]]
[[Category: Scaffolding protein]]
[[Category: Sodium]]
[[Category: Transferase]]
 
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