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New page: left|200px<br /><applet load="1vdd" size="450" color="white" frame="true" align="right" spinBox="true" caption="1vdd, resolution 2.50Å" /> '''Crystal structure of...
 
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[[Image:1vdd.gif|left|200px]]<br /><applet load="1vdd" size="450" color="white" frame="true" align="right" spinBox="true"
caption="1vdd, resolution 2.50&Aring;" />
'''Crystal structure of recombinational repair protein RecR'''<br />


==Overview==
==Crystal structure of recombinational repair protein RecR==
RecR, together with RecF and RecO, facilitates RecA loading in the RecF, pathway of homologous recombinational DNA repair in procaryotes. The human, Rad52 protein is a functional counterpart of RecFOR. We present here the, crystal structure of RecR from Deinococcus radiodurans (DR RecR). A, monomer of DR RecR has a two-domain structure: the N-terminal domain with, a helix-hairpin-helix (HhH) motif and the C-terminal domain with a Cys4, zinc-finger motif, a Toprim domain and a Walker B motif. Four such, monomers form a ring-shaped tetramer of 222 symmetry with a central hole, of 30-35 angstroms diameter. In the crystal, two tetramers are, concatenated, implying that the RecR tetramer is capable of opening and, closing. We also show that DR RecR binds to both dsDNA and ssDNA, and that, its HhH motif is essential for DNA binding.
<StructureSection load='1vdd' size='340' side='right'caption='[[1vdd]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1vdd]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans Deinococcus radiodurans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1VDD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1VDD FirstGlance]. <br>
</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>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=IMD:IMIDAZOLE'>IMD</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1vdd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1vdd OCA], [https://pdbe.org/1vdd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1vdd RCSB], [https://www.ebi.ac.uk/pdbsum/1vdd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1vdd ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RECR_DEIRA RECR_DEIRA] May play a role in DNA repair. It seems to be involved in an RecBC-independent recombinational process of DNA repair. It may act with RecF and RecO (By similarity).
== 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/vd/1vdd_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1vdd ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
RecR, together with RecF and RecO, facilitates RecA loading in the RecF pathway of homologous recombinational DNA repair in procaryotes. The human Rad52 protein is a functional counterpart of RecFOR. We present here the crystal structure of RecR from Deinococcus radiodurans (DR RecR). A monomer of DR RecR has a two-domain structure: the N-terminal domain with a helix-hairpin-helix (HhH) motif and the C-terminal domain with a Cys4 zinc-finger motif, a Toprim domain and a Walker B motif. Four such monomers form a ring-shaped tetramer of 222 symmetry with a central hole of 30-35 angstroms diameter. In the crystal, two tetramers are concatenated, implying that the RecR tetramer is capable of opening and closing. We also show that DR RecR binds to both dsDNA and ssDNA, and that its HhH motif is essential for DNA binding.


==About this Structure==
Ring-shaped architecture of RecR: implications for its role in homologous recombinational DNA repair.,Lee BI, Kim KH, Park SJ, Eom SH, Song HK, Suh SW EMBO J. 2004 May 19;23(10):2029-38. Epub 2004 Apr 29. PMID:15116069<ref>PMID:15116069</ref>
1VDD is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Deinococcus_radiodurans Deinococcus radiodurans] with ZN and IMD as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1VDD OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
Ring-shaped architecture of RecR: implications for its role in homologous recombinational DNA repair., Lee BI, Kim KH, Park SJ, Eom SH, Song HK, Suh SW, EMBO J. 2004 May 19;23(10):2029-38. Epub 2004 Apr 29. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15116069 15116069]
</div>
<div class="pdbe-citations 1vdd" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Deinococcus radiodurans]]
[[Category: Deinococcus radiodurans]]
[[Category: Single protein]]
[[Category: Large Structures]]
[[Category: Kim, K.H.]]
[[Category: Kim KH]]
[[Category: Lee, B.I.]]
[[Category: Lee BI]]
[[Category: Suh, S.W.]]
[[Category: Suh SW]]
[[Category: IMD]]
[[Category: ZN]]
[[Category: helix-hairpin-helix]]
[[Category: toprim]]
[[Category: walker b atp binding motif]]
[[Category: zinc finger]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Wed Nov 21 04:36:02 2007''

Latest revision as of 00:36, 21 November 2024

Crystal structure of recombinational repair protein RecR

1vdd, resolution 2.50Å

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