View source for 2ok0


==Fab ED10-DNA complex==
<StructureSection load='2ok0' size='340' side='right' caption='[[2ok0]], [[Resolution|resolution]] 1.89&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2ok0]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2OK0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2OK0 FirstGlance]. <br>
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2ojz|2ojz]]</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ok0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ok0 OCA], [http://pdbe.org/2ok0 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ok0 RCSB], [http://www.ebi.ac.uk/pdbsum/2ok0 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2ok0 ProSAT]</span></td></tr>
</table>
== 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/ok/2ok0_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=2ok0 ConSurf].
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== Publication Abstract from PubMed ==
DNA recognition by antibodies is a key feature of autoimmune diseases, yet model systems with structural information are very limited. The monoclonal antibody ED-10 recognizes one of the strands of the DNA duplex used in the immunogenic complex. Modifications of the 5' end decrease the binding affinity and short oligonucleotides retain high binding affinity. We determined crystal structures for the Fab bound to a 6-mer oligonucleotide containing the specific sequence that raised the antibody and compared it with the unliganded Fab. Only the first two bases from the 5' end (dTdC) display electron density and we observe four key hydrogen bonds at the interface. The thymine ring is stacked between TrpH50 and TrpH95, and the cytosine ring is packed against TyrL32. Upon DNA binding, TyrH97 and TrpH95 rearrange to allow subnanomolar binding affinity, five orders of magnitude higher than other reported complexes, possibly because of having gone through affinity maturation. This structure represents the first bona fide antibody DNA immunogen complex described in atomic detail.

Specific recognition of a DNA immunogen by its elicited antibody.,Sanguineti S, Centeno Crowley JM, Lodeiro Merlo MF, Cerutti ML, Wilson IA, Goldbaum FA, Stanfield RL, de Prat-Gay G J Mol Biol. 2007 Jun 29;370(1):183-95. Epub 2007 Apr 24. PMID:17512945<ref>PMID:17512945</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2ok0" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Mus musculus]]
[[Category: Prat-Gay, G de]]
[[Category: Sanguineti, S]]
[[Category: Stanfield, R L]]
[[Category: Wilson, I A]]
[[Category: Immune system-dna complex]]
[[Category: Immunoglobulin fold]]