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==Crystal structure of uracil-DNA glycosylase in complex with AP:G containing DNA==
==Crystal structure of uracil-DNA glycosylase in complex with AP:G containing DNA==
<StructureSection load='2ddg' size='340' side='right' caption='[[2ddg]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
<StructureSection load='2ddg' size='340' side='right'caption='[[2ddg]], [[Resolution|resolution]] 2.10&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[2ddg]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Thet8 Thet8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DDG OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2DDG FirstGlance]. <br>
<table><tr><td colspan='2'>[[2ddg]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DDG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2DDG FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=2HP:DIHYDROGENPHOSPHATE+ION'>2HP</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=ORP:2-DEOXY-5-PHOSPHONO-RIBOSE'>ORP</scene></td></tr>
</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>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2d3y|2d3y]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2HP:DIHYDROGENPHOSPHATE+ION'>2HP</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=EOH:ETHANOL'>EOH</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=ORP:2-DEOXY-5-PHOSPHONO-RIBOSE'>ORP</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ttUDGB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=300852 THET8])</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=2ddg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ddg OCA], [https://pdbe.org/2ddg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ddg RCSB], [https://www.ebi.ac.uk/pdbsum/2ddg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ddg ProSAT], [https://www.topsan.org/Proteins/RSGI/2ddg TOPSAN]</span></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=2ddg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ddg OCA], [http://pdbe.org/2ddg PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2ddg RCSB], [http://www.ebi.ac.uk/pdbsum/2ddg PDBsum], [http://www.topsan.org/Proteins/RSGI/2ddg TOPSAN]</span></td></tr>
</table>
</table>
== Function ==
[https://www.uniprot.org/uniprot/UDGB_THET8 UDGB_THET8] DNA glycosylase with broad substrate specificity. Can remove uracil from double-stranded DNA containing either a U/G, U/A, U/C or U/T base pair (PubMed:12000829, PubMed:17870091, PubMed:24838246). Can also excise hypoxanthine from double-stranded DNA containing G/I, T/I, and A/I base pairs, xanthine from both double-stranded and single stranded DNA, thymine from G/T mismatched DNA, 5'-hydroxymethyluracil and 5'-fluorouracil (PubMed:17870091, PubMed:24838246).<ref>PMID:12000829</ref> <ref>PMID:17870091</ref> <ref>PMID:24838246</ref>
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dd/2ddg_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/dd/2ddg_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </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/chain_selection.php?pdb_ID=2ata ConSurf].
</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=2ddg ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Uracil-DNA glycosylase (UDG) removes uracil generated by the deamination of cytosine or misincorporation of deoxyuridine monophosphate. Within the UDG superfamily, a fifth UDG family lacks a polar residue in the active-site motif, which mediates the hydrolysis of the glycosidic bond by activation of a water molecule in UDG families 1-4. We have determined the crystal structure of a novel family 5 UDG from Thermus thermophilus HB8 complexed with DNA containing an abasic site. The active-site structure suggests this enzyme uses both steric force and water activation for its excision reaction. A conserved asparagine residue acts as a ligand to the catalytic water molecule. The structure also implies that another water molecule acts as a barrier during substrate recognition. Based on no significant open-closed conformational change upon binding to DNA, we propose a "slide-in" mechanism for initial damage recognition.
Crystal structure of family 5 uracil-DNA glycosylase bound to DNA.,Kosaka H, Hoseki J, Nakagawa N, Kuramitsu S, Masui R J Mol Biol. 2007 Nov 2;373(4):839-50. Epub 2007 Aug 21. PMID:17870091<ref>PMID:17870091</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 2ddg" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[DNA glycosylase|DNA glycosylase]]
*[[DNA glycosylase 3D structures|DNA glycosylase 3D structures]]
*[[Uracil-DNA glycosylase|Uracil-DNA glycosylase]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Thet8]]
[[Category: Large Structures]]
[[Category: Hoseki, J]]
[[Category: Thermus thermophilus HB8]]
[[Category: Kosaka, H]]
[[Category: Hoseki J]]
[[Category: Kuramitsu, S]]
[[Category: Kosaka H]]
[[Category: Masui, R]]
[[Category: Kuramitsu S]]
[[Category: Nakagawa, N]]
[[Category: Masui R]]
[[Category: Structural genomic]]
[[Category: Nakagawa N]]
[[Category: Base excision repair]]
[[Category: Dna complex]]
[[Category: Hydrolase-dna complex]]
[[Category: Iron/sulfer cluster]]
[[Category: National project on protein structural and functional analyse]]
[[Category: Nppsfa]]
[[Category: Rsgi]]
[[Category: Thermophile]]
[[Category: Uracil-dna glycosylase]]

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