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3ohb

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[[Image:3ohb.png|left|200px]]
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==Yeast DNA polymerase eta extending from an 8-oxoG lesion==
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<StructureSection load='3ohb' size='340' side='right' caption='[[3ohb]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3ohb]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OHB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3OHB FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DCP:2-DEOXYCYTIDINE-5-TRIPHOSPHATE'>DCP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=8OG:8-OXO-2-DEOXY-GUANOSINE-5-MONOPHOSPHATE'>8OG</scene>, <scene name='pdbligand=DOC:2,3-DIDEOXYCYTIDINE-5-MONOPHOSPHATE'>DOC</scene></td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1jih|1jih]], [[3mfh|3mfh]], [[3mfi|3mfi]], [[3oha|3oha]]</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">DBH1, RAD30, YDR419W ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae])</td></tr>
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<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.7 2.7.7.7] </span></td></tr>
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<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=3ohb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ohb OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3ohb RCSB], [http://www.ebi.ac.uk/pdbsum/3ohb PDBsum]</span></td></tr>
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</table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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7,8-dihydro-8-oxoguanine (8-oxoG) adducts are formed frequently by the attack of oxygen-free radicals on DNA. They are among the most mutagenic lesions in cells because of their dual coding potential, where, in addition to normal base-pairing of 8-oxoG(anti) with dCTP, 8-oxoG in the syn conformation can base pair with dATP, causing G to T transversions. We provide here for the first time a structural basis for the error-free replication of 8-oxoG lesions by yeast DNA polymerase eta (Poleta). We show that the open active site cleft of Poleta can accommodate an 8-oxoG lesion in the anti conformation with only minimal changes to the polymerase and the bound DNA: at both the insertion and post-insertion steps of lesion bypass. Importantly, the active site geometry remains the same as in the undamaged complex and provides a basis for the ability of Poleta to prevent the mutagenic replication of 8-oxoG lesions in cells.
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{{STRUCTURE_3ohb| PDB=3ohb | SCENE= }}
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Structural basis for error-free replication of oxidatively damaged DNA by yeast DNA polymerase eta.,Silverstein TD, Jain R, Johnson RE, Prakash L, Prakash S, Aggarwal AK Structure. 2010 Nov 10;18(11):1463-70. PMID:21070945<ref>PMID:21070945</ref>
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===Yeast DNA polymerase eta extending from an 8-oxoG lesion===
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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{{ABSTRACT_PUBMED_21070945}}
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==About this Structure==
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[[3ohb]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3OHB OCA].
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==See Also==
==See Also==
*[[DNA polymerase|DNA polymerase]]
*[[DNA polymerase|DNA polymerase]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:021070945</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: DNA-directed DNA polymerase]]
[[Category: DNA-directed DNA polymerase]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Aggarwal, A K.]]
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[[Category: Aggarwal, A K]]
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[[Category: Jain, R.]]
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[[Category: Jain, R]]
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[[Category: Silverstein, T D.]]
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[[Category: Silverstein, T D]]
[[Category: Dna binding]]
[[Category: Dna binding]]
[[Category: Dna repair]]
[[Category: Dna repair]]

Revision as of 13:43, 9 December 2014

Yeast DNA polymerase eta extending from an 8-oxoG lesion

3ohb, resolution 2.00Å

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