1ryr

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[[Image:1ryr.png|left|200px]]
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==REPLICATION OF A CIS-SYN THYMINE DIMER AT ATOMIC RESOLUTION==
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<StructureSection load='1ryr' size='340' side='right' caption='[[1ryr]], [[Resolution|resolution]] 2.28&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1ryr]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Sulfolobus_solfataricus Sulfolobus solfataricus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1pm0 1pm0]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RYR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RYR FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene><br>
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<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1rys|1rys]]</td></tr>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">DPO4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2287 Sulfolobus solfataricus])</td></tr>
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<tr><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><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ryr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ryr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1ryr RCSB], [http://www.ebi.ac.uk/pdbsum/1ryr PDBsum]</span></td></tr>
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<table>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ry/1ryr_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Ultraviolet light damages DNA by catalysing covalent bond formation between adjacent pyrimidines, generating cis-syn cyclobutane pyrimidine dimers (CPDs) as the most common lesion. CPDs block DNA replication by high-fidelity DNA polymerases, but they can be efficiently bypassed by the Y-family DNA polymerase pol eta. Mutations in POLH encoding pol eta are implicated in nearly 20% of xeroderma pigmentosum, a human disease characterized by extreme sensitivity to sunlight and predisposition to skin cancer. Here we have determined two crystal structures of Dpo4, an archaeal pol eta homologue, complexed with CPD-containing DNA, where the 3' and 5' thymine of the CPD separately serves as a templating base. The 3' thymine of the CPD forms a Watson-Crick base pair with the incoming dideoxyATP, but the 5' thymine forms a Hoogsteen base pair with the dideoxyATP in syn conformation. Dpo4 retains a similar tertiary structure, but each unusual DNA structure is individually fitted into the active site for catalysis. A model of the pol eta-CPD complex built from the crystal structures of Saccharomyces cerevisiae apo-pol eta and the Dpo4-CPD complex suggests unique features that allow pol eta to efficiently bypass CPDs.
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{{STRUCTURE_1ryr| PDB=1ryr | SCENE= }}
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Replication of a cis-syn thymine dimer at atomic resolution.,Ling H, Boudsocq F, Plosky BS, Woodgate R, Yang W Nature. 2003 Aug 28;424(6952):1083-7. Epub 2003 Aug 6. PMID:12904819<ref>PMID:12904819</ref>
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===REPLICATION OF A CIS-SYN THYMINE DIMER AT ATOMIC RESOLUTION===
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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_12904819}}
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==About this Structure==
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[[1ryr]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Sulfolobus_solfataricus Sulfolobus solfataricus]. This structure supersedes the now removed PDB entry [http://oca.weizmann.ac.il/oca-bin/send-pdb?obs=1&id=1pm0 1pm0]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RYR 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:012904819</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: Sulfolobus solfataricus]]
[[Category: Sulfolobus solfataricus]]

Revision as of 23:38, 28 September 2014

REPLICATION OF A CIS-SYN THYMINE DIMER AT ATOMIC RESOLUTION

1ryr, resolution 2.28Å

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