3gil: Difference between revisions
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3gil]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Sulfolobus_solfataricus_p2 Sulfolobus solfataricus p2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GIL OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3GIL FirstGlance]. <br> | <table><tr><td colspan='2'>[[3gil]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Sulfolobus_solfataricus_p2 Sulfolobus solfataricus p2]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GIL OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3GIL FirstGlance]. <br> | ||
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DGT:2-DEOXYGUANOSINE-5-TRIPHOSPHATE'>DGT</scene>< | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DGT:2-DEOXYGUANOSINE-5-TRIPHOSPHATE'>DGT</scene></td></tr> | ||
<tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=2DT:3-DEOXYTHYMIDINE-5-MONOPHOSPHATE'>2DT</scene>, <scene name='pdbligand=8OG:8-OXO-2-DEOXY-GUANOSINE-5-MONOPHOSPHATE'>8OG</scene></td></tr> | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=2DT:3-DEOXYTHYMIDINE-5-MONOPHOSPHATE'>2DT</scene>, <scene name='pdbligand=8OG:8-OXO-2-DEOXY-GUANOSINE-5-MONOPHOSPHATE'>8OG</scene></td></tr> | ||
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2asd|2asd]], [[2asj|2asj]], [[2asl|2asl]], [[3gii|3gii]], [[3gij|3gij]], [[3gik|3gik]], [[3gim|3gim]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2asd|2asd]], [[2asj|2asj]], [[2asl|2asl]], [[3gii|3gii]], [[3gij|3gij]], [[3gik|3gik]], [[3gim|3gim]]</td></tr> | ||
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dbh, dpo4, SSO2448 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=273057 Sulfolobus solfataricus P2])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dbh, dpo4, SSO2448 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=273057 Sulfolobus solfataricus P2])</td></tr> | ||
<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> | <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> | ||
<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=3gil FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gil OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3gil RCSB], [http://www.ebi.ac.uk/pdbsum/3gil PDBsum]</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=3gil FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gil OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3gil RCSB], [http://www.ebi.ac.uk/pdbsum/3gil PDBsum]</span></td></tr> | ||
<table> | </table> | ||
== Function == | |||
[[http://www.uniprot.org/uniprot/DPO42_SULSO DPO42_SULSO]] Poorly processive, error-prone DNA polymerase involved in untargeted mutagenesis. Copies undamaged DNA at stalled replication forks, which arise in vivo from mismatched or misaligned primer ends. These misaligned primers can be extended by PolIV. Exhibits no 3'-5' exonuclease (proofreading) activity. It is involved in translesional synthesis.[HAMAP-Rule:MF_01113] | |||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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[[Category: DNA-directed DNA polymerase]] | [[Category: DNA-directed DNA polymerase]] | ||
[[Category: Sulfolobus solfataricus p2]] | [[Category: Sulfolobus solfataricus p2]] | ||
[[Category: Malinina, L | [[Category: Malinina, L]] | ||
[[Category: Patel, D J | [[Category: Patel, D J]] | ||
[[Category: Rechkoblit, O | [[Category: Rechkoblit, O]] | ||
[[Category: 8-oxoguanine]] | [[Category: 8-oxoguanine]] | ||
[[Category: Dna damage]] | [[Category: Dna damage]] | ||
Revision as of 00:13, 26 December 2014
Dpo4 extension ternary complex with oxoG(anti)-T(anti) pairDpo4 extension ternary complex with oxoG(anti)-T(anti) pair
Structural highlights
Function[DPO42_SULSO] Poorly processive, error-prone DNA polymerase involved in untargeted mutagenesis. Copies undamaged DNA at stalled replication forks, which arise in vivo from mismatched or misaligned primer ends. These misaligned primers can be extended by PolIV. Exhibits no 3'-5' exonuclease (proofreading) activity. It is involved in translesional synthesis.[HAMAP-Rule:MF_01113] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed7,8-Dihydro-8-oxoguanine (oxoG), the predominant oxidative DNA damage lesion, is processed differently by high-fidelity and Y-family lesion bypass polymerases. Although high-fidelity polymerases extend predominantly from an A base opposite an oxoG, the Y-family polymerases Dpo4 and human Pol eta preferentially extend from the oxoG*C base pair. We have determined crystal structures of extension Dpo4 ternary complexes with oxoG opposite C, A, G, or T and the next nascent base pair. We demonstrate that neither template backbone nor the architecture of the active site is perturbed by the oxoG(anti)*C and oxoG*A pairs. However, the latter manifest conformational heterogeneity, adopting both oxoG(syn)*A(anti) and oxoG(anti)*A(syn) alignment. Hence, the observed reduced primer extension from the dynamically flexible 3'-terminal primer base A is explained. Because of homology between Dpo4 and Pol eta, such a dynamic screening mechanism might be utilized by Dpo4 and Pol eta to regulate error-free versus error-prone bypass of oxoG and other lesions. Impact of conformational heterogeneity of OxoG lesions and their pairing partners on bypass fidelity by Y family polymerases.,Rechkoblit O, Malinina L, Cheng Y, Geacintov NE, Broyde S, Patel DJ Structure. 2009 May 13;17(5):725-36. PMID:19446528[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)
OCA- DNA-directed DNA polymerase
- Sulfolobus solfataricus p2
- Malinina, L
- Patel, D J
- Rechkoblit, O
- 8-oxoguanine
- Dna damage
- Dna polymerase
- Dna repair
- Dna replication
- Dna-binding
- Dna-directed dna polymerase
- Lesion bypass
- Magnesium
- Metal-binding
- Mutator protein
- Nucleotidyltransferase
- Transferase
- Transferase-dna complex
- Y-family