2r8g

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Revision as of 22:31, 9 September 2015

Selectivity of Nucleoside Triphosphate Incorporation Opposite 1,N2-Propanodeoxyguanosine (PdG) by the Sulfolobus solfataricus DNA Polymerase Dpo4 Polymerase

Structural highlights

2r8g is a 3 chain structure with sequence from Sulfolobus solfataricus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
NonStd Res:
Related:	2r8h, 2r8i
Gene:	dbh, dpo4 (Sulfolobus solfataricus)
Activity:	DNA-directed DNA polymerase, with EC number 2.7.7.7
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[DPO4_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 PubMed

1, N (2)-Propanodeoxyguanosine (PdG) is a stable structural analogue for the 3-(2'-deoxy-beta- d- erythro-pentofuranosyl)pyrimido[1,2-alpha]purin-10(3 H)-one (M 1dG) adduct derived from exposure of DNA to base propenals and to malondialdehyde. The structures of ternary polymerase-DNA-dNTP complexes for three template-primer DNA sequences were determined, with the Y-family Sulfolobus solfataricus DNA polymerase IV (Dpo4), at resolutions between 2.4 and 2.7 A. Three template 18-mer-primer 13-mer sequences, 5'-d(TCACXAAATCCTTCCCCC)-3'.5'-d(GGGGGAAGGATTT)-3' (template I), 5'-d(TCACXGAATCCTTCCCCC)-3'.5'-d(GGGGGAAGGATTC)-3' (template II), and 5'-d(TCATXGAATCCTTCCCCC)-3'.5'-d(GGGGGAAGGATTC)-3' (template III), where X is PdG, were analyzed. With templates I and II, diffracting ternary complexes including dGTP were obtained. The dGTP did not pair with PdG, but instead with the 5'-neighboring template dC, utilizing Watson-Crick geometry. Replication bypass experiments with the template-primer 5'-TCACXAAATCCTTACGAGCATCGCCCCC-3'.5'-GGGGGCGATGCTCGTAAGGATTT-3', where X is PdG, which includes PdG in the 5'-CXA-3' template sequence as in template I, showed that the Dpo4 polymerase inserted dGTP and dATP when challenged by the PdG adduct. For template III, in which the template sequence was 5'-TXG-3', a diffracting ternary complex including dATP was obtained. The dATP did not pair with PdG, but instead with the 5'-neighboring T, utilizing Watson-Crick geometry. Thus, all three ternary complexes were of the "type II" structure described for ternary complexes with native DNA [Ling, H., Boudsocq, F., Woodgate, R., and Yang, W. (2001) Cell 107, 91-102]. The PdG adduct remained in the anti conformation about the glycosyl bond in each of these threee ternary complexes. These results provide insight into how -1 frameshift mutations might be generated for the PdG adduct, a structural model for the exocylic M 1dG adduct formed by malondialdehyde.

Insertion of dNTPs opposite the 1,N2-propanodeoxyguanosine adduct by Sulfolobus solfataricus P2 DNA polymerase IV.,Wang Y, Musser SK, Saleh S, Marnett LJ, Egli M, Stone MP Biochemistry. 2008 Jul 15;47(28):7322-34. Epub 2008 Jun 19. PMID:18563918^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Wang Y, Musser SK, Saleh S, Marnett LJ, Egli M, Stone MP. Insertion of dNTPs opposite the 1,N2-propanodeoxyguanosine adduct by Sulfolobus solfataricus P2 DNA polymerase IV. Biochemistry. 2008 Jul 15;47(28):7322-34. Epub 2008 Jun 19. PMID:18563918 doi:10.1021/bi800152j

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2r8g"

@@ Line 8: / Line 8: @@
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">dbh, dpo4 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2287 Sulfolobus solfataricus])</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 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=2r8g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2r8g OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2r8g RCSB], [http://www.ebi.ac.uk/pdbsum/2r8g 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=2r8g FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2r8g OCA], [http://pdbe.org/2r8g PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2r8g RCSB], [http://www.ebi.ac.uk/pdbsum/2r8g PDBsum]</span></td></tr>
 </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]
+[[http://www.uniprot.org/uniprot/DPO4_SULSO DPO4_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 ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 30: / Line 30: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2r8g" style="background-color:#fffaf0;"></div>
 ==See Also==

2r8g

From Proteopedia

Revision as of 22:31, 9 September 2015

Selectivity of Nucleoside Triphosphate Incorporation Opposite 1,N2-Propanodeoxyguanosine (PdG) by the Sulfolobus solfataricus DNA Polymerase Dpo4 Polymerase

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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