1zjn

From Proteopedia

(Difference between revisions)

Revision as of 21:09, 10 September 2015

Human DNA Polymerase beta complexed with DNA containing an A-A mismatched primer terminus with dGTP

Structural highlights

1zjn is a 4 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Related:	1bpy, 1zjm
Gene:	POLB (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[DPOLB_HUMAN] Repair polymerase that plays a key role in base-excision repair. Has 5'-deoxyribose-5-phosphate lyase (dRP lyase) activity that removes the 5' sugar phosphate and also acts as a DNA polymerase that adds one nucleotide to the 3' end of the arising single-nucleotide gap. Conducts 'gap-filling' DNA synthesis in a stepwise distributive fashion rather than in a processive fashion as for other DNA polymerases.^[1] ^[2] ^[3] ^[4]

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

DNA polymerases occasionally insert the wrong nucleotide. For this error to become a mutation, the mispair must be extended. We report a structure of DNA polymerase beta (pol beta) with a DNA mismatch at the boundary of the polymerase active site. The structure of this complex indicates that the templating adenine of the mispair stacks with the primer terminus adenine while the templating (coding) cytosine is flipped out of the DNA helix. Soaking the crystals of the binary complex with dGTP resulted in crystals of a ternary substrate complex. In this case, the templating cytosine is observed within the DNA helix and forms Watson-Crick hydrogen bonds with the incoming dGTP. The adenine at the primer terminus has rotated into a syn-conformation to interact with the opposite adenine in a planar configuration. Yet, the 3'-hydroxyl on the primer terminus is out of position for efficient nucleotide insertion.

Nucleotide-induced DNA polymerase active site motions accommodating a mutagenic DNA intermediate.,Batra VK, Beard WA, Shock DD, Pedersen LC, Wilson SH Structure. 2005 Aug;13(8):1225-33. PMID:16084394^[5]

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

References

↑ Bennett RA, Wilson DM 3rd, Wong D, Demple B. Interaction of human apurinic endonuclease and DNA polymerase beta in the base excision repair pathway. Proc Natl Acad Sci U S A. 1997 Jul 8;94(14):7166-9. PMID:9207062
↑ Matsumoto Y, Kim K, Katz DS, Feng JA. Catalytic center of DNA polymerase beta for excision of deoxyribose phosphate groups. Biochemistry. 1998 May 5;37(18):6456-64. PMID:9572863 doi:10.1021/bi9727545
↑ DeMott MS, Beyret E, Wong D, Bales BC, Hwang JT, Greenberg MM, Demple B. Covalent trapping of human DNA polymerase beta by the oxidative DNA lesion 2-deoxyribonolactone. J Biol Chem. 2002 Mar 8;277(10):7637-40. Epub 2002 Jan 22. PMID:11805079 doi:10.1074/jbc.C100577200
↑ Parsons JL, Dianova II, Khoronenkova SV, Edelmann MJ, Kessler BM, Dianov GL. USP47 is a deubiquitylating enzyme that regulates base excision repair by controlling steady-state levels of DNA polymerase beta. Mol Cell. 2011 Mar 4;41(5):609-15. doi: 10.1016/j.molcel.2011.02.016. PMID:21362556 doi:10.1016/j.molcel.2011.02.016
↑ Batra VK, Beard WA, Shock DD, Pedersen LC, Wilson SH. Nucleotide-induced DNA polymerase active site motions accommodating a mutagenic DNA intermediate. Structure. 2005 Aug;13(8):1225-33. PMID:16084394 doi:10.1016/j.str.2005.05.010

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/1zjn"

@@ Line 2: / Line 2: @@
 <StructureSection load='1zjn' size='340' side='right' caption='[[1zjn]], [[Resolution|resolution]] 2.61&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1zjn]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZJN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ZJN FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1zjn]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZJN OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ZJN FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DGT:2-DEOXYGUANOSINE-5-TRIPHOSPHATE'>DGT</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1bpy|1bpy]], [[1zjm|1zjm]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">POLB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">POLB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=1zjn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zjn OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1zjn RCSB], [http://www.ebi.ac.uk/pdbsum/1zjn 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=1zjn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1zjn OCA], [http://pdbe.org/1zjn PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1zjn RCSB], [http://www.ebi.ac.uk/pdbsum/1zjn PDBsum]</span></td></tr>
 </table>
+== Function ==
+[[http://www.uniprot.org/uniprot/DPOLB_HUMAN DPOLB_HUMAN]] Repair polymerase that plays a key role in base-excision repair. Has 5'-deoxyribose-5-phosphate lyase (dRP lyase) activity that removes the 5' sugar phosphate and also acts as a DNA polymerase that adds one nucleotide to the 3' end of the arising single-nucleotide gap. Conducts 'gap-filling' DNA synthesis in a stepwise distributive fashion rather than in a processive fashion as for other DNA polymerases.<ref>PMID:9207062</ref> <ref>PMID:9572863</ref> <ref>PMID:11805079</ref> <ref>PMID:21362556</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 26: / Line 28: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1zjn" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 33: / Line 36: @@
 __TOC__
 </StructureSection>
-[[Category: Homo sapiens]]
+[[Category: Human]]
 [[Category: Batra, V K]]
 [[Category: Beard, W A]]

1zjn

From Proteopedia

Revision as of 21:09, 10 September 2015

Human DNA Polymerase beta complexed with DNA containing an A-A mismatched primer terminus with dGTP

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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