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4o9m

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Human DNA polymerase beta complexed with adenylated tetrahydrofuran (abasic site) containing DNA

Structural highlights

4o9m is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.295Å
Ligands:	,
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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]

Publication Abstract from PubMed

DNA polymerase beta (pol beta) lyase removal of 5'-deoxyribose phosphate (5'-dRP) from base excision repair (BER) intermediates is critical in mammalian BER involving the abasic site. We found that pol beta also removes 5'-adenylated dRP from BER intermediates after abortive ligation. The crystal structure of a human pol beta-DNA complex showed the 5'-AMP-dRP group positioned in the lyase active site. Pol beta expression rescued methyl methanesulfonate sensitivity in aprataxin (hnt3)- and FEN1 (rad27)-deficient yeast.

Role of polymerase beta in complementing aprataxin deficiency during abasic-site base excision repair.,Caglayan M, Batra VK, Sassa A, Prasad R, Wilson SH Nat Struct Mol Biol. 2014 May;21(5):497-9. doi: 10.1038/nsmb.2818. Epub 2014 Apr , 28. PMID:24777061^[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
↑ Caglayan M, Batra VK, Sassa A, Prasad R, Wilson SH. Role of polymerase beta in complementing aprataxin deficiency during abasic-site base excision repair. Nat Struct Mol Biol. 2014 May;21(5):497-9. doi: 10.1038/nsmb.2818. Epub 2014 Apr , 28. PMID:24777061 doi:http://dx.doi.org/10.1038/nsmb.2818

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4o9m"

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4o9m]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4O9M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4O9M FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2RW:[(2R,3S,4R,5R)-5-(6-AMINO-9H-PURIN-9-YL)-3,4-DIHYDROXYTETRAHYDROFURAN-2-YL]METHYL+[(2R,3S)-3-HYDROXYTETRAHYDROFURAN-2-YL]METHYL+DIHYDROGEN+DIPHOSPHATE'>2RW</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.295&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2RW:[(2R,3S,4R,5R)-5-(6-AMINO-9H-PURIN-9-YL)-3,4-DIHYDROXYTETRAHYDROFURAN-2-YL]METHYL+[(2R,3S)-3-HYDROXYTETRAHYDROFURAN-2-YL]METHYL+DIHYDROGEN+DIPHOSPHATE'>2RW</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
 <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4o9m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4o9m OCA], [https://pdbe.org/4o9m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4o9m RCSB], [https://www.ebi.ac.uk/pdbsum/4o9m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4o9m ProSAT]</span></td></tr>
 </table>
@@ Line 18: / Line 19: @@
 </div>
 <div class="pdbe-citations 4o9m" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
 == References ==
 <references/>

4o9m

From Proteopedia

Current revision

Human DNA polymerase beta complexed with adenylated tetrahydrofuran (abasic site) containing DNA

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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