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| | ==NMR SOLUTION STRUCTURE OF THE N-TERMINAL DOMAIN OF DNA POLYMERASE BETA, MINIMIZED AVERAGE STRUCTURE== | | ==NMR SOLUTION STRUCTURE OF THE N-TERMINAL DOMAIN OF DNA POLYMERASE BETA, MINIMIZED AVERAGE STRUCTURE== |
| - | <StructureSection load='1bno' size='340' side='right'caption='[[1bno]], [[NMR_Ensembles_of_Models | 1 NMR models]]' scene=''> | + | <StructureSection load='1bno' size='340' side='right'caption='[[1bno]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1bno]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BNO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1BNO FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1bno]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BNO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BNO FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1bnp|1bnp]]</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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'>[https://proteopedia.org/fgij/fg.htm?mol=1bno FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bno OCA], [https://pdbe.org/1bno PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1bno RCSB], [https://www.ebi.ac.uk/pdbsum/1bno PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1bno ProSAT]</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=1bno FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1bno OCA], [http://pdbe.org/1bno PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1bno RCSB], [http://www.ebi.ac.uk/pdbsum/1bno PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1bno ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/DPOLB_RAT DPOLB_RAT]] 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. | + | [https://www.uniprot.org/uniprot/DPOLB_RAT DPOLB_RAT] 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. |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Buffalo rat]] | |
| - | [[Category: DNA-directed DNA polymerase]] | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Derose, E F]] | + | [[Category: Rattus norvegicus]] |
| - | [[Category: Liu, D J]] | + | [[Category: Derose EF]] |
| - | [[Category: Mullen, G P]] | + | [[Category: Liu D-J]] |
| - | [[Category: Prasad, R]] | + | [[Category: Mullen GP]] |
| - | [[Category: Wilson, S H]] | + | [[Category: Prasad R]] |
| - | [[Category: Dna polymerase beta]]
| + | [[Category: Wilson SH]] |
| - | [[Category: N-terminal domain]]
| + | |
| - | [[Category: Nucleotidyltransferase]]
| + | |
| - | [[Category: Single-stranded dna-binding]]
| + | |
| Structural highlights
Function
DPOLB_RAT 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.
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 polymerase beta (beta-Pol) consists of an N-terminal ssDNA binding domain with deoxyribose phosphodiesterase activity and a C-terminal domain with nucleotidyltransferase activity. The solution structure of the cloned N-terminal domain of beta-Pol has been determined by multidimensional heteronuclear NMR using experimental restraints that included 1030 distances based on analysis of NOE connectivities, 68 phi, chi 1, and chi 2 torsion angles based on analysis of couplings, and 22 hydrogen bonds. Hydrogen bonds were assessed only within helices by the absence of saturation transfer from water at pH 6.7, by NOEs and JNH alpha couplings indicative of well-structured helices, and by 13C alpha chemical shifts characteristic of helices. The root mean square deviation for heavy backbone atoms within the helices was 0.64 A in 55 structures. The solution structure of the N-terminal domain is formed from four helices packed as two antiparallel pairs crossing at 50 degrees in a V-like shape. The domain binds p(dT)8, a template analogue, as a 1:1 complex in 100 mM NaCl (KD = 10 microM). Analysis of the binding equilibria at increasing NaCl concentrations indicated that ionic contacts contribute to the complex. The binding interaction was mapped to one face of the domain by characterizing backbone 1H and 15N chemical shift changes. Assigned intermolecular NOEs from 2D NOESY support the assessment of the binding interface. The structure that forms the interaction surface includes an antiparallel helix-3-turn-helix-4 motif and residues adjacent to an omega-type loop connecting helix-1 and helix-2. Sites appropriate for nucleotide contact on the structure are described. The mapped interaction interface for a ssDNA template is the first described for a DNA polymerase.
Three-dimensional solution structure of the N-terminal domain of DNA polymerase beta and mapping of the ssDNA interaction interface.,Liu D, Prasad R, Wilson SH, DeRose EF, Mullen GP Biochemistry. 1996 May 21;35(20):6188-200. PMID:8639559[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Liu D, Prasad R, Wilson SH, DeRose EF, Mullen GP. Three-dimensional solution structure of the N-terminal domain of DNA polymerase beta and mapping of the ssDNA interaction interface. Biochemistry. 1996 May 21;35(20):6188-200. PMID:8639559 doi:10.1021/bi952656o
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