2ihm

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[[Image:2ihm.gif|left|200px]]
 
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{{Structure
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==Polymerase mu in ternary complex with gapped 11mer DNA duplex and bound incoming nucleotide==
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|PDB= 2ihm |SIZE=350|CAPTION= <scene name='initialview01'>2ihm</scene>, resolution 2.4&Aring;
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<StructureSection load='2ihm' size='340' side='right'caption='[[2ihm]], [[Resolution|resolution]] 2.40&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene> and <scene name='pdbligand=D3T:2',3'-DIDEOXY-THYMIDINE-5'-TRIPHOSPHATE'>D3T</scene>
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<table><tr><td colspan='2'>[[2ihm]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IHM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2IHM FirstGlance]. <br>
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|ACTIVITY= [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]
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4&#8491;</td></tr>
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|GENE= Polm ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus])
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=D3T:2,3-DIDEOXY-THYMIDINE-5-TRIPHOSPHATE'>D3T</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
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}}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2ihm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ihm OCA], [https://pdbe.org/2ihm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ihm RCSB], [https://www.ebi.ac.uk/pdbsum/2ihm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ihm ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/DPOLM_MOUSE DPOLM_MOUSE] Gap-filling polymerase involved in repair of DNA double-strand breaks by non-homologous end joining (NHEJ). Participates in immunoglobulin (Ig) light chain gene rearrangement in V(D)J recombination.<ref>PMID:16860755</ref> <ref>PMID:17483519</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ih/2ihm_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2ihm ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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DNA polymerase mu (Pol mu) is a family X enzyme with unique substrate specificity that contributes to its specialized role in nonhomologous DNA end joining (NHEJ). To investigate Pol mu's unusual substrate specificity, we describe the 2.4 A crystal structure of the polymerase domain of murine Pol mu bound to gapped DNA with a correct dNTP at the active site. This structure reveals substrate interactions with side chains in Pol mu that differ from other family X members. For example, a single amino acid substitution, H329A, has little effect on template-dependent synthesis by Pol mu from a paired primer terminus, but it reduces both template-independent and template-dependent synthesis during NHEJ of intermediates whose 3' ends lack complementary template strand nucleotides. These results provide insight into the substrate specificity and differing functions of four closely related mammalian family X DNA polymerases.
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'''Polymerase mu in ternary complex with gapped 11mer DNA duplex and bound incoming nucleotide'''
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Structural insight into the substrate specificity of DNA Polymerase mu.,Moon AF, Garcia-Diaz M, Bebenek K, Davis BJ, Zhong X, Ramsden DA, Kunkel TA, Pedersen LC Nat Struct Mol Biol. 2007 Jan;14(1):45-53. Epub 2006 Dec 10. PMID:17159995<ref>PMID:17159995</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 2ihm" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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DNA polymerase mu (Pol mu) is a family X enzyme with unique substrate specificity that contributes to its specialized role in nonhomologous DNA end joining (NHEJ). To investigate Pol mu's unusual substrate specificity, we describe the 2.4 A crystal structure of the polymerase domain of murine Pol mu bound to gapped DNA with a correct dNTP at the active site. This structure reveals substrate interactions with side chains in Pol mu that differ from other family X members. For example, a single amino acid substitution, H329A, has little effect on template-dependent synthesis by Pol mu from a paired primer terminus, but it reduces both template-independent and template-dependent synthesis during NHEJ of intermediates whose 3' ends lack complementary template strand nucleotides. These results provide insight into the substrate specificity and differing functions of four closely related mammalian family X DNA polymerases.
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*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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2IHM is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2IHM OCA].
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__TOC__
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</StructureSection>
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==Reference==
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[[Category: Large Structures]]
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Structural insight into the substrate specificity of DNA Polymerase mu., Moon AF, Garcia-Diaz M, Bebenek K, Davis BJ, Zhong X, Ramsden DA, Kunkel TA, Pedersen LC, Nat Struct Mol Biol. 2007 Jan;14(1):45-53. Epub 2006 Dec 10. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/17159995 17159995]
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[[Category: DNA-directed DNA polymerase]]
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[[Category: Mus musculus]]
[[Category: Mus musculus]]
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[[Category: Single protein]]
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[[Category: Kunkel TA]]
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[[Category: Kunkel, T A.]]
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[[Category: Moon AF]]
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[[Category: Moon, A F.]]
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[[Category: Pedersen LC]]
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[[Category: Pedersen, L C]]
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[[Category: D3T]]
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[[Category: MG]]
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[[Category: NA]]
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[[Category: helix-turn-helix]]
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[[Category: polymerase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:29:38 2008''
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Current revision

Polymerase mu in ternary complex with gapped 11mer DNA duplex and bound incoming nucleotide

PDB ID 2ihm

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