5tyf: Difference between revisions
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<StructureSection load='5tyf' size='340' side='right'caption='[[5tyf]], [[Resolution|resolution]] 1.97Å' scene=''> | <StructureSection load='5tyf' size='340' side='right'caption='[[5tyf]], [[Resolution|resolution]] 1.97Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5tyf]] is a 4 chain structure with sequence from [ | <table><tr><td colspan='2'>[[5tyf]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Unidentified Unidentified]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TYF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5TYF FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=GOA:GLYCOLIC+ACID'>GOA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.971Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DTT:2,3-DIHYDROXY-1,4-DITHIOBUTANE'>DTT</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=GOA:GLYCOLIC+ACID'>GOA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=5tyf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tyf OCA], [https://pdbe.org/5tyf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5tyf RCSB], [https://www.ebi.ac.uk/pdbsum/5tyf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5tyf ProSAT]</span></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/DPOLM_HUMAN DPOLM_HUMAN] 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:12640116</ref> <ref>PMID:12888504</ref> <ref>PMID:17483519</ref> <ref>PMID:17915942</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
| Line 24: | Line 22: | ||
==See Also== | ==See Also== | ||
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]] | *[[DNA polymerase 3D structures|DNA polymerase 3D structures]] | ||
*[[RNA polymerase|RNA polymerase]] | *[[RNA polymerase 3D structures|RNA polymerase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Homo sapiens]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Unidentified]] | ||
[[Category: | [[Category: Jamsen JA]] | ||
[[Category: | [[Category: Wilson SH]] | ||
Latest revision as of 16:16, 4 October 2023
DNA Polymerase Mu Product Complex, 10 mM Mg2+ (270 min)DNA Polymerase Mu Product Complex, 10 mM Mg2+ (270 min)
Structural highlights
FunctionDPOLM_HUMAN 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.[1] [2] [3] [4] Publication Abstract from PubMedDNA polymerase (pol) mu is a DNA-dependent polymerase that incorporates nucleotides during gap-filling synthesis in the non-homologous end-joining pathway of double-strand break repair. Here we report time-lapse X-ray crystallography snapshots of catalytic events during gap-filling DNA synthesis by pol mu. Unique catalytic intermediates and active site conformational changes that underlie catalysis are uncovered, and a transient third (product) metal ion is observed in the product state. The product manganese coordinates phosphate oxygens of the inserted nucleotide and PPi. The product metal is not observed during DNA synthesis in the presence of magnesium. Kinetic analyses indicate that manganese increases the rate constant for deoxynucleoside 5'-triphosphate insertion compared to magnesium. The likely product stabilization role of the manganese product metal in pol mu is discussed. These observations provide insight on structural attributes of this X-family double-strand break repair polymerase that impact its biological function in genome maintenance.DNA polymerase (pol) mu functions in DNA double-strand break repair. Here the authors use time-lapse X-ray crystallography to capture the states of pol micro during the conversion from pre-catalytic to product complex and observe a third transiently bound metal ion in the product state. Time-lapse crystallography snapshots of a double-strand break repair polymerase in action.,Jamsen JA, Beard WA, Pedersen LC, Shock DD, Moon AF, Krahn JM, Bebenek K, Kunkel TA, Wilson SH Nat Commun. 2017 Aug 15;8(1):253. doi: 10.1038/s41467-017-00271-7. PMID:28811466[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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