5n2e: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
==Structure of the E9 DNA polymerase from vaccinia virus== | ==Structure of the E9 DNA polymerase from vaccinia virus== | ||
<StructureSection load='5n2e' size='340' side='right' caption='[[5n2e]], [[Resolution|resolution]] 2.74Å' scene=''> | <StructureSection load='5n2e' size='340' side='right'caption='[[5n2e]], [[Resolution|resolution]] 2.74Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[5n2e]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[5n2e]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Vaccinia_virus_Copenhagen Vaccinia virus Copenhagen]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5N2E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5N2E 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=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</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]] 2.74Å</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=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5n2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5n2e OCA], [https://pdbe.org/5n2e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5n2e RCSB], [https://www.ebi.ac.uk/pdbsum/5n2e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5n2e ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/DPOL_VACCC DPOL_VACCC] Catalyzes DNA synthesis. Acquires processivity by associating with a heterodimeric processivity factor comprised of the viral A20 and D4 proteins, thereby forming the DNA polymerase holoenzyme. Displays 3'- to 5' exonuclease activity. Might participate in viral DNA recombination. Does not perform translesion synthesis across an abasic site (By similarity). | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
| Line 21: | Line 21: | ||
==See Also== | ==See Also== | ||
*[[DNA polymerase|DNA polymerase]] | *[[DNA polymerase 3D structures|DNA polymerase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Vaccinia virus Copenhagen]] | ||
[[Category: | [[Category: Burmeister WP]] | ||
[[Category: | [[Category: Iseni F]] | ||
[[Category: | [[Category: Tarbouriech N]] | ||
Latest revision as of 20:58, 8 November 2023
Structure of the E9 DNA polymerase from vaccinia virusStructure of the E9 DNA polymerase from vaccinia virus
Structural highlights
FunctionDPOL_VACCC Catalyzes DNA synthesis. Acquires processivity by associating with a heterodimeric processivity factor comprised of the viral A20 and D4 proteins, thereby forming the DNA polymerase holoenzyme. Displays 3'- to 5' exonuclease activity. Might participate in viral DNA recombination. Does not perform translesion synthesis across an abasic site (By similarity). Publication Abstract from PubMedVaccinia virus (VACV), the prototype member of the Poxviridae, replicates in the cytoplasm of an infected cell. The catalytic subunit of the DNA polymerase E9 binds the heterodimeric processivity factor A20/D4 to form the functional polymerase holoenzyme. Here we present the crystal structure of full-length E9 at 2.7 A resolution that permits identification of important poxvirus-specific structural insertions. One insertion in the palm domain interacts with C-terminal residues of A20 and thus serves as the processivity factor-binding site. This is in strong contrast to all other family B polymerases that bind their co-factors at the C terminus of the thumb domain. The VACV E9 structure also permits rationalization of polymerase inhibitor resistance mutations when compared with the closely related eukaryotic polymerase delta-DNA complex. The vaccinia virus DNA polymerase structure provides insights into the mode of processivity factor binding.,Tarbouriech N, Ducournau C, Hutin S, Mas PJ, Man P, Forest E, Hart DJ, Peyrefitte CN, Burmeister WP, Iseni F Nat Commun. 2017 Nov 13;8(1):1455. doi: 10.1038/s41467-017-01542-z. PMID:29129932[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
|
| ||||||||||||||||||