6h1v
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | The | + | ==The crystal structure of Pol2CORE in complex with DNA and an incoming nucleotide, carrying an Fe-S cluster== |
| + | <StructureSection load='6h1v' size='340' side='right'caption='[[6h1v]], [[Resolution|resolution]] 2.70Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[6h1v]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Baker's_yeast Baker's yeast]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6H1V OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6H1V FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=DTP:2-DEOXYADENOSINE+5-TRIPHOSPHATE'>DTP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></td></tr> | ||
| + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=DOC:2,3-DIDEOXYCYTIDINE-5-MONOPHOSPHATE'>DOC</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[6gzg|6gzg]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">POL2, DUN2, YNL262W, N0825 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast])</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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6h1v FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6h1v OCA], [http://pdbe.org/6h1v PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6h1v RCSB], [http://www.ebi.ac.uk/pdbsum/6h1v PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6h1v ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [[http://www.uniprot.org/uniprot/DPOE_YEAST DPOE_YEAST]] DNA polymerase epsilon (DNA polymerase II) participates in chromosomal DNA replication. It is required during synthesis of the leading and lagging DNA strands at the replication fork and binds at/or near replication origins and moves along DNA with the replication fork. It has 3'-5' proofreading exonuclease activity that correct errors arising during DNA replication. It is also involved in DNA synthesis during DNA repair.<ref>PMID:12124389</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | DNA polymerase (Pol ), the major leading-strand DNA polymerase in eukaryotes, has a catalytic subunit (Pol2) and three non-catalytic subunits. The N-terminal half of Pol2 (Pol2CORE) exhibits both polymerase and exonuclease activity. It has been suggested that both the non-catalytic C-terminal domain of Pol2 (with the two cysteine motifs CysA and CysB) and Pol2CORE (with the CysX cysteine motif) are likely to coordinate an Fe-S cluster. Here, we present two new crystal structures of Pol2CORE with an Fe-S cluster bound to the CysX motif, supported by an anomalous signal at that position. Furthermore we show that purified four-subunit Pol , Pol CysAMUT (C2111S/C2133S), and Pol CysBMUT (C2167S/C2181S) all have an Fe-S cluster that is not present in Pol CysXMUT (C665S/C668S). Pol CysAMUT and Pol CysBMUT behave similarly to wild-type Pol in in vitro assays, but Pol CysXMUT has severely compromised DNA polymerase activity that is not the result of an excessive exonuclease activity. Tetrad analyses show that haploid yeast strains carrying CysXMUT are inviable. In conclusion, Pol has a single Fe-S cluster bound at the base of the P-domain, and this Fe-S cluster is essential for cell viability and polymerase activity. | ||
| - | + | Structural evidence for an essential Fe-S cluster in the catalytic core domain of DNA polymerase .,Ter Beek J, Parkash V, Bylund GO, Osterman P, Sauer-Eriksson AE, Johansson E Nucleic Acids Res. 2019 Apr 10. pii: 5436772. doi: 10.1093/nar/gkz248. PMID:30968138<ref>PMID:30968138</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| - | [[Category: | + | <div class="pdbe-citations 6h1v" style="background-color:#fffaf0;"></div> |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Baker's yeast]] | ||
| + | [[Category: DNA-directed DNA polymerase]] | ||
| + | [[Category: Large Structures]] | ||
[[Category: Johansson, E]] | [[Category: Johansson, E]] | ||
| + | [[Category: Parkash, V]] | ||
| + | [[Category: Complex]] | ||
| + | [[Category: Dna]] | ||
| + | [[Category: Dna binding protein]] | ||
| + | [[Category: Fe-]] | ||
| + | [[Category: M644g]] | ||
| + | [[Category: Pol epsilon]] | ||
Current revision
The crystal structure of Pol2CORE in complex with DNA and an incoming nucleotide, carrying an Fe-S cluster
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