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| | ==Crystal structure of yeast DNA polymerase alpha bound to DNA/RNA== | | ==Crystal structure of yeast DNA polymerase alpha bound to DNA/RNA== |
| - | <StructureSection load='4fxd' size='340' side='right' caption='[[4fxd]], [[Resolution|resolution]] 3.00Å' scene=''> | + | <StructureSection load='4fxd' size='340' side='right'caption='[[4fxd]], [[Resolution|resolution]] 3.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4fxd]] is a 6 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=4FXD OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FXD FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4fxd]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4FXD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FXD FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4b08|4b08]], [[4fvm|4fvm]], [[4fyd|4fyd]]</td></tr> | + | </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=4fxd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fxd OCA], [https://pdbe.org/4fxd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fxd RCSB], [https://www.ebi.ac.uk/pdbsum/4fxd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fxd ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CDC17, N2181, POL1, YNL102W ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast])</td></tr>
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| - | <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=4fxd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fxd OCA], [http://pdbe.org/4fxd PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4fxd RCSB], [http://www.ebi.ac.uk/pdbsum/4fxd PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4fxd ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/DPOA_YEAST DPOA_YEAST]] Catalytic component of DNA polymerase alpha, which in complex with DNA primase (DNA polymerase alpha:primase) consitutes a replicative polymerase. POL1 has a role in promoting telomere replication during interaction with CDC13.<ref>PMID:10898792</ref> | + | [https://www.uniprot.org/uniprot/DPOLA_YEAST DPOLA_YEAST] Catalytic component of DNA polymerase alpha, which in complex with DNA primase (DNA polymerase alpha:primase) constitutes a replicative polymerase (PubMed:10898792, PubMed:22119860, PubMed:31488849). POL1 has a role in promoting telomere replication during interaction with CDC13 (PubMed:10898792).<ref>PMID:10898792</ref> <ref>PMID:22119860</ref> <ref>PMID:31488849</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </div> | | </div> |
| | <div class="pdbe-citations 4fxd" style="background-color:#fffaf0;"></div> | | <div class="pdbe-citations 4fxd" style="background-color:#fffaf0;"></div> |
| - | | |
| - | ==See Also== | |
| - | *[[DNA polymerase|DNA polymerase]] | |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Baker's yeast]] | + | [[Category: Large Structures]] |
| - | [[Category: DNA-directed DNA polymerase]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
| - | [[Category: Kilkenny, M L]] | + | [[Category: Kilkenny ML]] |
| - | [[Category: Klinge, S]] | + | [[Category: Klinge S]] |
| - | [[Category: Maman, J D]] | + | [[Category: Maman JD]] |
| - | [[Category: Pellegrini, L]] | + | [[Category: Pellegrini L]] |
| - | [[Category: Perera, R L]] | + | [[Category: Perera RL]] |
| - | [[Category: Torella, R]] | + | [[Category: Torella R]] |
| - | [[Category: Dna polymerase]]
| + | |
| - | [[Category: Dna replication]]
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| - | [[Category: Transferase-dna-rna complex]]
| + | |
| Structural highlights
Function
DPOLA_YEAST Catalytic component of DNA polymerase alpha, which in complex with DNA primase (DNA polymerase alpha:primase) constitutes a replicative polymerase (PubMed:10898792, PubMed:22119860, PubMed:31488849). POL1 has a role in promoting telomere replication during interaction with CDC13 (PubMed:10898792).[1] [2] [3]
Publication Abstract from PubMed
The DNA Polymerase alpha (Pol alpha)/primase complex initiates DNA synthesis in eukaryotic replication. In the complex, Pol alpha and primase cooperate in the production of RNA-DNA oligonucleotides that prime synthesis of new DNA. Here we report crystal structures of the catalytic core of yeast Pol alpha in unliganded form, bound to an RNA primer/DNA template and extending an RNA primer with deoxynucleotides. We combine the structural analysis with biochemical and computational data to demonstrate that Pol alpha specifically recognizes the A-form RNA/DNA helix and that the ensuing synthesis of B-form DNA terminates primer synthesis. The spontaneous release of the completed RNA-DNA primer by the Pol alpha/primase complex simplifies current models of primer transfer to leading- and lagging strand polymerases. The proposed mechanism of nucleotide polymerization by Pol alpha might contribute to genomic stability by limiting the amount of inaccurate DNA to be corrected at the start of each Okazaki fragment. DOI:http://dx.doi.org/10.7554/eLife.00482.001.
Mechanism for priming DNA synthesis by yeast DNA Polymerase alpha.,Perera RL, Torella R, Klinge S, Kilkenny ML, Maman JD, Pellegrini L Elife. 2013 Apr 2;2:e00482. doi: 10.7554/eLife.00482. Print 2013. PMID:23599895[4]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Qi H, Zakian VA. The Saccharomyces telomere-binding protein Cdc13p interacts with both the catalytic subunit of DNA polymerase alpha and the telomerase-associated est1 protein. Genes Dev. 2000 Jul 15;14(14):1777-88. PMID:10898792
- ↑ Netz DJ, Stith CM, Stumpfig M, Kopf G, Vogel D, Genau HM, Stodola JL, Lill R, Burgers PM, Pierik AJ. Eukaryotic DNA polymerases require an iron-sulfur cluster for the formation of active complexes. Nat Chem Biol. 2011 Nov 27;8(1):125-32. doi: 10.1038/nchembio.721. PMID:22119860 doi:http://dx.doi.org/10.1038/nchembio.721
- ↑ Zhou ZX, Lujan SA, Burkholder AB, Garbacz MA, Kunkel TA. Roles for DNA polymerase delta in initiating and terminating leading strand DNA replication. Nat Commun. 2019 Sep 5;10(1):3992. doi: 10.1038/s41467-019-11995-z. PMID:31488849 doi:http://dx.doi.org/10.1038/s41467-019-11995-z
- ↑ Perera RL, Torella R, Klinge S, Kilkenny ML, Maman JD, Pellegrini L. Mechanism for priming DNA synthesis by yeast DNA Polymerase alpha. Elife. 2013 Apr 2;2:e00482. doi: 10.7554/eLife.00482. Print 2013. PMID:23599895 doi:http://dx.doi.org/10.7554/eLife.00482
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