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| | ==Crystal structure of yeast DNA polymerase alpha== | | ==Crystal structure of yeast DNA polymerase alpha== |
| - | <StructureSection load='4fvm' size='340' side='right' caption='[[4fvm]], [[Resolution|resolution]] 2.30Å' scene=''> | + | <StructureSection load='4fvm' size='340' side='right'caption='[[4fvm]], [[Resolution|resolution]] 2.30Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4fvm]] is a 1 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=4FVM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4FVM FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4fvm]] is a 1 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=4FVM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4FVM FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4b08|4b08]], [[4fxd|4fxd]], [[4fyd|4fyd]]</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3Å</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>
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=4fvm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fvm OCA], [https://pdbe.org/4fvm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4fvm RCSB], [https://www.ebi.ac.uk/pdbsum/4fvm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4fvm ProSAT]</span></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>
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| - | <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=4fvm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4fvm OCA], [http://pdbe.org/4fvm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4fvm RCSB], [http://www.ebi.ac.uk/pdbsum/4fvm PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4fvm 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;">
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| - | == Publication Abstract from PubMed ==
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| - | 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.
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| - | 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<ref>PMID:23599895</ref>
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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| - | </div>
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| - | <div class="pdbe-citations 4fvm" style="background-color:#fffaf0;"></div>
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| | ==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: Baker's yeast]] | + | [[Category: Large Structures]] |
| - | [[Category: DNA-directed DNA polymerase]] | + | [[Category: Saccharomyces cerevisiae S288C]] |
| - | [[Category: Pellegrini, L]] | + | [[Category: Pellegrini L]] |
| - | [[Category: Perera, R L]] | + | [[Category: Perera RL]] |
| - | [[Category: Dna polymerase]]
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| - | [[Category: Dna replication]]
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| - | [[Category: Transferase]]
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