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==Crystal structure of the carboxyl-terminal domain of yeast DNA polymerase alpha in complex with its B subunit==
==Crystal structure of the carboxyl-terminal domain of yeast DNA polymerase alpha in complex with its B subunit==
<StructureSection load='3flo' size='340' side='right' caption='[[3flo]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
<StructureSection load='3flo' size='340' side='right'caption='[[3flo]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3flo]] is a 12 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_18824 Atcc 18824]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FLO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3FLO FirstGlance]. <br>
<table><tr><td colspan='2'>[[3flo]] is a 12 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FLO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3FLO FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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]] 2.5&#8491;</td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=UNK:UNKNOWN'>UNK</scene></td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">POL12 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824]), POL1, CDC17 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 ATCC 18824])</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=3flo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3flo OCA], [https://pdbe.org/3flo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3flo RCSB], [https://www.ebi.ac.uk/pdbsum/3flo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3flo 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>
<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=3flo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3flo OCA], [http://pdbe.org/3flo PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3flo RCSB], [http://www.ebi.ac.uk/pdbsum/3flo PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3flo ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/DPOA2_YEAST DPOA2_YEAST]] Non-catalytic component of DNA polymerase alpha, which in a complex with DNA primase (DNA polymerase alpha:primase) constitutes a replicative polymerase. POL12 may play an essential role at the early stage of chromosomal DNA replication by coupling DNA polymerase alpha to the cellular replication machinery (By similarity). Interacts with MCM10. [[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/DPOA2_YEAST DPOA2_YEAST] Non-catalytic component of DNA polymerase alpha, which in a complex with DNA primase (DNA polymerase alpha:primase) constitutes a replicative polymerase. POL12 may play an essential role at the early stage of chromosomal DNA replication by coupling DNA polymerase alpha to the cellular replication machinery (By similarity). Interacts with MCM10.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fl/3flo_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fl/3flo_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
Line 22: Line 20:
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3flo ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=3flo ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Eukaryotic DNA replication requires the coordinated activity of the multi-subunit DNA polymerases: Pol alpha, Pol delta and Pol epsilon. The conserved catalytic and regulatory B subunits associate in a constitutive heterodimer that represents the functional core of all three replicative polymerases. Here, we combine X-ray crystallography and electron microscopy (EM) to describe subunit interaction and 3D architecture of heterodimeric yeast Pol alpha. The crystal structure of the C-terminal domain (CTD) of the catalytic subunit bound to the B subunit illustrates a conserved mechanism of accessory factor recruitment by replicative polymerases. The EM reconstructions of Pol alpha reveal a bilobal shape with separate catalytic and regulatory modules. Docking of the B-CTD complex in the EM reconstruction shows that the B subunit is tethered to the polymerase domain through a structured but flexible linker. Our combined findings provide a structural template for the common functional architecture of the three major replicative DNA polymerases.
3D architecture of DNA Pol alpha reveals the functional core of multi-subunit replicative polymerases.,Klinge S, Nunez-Ramirez R, Llorca O, Pellegrini L EMBO J. 2009 Jul 8;28(13):1978-87. Epub 2009 Jun 4. PMID:19494830<ref>PMID:19494830</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3flo" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[DNA polymerase|DNA polymerase]]
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Atcc 18824]]
[[Category: Large Structures]]
[[Category: DNA-directed DNA polymerase]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Klinge, S N]]
[[Category: Klinge SN]]
[[Category: Pellegrini, L]]
[[Category: Pellegrini L]]
[[Category: Dna replication]]
[[Category: Dna-binding]]
[[Category: Dna-directed dna polymerase]]
[[Category: Nucleotidyltransferase]]
[[Category: Nucleus]]
[[Category: Ob fold]]
[[Category: Phosphoesterase fold]]
[[Category: Phosphoprotein]]
[[Category: Protein-protein complex]]
[[Category: Transferase]]
[[Category: Zinc-binding motif]]

Latest revision as of 08:25, 20 March 2024

Crystal structure of the carboxyl-terminal domain of yeast DNA polymerase alpha in complex with its B subunit

3flo, resolution 2.50Å

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