View source for 8tlt


==Cryo-EM structure of Rev1(deltaN)-Polzeta-DNA-dCTP complex==
<StructureSection load='8tlt' size='340' side='right'caption='[[8tlt]], [[Resolution|resolution]] 2.85&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8tlt]] is a 8 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=8TLT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8TLT FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.85&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DCP:2-DEOXYCYTIDINE-5-TRIPHOSPHATE'>DCP</scene></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=8tlt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8tlt OCA], [https://pdbe.org/8tlt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8tlt RCSB], [https://www.ebi.ac.uk/pdbsum/8tlt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8tlt ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/DPOZ_YEAST DPOZ_YEAST] Nonessential DNA polymerase. Required for DNA damage induced mutagenesis. Involved in DNA repair, mitochondrial DNA repair and translesion synthesis. Translesion synthesis in S.cerevisiae may use a specialized DNA polymerase that is not required for other DNA replicative processes. Has a role in the bypass of abasic (AP) sites. Highly inefficient in incorporating nucleotides opposite the AP site, but efficiently extends from nucleotides, particularly an A, inserted opposite the lesion.<ref>PMID:11316789</ref> <ref>PMID:16452144</ref> <ref>PMID:2676986</ref> <ref>PMID:8658138</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Rev1-Polzeta-dependent translesion synthesis (TLS) of DNA is crucial for maintaining genome integrity. To elucidate the mechanism by which the two polymerases cooperate in TLS, we determined the cryogenic electron microscopic structure of the Saccharomyces cerevisiae Rev1-Polzeta holocomplex in the act of DNA synthesis (3.53 A). We discovered that a composite N-helix-BRCT module in Rev1 is the keystone of Rev1-Polzeta cooperativity, interacting directly with the DNA template-primer and with the Rev3 catalytic subunit of Polzeta. The module is positioned akin to the polymerase-associated domain in Y-family TLS polymerases and is set ideally to interact with PCNA. We delineate the full extent of interactions that the carboxy-terminal domain of Rev1 makes with Polzeta and identify potential new druggable sites to suppress chemoresistance from first-line chemotherapeutics. Collectively, our results provide fundamental new insights into the mechanism of cooperativity between Rev1 and Polzeta in TLS.

Cryo-EM structure of the Rev1-Polzeta holocomplex reveals the mechanism of their cooperativity in translesion DNA synthesis.,Malik R, Johnson RE, Ubarretxena-Belandia I, Prakash L, Prakash S, Aggarwal AK Nat Struct Mol Biol. 2024 Sep;31(9):1394-1403. doi: 10.1038/s41594-024-01302-w. , Epub 2024 May 8. PMID:38720088<ref>PMID:38720088</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8tlt" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Synthetic construct]]
[[Category: Aggarwal AK]]
[[Category: Malik R]]