View source for 5wm1


==Structure of the 10S (+)-trans-BP-dG modified Rev1 ternary complex==
<StructureSection load='5wm1' size='340' side='right' caption='[[5wm1]], [[Resolution|resolution]] 1.85&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5wm1]] 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=5WM1 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5WM1 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BAP:1,2,3-TRIHYDROXY-1,2,3,4-TETRAHYDROBENZO[A]PYRENE'>BAP</scene>, <scene name='pdbligand=DCP:2-DEOXYCYTIDINE-5-TRIPHOSPHATE'>DCP</scene>, <scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=DDG:2,3-DIDEOXY-GUANOSINE-5-MONOPHOSPHATE'>DDG</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">REV1, YOR346W, O6339 ([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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5wm1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5wm1 OCA], [http://pdbe.org/5wm1 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5wm1 RCSB], [http://www.ebi.ac.uk/pdbsum/5wm1 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5wm1 ProSAT]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/REV1_YEAST REV1_YEAST]] Deoxycytidyl transferase involved in DNA repair. Transfers a dCMP residue from dCTP to the 3'-end of a DNA primer in a template-dependent reaction. May assist in the first step in the bypass of abasic lesions by the insertion of a nucleotide opposite the lesion. Required for normal induction of mutations by physical and chemical agents. Involved in mitochondrial DNA mutagenesis.<ref>PMID:8751446</ref> <ref>PMID:11316789</ref> <ref>PMID:16452144</ref>  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Benzo[a]pyrene (BP) is a carcinogen in cigarette smoke which, after metabolic activation, can react with the exocyclic N 2 amino group of guanine to generate four stereoisomeric BP-N 2-dG adducts. Rev1 is unique among translesion synthesis DNA polymerases in employing a protein-template-directed mechanism of DNA synthesis opposite undamaged and damaged guanine. Here we report high-resolution structures of yeast Rev1 with three BP-N 2-dG adducts, namely the 10S (+)-trans-BP-N 2-dG, 10R (+)-cis-BP-N 2-dG, and 10S ( - )-cis-BP-N 2-dG. Surprisingly, in all three structures, the bulky and hydrophobic BP pyrenyl residue is entirely solvent-exposed in the major groove of the DNA. This is very different from the adduct alignments hitherto observed in free or protein-bound DNA. All complexes are well poised for dCTP insertion. Our structures provide a view of cis-BP-N 2-dG adducts in a DNA polymerase active site, and offer a basis for understanding error-free replication of the BP-derived stereoisomeric guanine adducts.Benzo[a]pyrene (BP) is a carcinogen in cigarette smoke that upon metabolic activation reacts with guanine. Here, the authors present the structures of the translesion DNA synthesis polymerase Rev1 in complex with three of the four possible stereoisomeric BP-N 2 -dG adducts, which gives insights how Rev1 achieves error-free replication.

Mechanism of error-free replication across benzo[a]pyrene stereoisomers by Rev1 DNA polymerase.,Rechkoblit O, Kolbanovskiy A, Landes H, Geacintov NE, Aggarwal AK Nat Commun. 2017 Oct 17;8(1):965. doi: 10.1038/s41467-017-01013-5. PMID:29042535<ref>PMID:29042535</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5wm1" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Baker's yeast]]
[[Category: Aggarwal, A K]]
[[Category: Geacintov, N E]]
[[Category: Kolbanovsky, A]]
[[Category: Landes, H]]
[[Category: Rechkoblit, O]]
[[Category: Dna binding protein]]
[[Category: Transferase-dna complex]]