1ua1

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[[Image:1ua1.gif|left|200px]]
 
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==Structure of aminofluorene adduct paired opposite cytosine at the polymerase active site.==
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The line below this paragraph, containing "STRUCTURE_1ua1", creates the "Structure Box" on the page.
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<StructureSection load='1ua1' size='340' side='right'caption='[[1ua1]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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== Structural highlights ==
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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<table><tr><td colspan='2'>[[1ua1]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UA1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1UA1 FirstGlance]. <br>
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or leave the SCENE parameter empty for the default display.
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</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&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AF:2-AMINOFLUORENE'>AF</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
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{{STRUCTURE_1ua1| PDB=1ua1 | SCENE= }}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1ua1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ua1 OCA], [https://pdbe.org/1ua1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ua1 RCSB], [https://www.ebi.ac.uk/pdbsum/1ua1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ua1 ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/DPO1_GEOSE DPO1_GEOSE] In addition to polymerase activity, this DNA polymerase exhibits 5' to 3' exonuclease activity.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ua/1ua1_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1ua1 ConSurf].
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<div style="clear:both"></div>
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'''Structure of aminofluorene adduct paired opposite cytosine at the polymerase active site.'''
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==See Also==
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*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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Aromatic amines have been studied for more than a half-century as model carcinogens representing a class of chemicals that form bulky adducts to the C8 position of guanine in DNA. Among these guanine adducts, the N-(2'-deoxyguanosin-8-yl)-aminofluorene (G-AF) and N-2-(2'-deoxyguanosin-8-yl)-acetylaminofluorene (G-AAF) derivatives are the best studied. Although G-AF and G-AAF differ by only an acetyl group, they exert different effects on DNA replication by replicative and high-fidelity DNA polymerases. Translesion synthesis of G-AF is achieved with high-fidelity polymerases, whereas replication of G-AAF requires specialized bypass polymerases. Here we have presented structures of G-AF as it undergoes one round of accurate replication by a high-fidelity DNA polymerase. Nucleotide incorporation opposite G-AF is achieved in solution and in the crystal, revealing how the polymerase accommodates and replicates past G-AF, but not G-AAF. Like an unmodified guanine, G-AF adopts a conformation that allows it to form Watson-Crick hydrogen bonds with an opposing cytosine that results in protrusion of the bulky fluorene moiety into the major groove. Although incorporation opposite G-AF is observed, the C:G-AF base pair induces distortions to the polymerase active site that slow translesion synthesis.
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[[Category: Geobacillus stearothermophilus]]
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[[Category: Large Structures]]
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==About this Structure==
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[[Category: Becherel OJ]]
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Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1UA1 OCA].
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[[Category: Beese LS]]
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[[Category: Fuchs RPP]]
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==Reference==
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[[Category: Hsu GW]]
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Observing translesion synthesis of an aromatic amine DNA adduct by a high-fidelity DNA polymerase., Hsu GW, Kiefer JR, Burnouf D, Becherel OJ, Fuchs RP, Beese LS, J Biol Chem. 2004 Nov 26;279(48):50280-5. Epub 2004 Sep 22. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15385534 15385534]
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[[Category: Kiefer JR]]
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[[Category: DNA-directed DNA polymerase]]
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[[Category: Becherel, O J.]]
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[[Category: Beese, L S.]]
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[[Category: Fuchs, R P.P.]]
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[[Category: Hsu, G W.]]
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[[Category: Kiefer, J R.]]
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[[Category: Aminofluorene]]
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[[Category: Aromatic amine]]
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[[Category: Dna lesion]]
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[[Category: Dna polymerase i]]
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[[Category: Dna replication]]
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[[Category: Klenow fragment]]
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[[Category: Protein-dna complex]]
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[[Category: Translation replication]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 10:57:14 2008''
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Current revision

Structure of aminofluorene adduct paired opposite cytosine at the polymerase active site.

PDB ID 1ua1

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