2hqu

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[[Image:2hqu.png|left|200px]]
 
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{{STRUCTURE_2hqu| PDB=2hqu | SCENE= }}
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==Human dUTPase in complex with alpha,beta-iminodUTP and magnesium ion==
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<StructureSection load='2hqu' size='340' side='right'caption='[[2hqu]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2hqu]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HQU OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HQU FirstGlance]. <br>
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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]] 2.2&#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=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=DUP:2-DEOXYURIDINE+5-ALPHA,BETA-IMIDO-TRIPHOSPHATE'>DUP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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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=2hqu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hqu OCA], [https://pdbe.org/2hqu PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hqu RCSB], [https://www.ebi.ac.uk/pdbsum/2hqu PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hqu ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/DUT_HUMAN DUT_HUMAN] This enzyme is involved in nucleotide metabolism: it produces dUMP, the immediate precursor of thymidine nucleotides and it decreases the intracellular concentration of dUTP so that uracil cannot be incorporated into DNA.<ref>PMID:8805593</ref>
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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/hq/2hqu_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=2hqu ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Human dUTPase, essential for DNA integrity, is an important survival factor for cancer cells. We determined the crystal structure of the enzyme:alpha,beta-imino-dUTP:Mg complex and performed equilibrium binding experiments in solution. Ordering of the C-terminus upon the active site induces close juxtaposition of the incoming nucleophile attacker water oxygen and the alpha-phosphorus of the substrate, decreasing their distance below the van der Waals limit. Complex interactions of the C-terminus with both substrate and product were observed via a specifically designed tryptophan sensor, suitable for further detailed kinetic and ligand binding studies. Results explain the key functional role of the C-terminus.
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===Human dUTPase in complex with alpha,beta-iminodUTP and magnesium ion===
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Active site closure facilitates juxtaposition of reactant atoms for initiation of catalysis by human dUTPase.,Varga B, Barabas O, Kovari J, Toth J, Hunyadi-Gulyas E, Klement E, Medzihradszky KF, Tolgyesi F, Fidy J, Vertessy BG FEBS Lett. 2007 Oct 2;581(24):4783-8. Epub 2007 Sep 12. PMID:17880943<ref>PMID:17880943</ref>
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{{ABSTRACT_PUBMED_17880943}}
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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==About this Structure==
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<div class="pdbe-citations 2hqu" style="background-color:#fffaf0;"></div>
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[[2hqu]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HQU OCA].
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==See Also==
==See Also==
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*[[Deoxyuridine 5'-triphosphate nucleotidohydrolase|Deoxyuridine 5'-triphosphate nucleotidohydrolase]]
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*[[DUTPase 3D structures|DUTPase 3D structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:017880943</ref><ref group="xtra">PMID:008805593</ref><ref group="xtra">PMID:018837522</ref><references group="xtra"/>
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__TOC__
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: DUTP diphosphatase]]
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[[Category: Large Structures]]
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[[Category: Barabas, O.]]
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[[Category: Barabas O]]
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[[Category: Varga, B.]]
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[[Category: Varga B]]
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[[Category: Vertessy, B G.]]
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[[Category: Vertessy BG]]
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[[Category: Hydrolase]]
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[[Category: Jelly-roll]]
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[[Category: Protein-substrate analogue ligand complex]]
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Current revision

Human dUTPase in complex with alpha,beta-iminodUTP and magnesium ion

PDB ID 2hqu

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