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1q4w

From Proteopedia

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{{Seed}}
 
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[[Image:1q4w.png|left|200px]]
 
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==CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-3H-QUINAZOLIN-4-ONE==
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The line below this paragraph, containing "STRUCTURE_1q4w", creates the "Structure Box" on the page.
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<StructureSection load='1q4w' size='340' side='right'caption='[[1q4w]], [[Resolution|resolution]] 1.93&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'>[[1q4w]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Zymomonas_mobilis Zymomonas mobilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q4W OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Q4W 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]] 1.93&#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=DQU:2,6-DIAMINO-3H-QUINAZOLIN-4-ONE'>DQU</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
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{{STRUCTURE_1q4w| PDB=1q4w | 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=1q4w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q4w OCA], [https://pdbe.org/1q4w PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1q4w RCSB], [https://www.ebi.ac.uk/pdbsum/1q4w PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1q4w ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/TGT_ZYMMO TGT_ZYMMO] Exchanges the guanine residue with 7-aminomethyl-7-deazaguanine in tRNAs with GU(N) anticodons (tRNA-Asp, -Asn, -His and -Tyr). After this exchange, a cyclopentendiol moiety is attached to the 7-aminomethyl group of 7-deazaguanine, resulting in the hypermodified nucleoside queuosine (Q) (7-(((4,5-cis-dihydroxy-2-cyclopenten-1-yl)amino)methyl)-7-deazaguanosine).[HAMAP-Rule:MF_00168]
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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/q4/1q4w_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=1q4w 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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The enzyme tRNA-guanine transglycosylase (TGT) is involved in the pathogenicity of Shigellae. As the crystal structure of this protein is known, it is a putative target for the structure-based design of inhibitors. Here we report a crystallographic study of several new ligands exhibiting a 2,6-diamino-3H-quinazolin-4-one scaffold, which has been shown recently to be a promising template for TGT-inhibitors. Crystal structure analysis of these complexes has revealed an unexpected movement of the side-chain of Asp102. A detailed analysis of the water network disrupted by this rotation has lead to the derivation of a new composite pharmacophore. A virtual screening has been performed based on this pharmacophore hypothesis and several new inhibitors of micromolar binding affinity with new skeletons have been discovered.
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===CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-3H-QUINAZOLIN-4-ONE===
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Crystallographic study of inhibitors of tRNA-guanine transglycosylase suggests a new structure-based pharmacophore for virtual screening.,Brenk R, Meyer EA, Reuter K, Stubbs MT, Garcia GA, Diederich F, Klebe G J Mol Biol. 2004 Apr 16;338(1):55-75. PMID:15050823<ref>PMID:15050823</ref>
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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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<div class="pdbe-citations 1q4w" style="background-color:#fffaf0;"></div>
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==See Also==
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The line below this paragraph, {{ABSTRACT_PUBMED_15050823}}, adds the Publication Abstract to the page
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*[[TRNA-guanine transglycosylase 3D structures|TRNA-guanine transglycosylase 3D structures]]
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(as it appears on PubMed at http://www.pubmed.gov), where 15050823 is the PubMed ID number.
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== References ==
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<references/>
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{{ABSTRACT_PUBMED_15050823}}
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__TOC__
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</StructureSection>
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==About this Structure==
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[[Category: Large Structures]]
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1Q4W is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Zymomonas_mobilis Zymomonas mobilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q4W OCA].
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==Reference==
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Crystallographic study of inhibitors of tRNA-guanine transglycosylase suggests a new structure-based pharmacophore for virtual screening., Brenk R, Meyer EA, Reuter K, Stubbs MT, Garcia GA, Diederich F, Klebe G, J Mol Biol. 2004 Apr 16;338(1):55-75. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15050823 15050823]
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[[Category: Queuine tRNA-ribosyltransferase]]
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[[Category: Single protein]]
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[[Category: Zymomonas mobilis]]
[[Category: Zymomonas mobilis]]
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[[Category: Brenk, R.]]
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[[Category: Brenk R]]
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[[Category: Garcia, G A.]]
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[[Category: Garcia GA]]
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[[Category: Klebe, G.]]
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[[Category: Klebe G]]
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[[Category: Meyer, E.]]
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[[Category: Meyer E]]
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[[Category: Reuter, K.]]
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[[Category: Reuter K]]
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[[Category: Stubbs, M T.]]
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[[Category: Stubbs MT]]
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[[Category: Transferase]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 16:08:32 2008''
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Current revision

CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-3H-QUINAZOLIN-4-ONE

PDB ID 1q4w

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