1q65: Difference between revisions
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==CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-8-(2-dimethylaminoethylsulfanylmethyl)-3H-QUINAZOLIN-4-ONE crystallized at pH 5.5== | ==CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-8-(2-dimethylaminoethylsulfanylmethyl)-3H-QUINAZOLIN-4-ONE crystallized at pH 5.5== | ||
<StructureSection load='1q65' size='340' side='right' caption='[[1q65]], [[Resolution|resolution]] 2.10Å' scene=''> | <StructureSection load='1q65' size='340' side='right'caption='[[1q65]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1q65]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"achromobacter_anaerobium"_(sic)_shimwell_1937 "achromobacter anaerobium" (sic) shimwell 1937]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q65 OCA]. For a <b>guided tour on the structure components</b> use [http:// | <table><tr><td colspan='2'>[[1q65]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"achromobacter_anaerobium"_(sic)_shimwell_1937 "achromobacter anaerobium" (sic) shimwell 1937]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q65 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1Q65 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BHB:2,6-DIAMINO-8-(2-DIMETHYLAMINOETHYLSULFANYLMETHYL)-3H-QUINAZOLIN-4-ONE'>BHB</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BHB:2,6-DIAMINO-8-(2-DIMETHYLAMINOETHYLSULFANYLMETHYL)-3H-QUINAZOLIN-4-ONE'>BHB</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1pud|1pud]], [[1q4w|1q4w]], [[1q63|1q63]], [[1q66|1q66]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1pud|1pud]], [[1q4w|1q4w]], [[1q63|1q63]], [[1q66|1q66]]</td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TGT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=542 "Achromobacter anaerobium" (sic) Shimwell 1937])</td></tr> | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TGT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=542 "Achromobacter anaerobium" (sic) Shimwell 1937])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/tRNA-guanine(34)_transglycosylase tRNA-guanine(34) transglycosylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.29 2.4.2.29] </span></td></tr> | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/tRNA-guanine(34)_transglycosylase tRNA-guanine(34) transglycosylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.4.2.29 2.4.2.29] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http:// | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1q65 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q65 OCA], [http://pdbe.org/1q65 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1q65 RCSB], [http://www.ebi.ac.uk/pdbsum/1q65 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1q65 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
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</div> | </div> | ||
<div class="pdbe-citations 1q65" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 1q65" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[TRNA-guanine transglycosylase|TRNA-guanine transglycosylase]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Brenk, R]] | [[Category: Brenk, R]] | ||
[[Category: Garcia, G A]] | [[Category: Garcia, G A]] | ||
Revision as of 09:26, 19 August 2020
CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-8-(2-dimethylaminoethylsulfanylmethyl)-3H-QUINAZOLIN-4-ONE crystallized at pH 5.5CRYSTAL STRUCTURE OF TGT IN COMPLEX WITH 2,6-DIAMINO-8-(2-dimethylaminoethylsulfanylmethyl)-3H-QUINAZOLIN-4-ONE crystallized at pH 5.5
Structural highlights
Function[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] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe 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. 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[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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