3cg5
From Proteopedia
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| - | [[Image:3cg5.png|left|200px]] | ||
| - | + | ==Crystal Structure of the Covalent Adduct Formed between TB B-lactamase and Clavulanate== | |
| + | <StructureSection load='3cg5' size='340' side='right'caption='[[3cg5]], [[Resolution|resolution]] 1.70Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3cg5]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mycobacterium_tuberculosis Mycobacterium tuberculosis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3CG5 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3CG5 FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.7Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ISS:(2E)-3-[(4-HYDROXY-2-OXOBUTYL)AMINO]PROP-2-ENAL'>ISS</scene>, <scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3cg5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3cg5 OCA], [https://pdbe.org/3cg5 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3cg5 RCSB], [https://www.ebi.ac.uk/pdbsum/3cg5 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3cg5 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/BLAC_MYCTU BLAC_MYCTU] | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cg/3cg5_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=3cg5 ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The intrinsic resistance of Mycobacterium tuberculosis to the beta-lactam class of antibiotics arises from a chromosomally encoded, extended spectrum, class A beta-lactamase, BlaC. Herein, we report the X-ray crystallographic structure of BlaC inhibited with clavulanate at a resolution of 1.7 A with an R-factor value of 0.180 and R-free value of 0.212 for the m/ z +154 clavulanate-derived fragment observed in the active site. Structural evidence reveals the presence of hydrogen bonds to the C1 carbonyl along with a coplanar arrangement of C1, C2, C3, and N4, which favors enolization to generate a trans-alpha,beta-eneamine, stabilizing the +154 adduct from hydrolysis. The irreversible inhibition of BlaC suggests that treatment of M. tuberculosis with a combination of a beta-lactam antibiotic and clavulanate may lead to rapid bactericidal activity. | ||
| - | + | Structure of the covalent adduct formed between Mycobacterium tuberculosis beta-lactamase and clavulanate.,Tremblay LW, Hugonnet JE, Blanchard JS Biochemistry. 2008 May 13;47(19):5312-6. Epub 2008 Apr 19. PMID:18422342<ref>PMID:18422342</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 3cg5" style="background-color:#fffaf0;"></div> | |
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==See Also== | ==See Also== | ||
| - | *[[Beta-lactamase|Beta-lactamase]] | + | *[[Beta-lactamase 3D structures|Beta-lactamase 3D structures]] |
| - | + | == References == | |
| - | == | + | <references/> |
| - | < | + | __TOC__ |
| - | [[Category: | + | </StructureSection> |
| + | [[Category: Large Structures]] | ||
[[Category: Mycobacterium tuberculosis]] | [[Category: Mycobacterium tuberculosis]] | ||
| - | [[Category: Blanchard | + | [[Category: Blanchard JS]] |
| - | [[Category: Hugonnet | + | [[Category: Hugonnet JE]] |
| - | [[Category: Tremblay | + | [[Category: Tremblay LW]] |
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Current revision
Crystal Structure of the Covalent Adduct Formed between TB B-lactamase and Clavulanate
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