3mex
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of MexR in oxidized state== | |
| + | <StructureSection load='3mex' size='340' side='right'caption='[[3mex]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3mex]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Pseudomonas_aeruginosa_PAO1 Pseudomonas aeruginosa PAO1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MEX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3MEX 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]] 2.1Å</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=3mex FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mex OCA], [https://pdbe.org/3mex PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3mex RCSB], [https://www.ebi.ac.uk/pdbsum/3mex PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3mex ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/MEXR_PSEAE MEXR_PSEAE] Repressor of the mexAB-oprM multidrug resistance operon. Also represses its own expression. Many variants lead to increased expression of the mexAB-oprM operon. | ||
| + | == 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/me/3mex_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=3mex ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | MexR functions as the primary regulator of the mexAB-oprM multidrug efflux expression in Pseudomonas aeruginosa. It has been shown that MexR senses oxidative stress by interprotomer disulphide bond formation between redox-active cysteines. This oxidation induces MexR to dissociate from the promoter DNA, thus activating the transcriptional expression of efflux pump genes. In this study, we present the crystal structure of MexR in its oxidized form at a resolution of 2.1 A. This crystal structure reveals the mechanism by which oxidative signal allosterically derepresses the MexR-controlled transcription activation. | ||
| - | + | Structural insight into the oxidation-sensing mechanism of the antibiotic resistance of regulator MexR.,Chen H, Yi C, Zhang J, Zhang W, Ge Z, Yang CG, He C EMBO Rep. 2010 Sep;11(9):685-90. Epub 2010 Jul 9. PMID:20616806<ref>PMID:20616806</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 3mex" style="background-color:#fffaf0;"></div> | |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Pseudomonas aeruginosa PAO1]] | ||
| + | [[Category: Chen H]] | ||
| + | [[Category: He C]] | ||
| + | [[Category: Yang C-G]] | ||
| + | [[Category: Yi C]] | ||
| + | [[Category: Zhang J]] | ||
| + | [[Category: Zhang W]] | ||
Current revision
Crystal structure of MexR in oxidized state
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Categories: Large Structures | Pseudomonas aeruginosa PAO1 | Chen H | He C | Yang C-G | Yi C | Zhang J | Zhang W
