3p9t

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[[Image:3p9t.png|left|200px]]
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==SmeT-Triclosan complex==
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<StructureSection load='3p9t' size='340' side='right' caption='[[3p9t]], [[Resolution|resolution]] 2.02&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3p9t]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Stenotrophomonas_maltophilia Stenotrophomonas maltophilia]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3P9T OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3P9T FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TCL:TRICLOSAN'>TCL</scene><br>
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<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">smeT ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=40324 Stenotrophomonas maltophilia])</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3p9t FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3p9t OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3p9t RCSB], [http://www.ebi.ac.uk/pdbsum/3p9t PDBsum]</span></td></tr>
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<table>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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The wide utilization of biocides poses a concern on the impact of these compounds on natural bacterial populations. Furthermore, it has been demonstrated that biocides can select, at least in laboratory experiments, antibiotic resistant bacteria. This situation has raised concerns, not just on scientists and clinicians, but also on regulatory agencies, which are demanding studies on the impact that the utilization of biocides may have on the development on resistance and consequently on the treatment of infectious diseases and on human health. In the present article, we explored the possibility that the widely used biocide triclosan might induce antibiotic resistance using as a model the opportunistic pathogen Stenotrophomonas maltophilia. Biochemical, functional and structural studies were performed, focusing on SmeDEF, the most relevant antibiotic- and triclosan-removing multidrug efflux pump of S. maltophilia. Expression of smeDEF is regulated by the repressor SmeT. Triclosan released SmeT from its operator and induces the expression of smeDEF, thus reducing the susceptibility of S. maltophilia to antibiotics in the presence of the biocide. The structure of SmeT bound to triclosan is described. Two molecules of triclosan were found to bind to one subunit of the SmeT homodimer. The binding of the biocide stabilizes the N terminal domain of both subunits in a conformation unable to bind DNA. To our knowledge this is the first crystal structure obtained for a transcriptional regulator bound to triclosan. This work provides the molecular basis for understanding the mechanisms allowing the induction of phenotypic resistance to antibiotics by triclosan.
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The Binding of Triclosan to SmeT, the Repressor of the Multidrug Efflux Pump SmeDEF, Induces Antibiotic Resistance in Stenotrophomonas maltophilia.,Hernandez A, Ruiz FM, Romero A, Martinez JL PLoS Pathog. 2011 Jun;7(6):e1002103. Epub 2011 Jun 30. PMID:21738470<ref>PMID:21738470</ref>
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The line below this paragraph, containing "STRUCTURE_3p9t", creates the "Structure Box" on the page.
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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{{STRUCTURE_3p9t| PDB=3p9t | SCENE= }}
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===SmeT-Triclosan complex===
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
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</div>
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== References ==
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<references/>
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The line below this paragraph, {{ABSTRACT_PUBMED_21738470}}, adds the Publication Abstract to the page
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__TOC__
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(as it appears on PubMed at http://www.pubmed.gov), where 21738470 is the PubMed ID number.
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</StructureSection>
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{{ABSTRACT_PUBMED_21738470}}
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==About this Structure==
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[[3p9t]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Stenotrophomonas_maltophilia Stenotrophomonas maltophilia]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3P9T OCA].
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==Reference==
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<ref group="xtra">PMID:021738470</ref><references group="xtra"/>
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[[Category: Stenotrophomonas maltophilia]]
[[Category: Stenotrophomonas maltophilia]]
[[Category: Hernandez, A.]]
[[Category: Hernandez, A.]]

Revision as of 05:22, 4 June 2014

SmeT-Triclosan complex

3p9t, resolution 2.02Å

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