2w53

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[[Image:2w53.png|left|200px]]
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==STRUCTURE OF SMET, THE REPRESSOR OF THE STENOTROPHOMONAS MALTOPHILIA MULTIDRUG EFFLUX PUMP SMEDEF.==
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<StructureSection load='2w53' size='340' side='right' caption='[[2w53]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[2w53]] 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=2W53 OCA]. <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><br>
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<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </span></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=2w53 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w53 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2w53 RCSB], [http://www.ebi.ac.uk/pdbsum/2w53 PDBsum]</span></td></tr>
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<table>
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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/w5/2w53_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/chain_selection.php?pdb_ID=2ata 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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Stenotrophomonas maltophilia is an opportunistic pathogen characterized for its intrinsic low susceptibility to several antibiotics. Part of this low susceptibility relies on the expression of chromosomally encoded multidrug efflux pumps, with SmeDEF being the most relevant antibiotic resistance efflux pump so far studied in this bacterial species. Expression of smeDEF is down-regulated by the SmeT repressor, encoded upstream smeDEF, in its complementary DNA strand. In the present article we present the crystal structure of SmeT and analyze its interactions with its cognate operator. Like other members of the TetR family of transcriptional repressors, SmeT behaves as a dimer and presents some common structural features with other TetR proteins like TtgR, QacR, and TetR. Differing from other TetR proteins for which the structure is available, SmeT turned out to have two extensions at the N and C termini that might be relevant for its function. Besides, SmeT presents the smallest binding pocket so far described in the TetR family of transcriptional repressors, which may correlate with a specific type and range of effectors. In vitro studies revealed that SmeT binds to a 28-bp pseudopalindromic region, forming two complexes. This operator region was found to overlap the promoters of smeT and smeDEF. This finding is consistent with a role for SmeT simultaneously down-regulating smeT and smeDEF transcription, likely by steric hindrance on RNA polymerase binding to DNA.
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Structural and functional analysis of SmeT, the repressor of the Stenotrophomonas maltophilia multidrug efflux pump SmeDEF.,Hernandez A, Mate MJ, Sanchez-Diaz PC, Romero A, Rojo F, Martinez JL J Biol Chem. 2009 May 22;284(21):14428-38. Epub 2009 Mar 26. PMID:19324881<ref>PMID:19324881</ref>
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The line below this paragraph, containing "STRUCTURE_2w53", creates the "Structure Box" on the page.
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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or leave the SCENE parameter empty for the default display.
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{{STRUCTURE_2w53| PDB=2w53 | SCENE= }}
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===STRUCTURE OF SMET, THE REPRESSOR OF THE STENOTROPHOMONAS MALTOPHILIA MULTIDRUG EFFLUX PUMP SMEDEF.===
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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_19324881}}, 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 19324881 is the PubMed ID number.
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</StructureSection>
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{{ABSTRACT_PUBMED_19324881}}
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==About this Structure==
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[[2w53]] 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=2W53 OCA].
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==Reference==
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<ref group="xtra">PMID:019324881</ref><references group="xtra"/>
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[[Category: Stenotrophomonas maltophilia]]
[[Category: Stenotrophomonas maltophilia]]
[[Category: Hernandez, A.]]
[[Category: Hernandez, A.]]

Revision as of 08:39, 7 May 2014

STRUCTURE OF SMET, THE REPRESSOR OF THE STENOTROPHOMONAS MALTOPHILIA MULTIDRUG EFFLUX PUMP SMEDEF.

2w53, resolution 2.00Å

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OCA

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