2uv0: Difference between revisions
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== | ==Structure of the P. aeruginosa LasR ligand-binding domain bound to its autoinducer== | ||
<StructureSection load='2uv0' size='340' side='right'caption='[[2uv0]], [[Resolution|resolution]] 1.80Å' scene=''> | |||
[[ | == Structural highlights == | ||
[[ | <table><tr><td colspan='2'>[[2uv0]] is a 4 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=2UV0 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2UV0 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]] 1.8Å</td></tr> | ||
[ | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=OHN:N-3-OXO-DODECANOYL-L-HOMOSERINE+LACTONE'>OHN</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=2uv0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2uv0 OCA], [https://pdbe.org/2uv0 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2uv0 RCSB], [https://www.ebi.ac.uk/pdbsum/2uv0 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2uv0 ProSAT]</span></td></tr> | ||
</table> | |||
[ | == Function == | ||
[ | [https://www.uniprot.org/uniprot/LASR_PSEAE LASR_PSEAE] Transcriptional activator of elastase structural gene (LasB). Binds to the PAI autoinducer. | ||
== 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/uv/2uv0_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=2uv0 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Many Gram-negative bacteria communicate via molecules called autoinducers to coordinate the activities of their populations. Such communication is termed quorum sensing and can regulate pathogenic virulence factor production and antimicrobial resistance. The quorum sensing system of Pseudomonas aeruginosa is currently the most intensively researched, because this bacterium is an opportunistic human pathogen annually responsible for the death of thousands of cystic fibrosis sufferers and many other immunocompromised individuals. Quorum sensing inhibitors can attenuate the pathogenicity of P. aeruginosa. Here we present the crystal structure of the P. aeruginosa LasR ligand-binding domain bound to its autoinducer 3-oxo-C(12)-acylhomoserine lactone. The structure is a symmetrical dimer, with each monomer exhibiting an alpha-beta-alpha fold similar to the TraR and SdiA quorum sensing proteins of Agrobacterium tumefaciens and Escherichia coli. The structure was determined up to 1.8-A resolution and reveals the atomic interactions between LasR and its autoinducer. The monomer structures of LasR, TraR, and SdiA are comparable but display differences in their quaternary organization. Inspection of their binding sites shows some unexpected variations resulting in quite different conformations of their bound autoinducers. We modeled interactions between LasR and various quorum sensing inhibitors, yielding insight into their possible mechanisms of action. The structure also provides a platform for the optimization, or de novo design, of quorum sensing inhibitors. | |||
Molecular insights into quorum sensing in the human pathogen Pseudomonas aeruginosa from the structure of the virulence regulator LasR bound to its autoinducer.,Bottomley MJ, Muraglia E, Bazzo R, Carfi A J Biol Chem. 2007 May 4;282(18):13592-600. Epub 2007 Mar 15. PMID:17363368<ref>PMID:17363368</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2uv0" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Transcriptional activator 3D structures|Transcriptional activator 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Pseudomonas aeruginosa PAO1]] | |||
[[Category: Bazzo R]] | |||
[[Category: Bottomley MJ]] | |||
[[Category: Carfi A]] | |||
[[Category: Muraglia E]] | |||
Latest revision as of 12:30, 6 November 2024
Structure of the P. aeruginosa LasR ligand-binding domain bound to its autoinducerStructure of the P. aeruginosa LasR ligand-binding domain bound to its autoinducer
Structural highlights
FunctionLASR_PSEAE Transcriptional activator of elastase structural gene (LasB). Binds to the PAI autoinducer. 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 PubMedMany Gram-negative bacteria communicate via molecules called autoinducers to coordinate the activities of their populations. Such communication is termed quorum sensing and can regulate pathogenic virulence factor production and antimicrobial resistance. The quorum sensing system of Pseudomonas aeruginosa is currently the most intensively researched, because this bacterium is an opportunistic human pathogen annually responsible for the death of thousands of cystic fibrosis sufferers and many other immunocompromised individuals. Quorum sensing inhibitors can attenuate the pathogenicity of P. aeruginosa. Here we present the crystal structure of the P. aeruginosa LasR ligand-binding domain bound to its autoinducer 3-oxo-C(12)-acylhomoserine lactone. The structure is a symmetrical dimer, with each monomer exhibiting an alpha-beta-alpha fold similar to the TraR and SdiA quorum sensing proteins of Agrobacterium tumefaciens and Escherichia coli. The structure was determined up to 1.8-A resolution and reveals the atomic interactions between LasR and its autoinducer. The monomer structures of LasR, TraR, and SdiA are comparable but display differences in their quaternary organization. Inspection of their binding sites shows some unexpected variations resulting in quite different conformations of their bound autoinducers. We modeled interactions between LasR and various quorum sensing inhibitors, yielding insight into their possible mechanisms of action. The structure also provides a platform for the optimization, or de novo design, of quorum sensing inhibitors. Molecular insights into quorum sensing in the human pathogen Pseudomonas aeruginosa from the structure of the virulence regulator LasR bound to its autoinducer.,Bottomley MJ, Muraglia E, Bazzo R, Carfi A J Biol Chem. 2007 May 4;282(18):13592-600. Epub 2007 Mar 15. PMID:17363368[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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