2hj9: Difference between revisions

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[[Image:2hj9.gif|left|200px]]


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==Crystal structure of the Autoinducer-2-bound form of Vibrio harveyi LuxP complexed with the periplasmic domain of LuxQ==
The line below this paragraph, containing "STRUCTURE_2hj9", creates the "Structure Box" on the page.
<StructureSection load='2hj9' size='340' side='right'caption='[[2hj9]], [[Resolution|resolution]] 2.34&Aring;' scene=''>
You may change the PDB parameter (which sets the PDB file loaded into the applet)
== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[2hj9]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Vibrio_harveyi Vibrio harveyi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HJ9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HJ9 FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.34&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AI2:3A-METHYL-5,6-DIHYDRO-FURO[2,3-D][1,3,2]DIOXABOROLE-2,2,6,6A-TETRAOL'>AI2</scene></td></tr>
{{STRUCTURE_2hj9|  PDB=2hj9  |  SCENE= }}
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2hj9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hj9 OCA], [https://pdbe.org/2hj9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hj9 RCSB], [https://www.ebi.ac.uk/pdbsum/2hj9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hj9 ProSAT]</span></td></tr>
 
</table>
'''Crystal structure of the Autoinducer-2-bound form of Vibrio harveyi LuxP complexed with the periplasmic domain of LuxQ'''
== Function ==
 
[https://www.uniprot.org/uniprot/LUXP_VIBHA LUXP_VIBHA] Binds to the signaling molecule autoinducer 2 (AI-2), a furanosyl borate diester, (3a-methyl-5,6-dihydrofuro-[2,3d][1,3,2]dioxaborole-2,2,6,6a-tetraol). This complex then interacts with the LuxQ sensor protein.
 
== Evolutionary Conservation ==
==Overview==
[[Image:Consurf_key_small.gif|200px|right]]
Bacteria sense their environment using receptors of the histidine sensor kinase family, but how kinase activity is regulated by ligand binding is not well understood. Autoinducer-2 (AI-2), a secreted signaling molecule originally identified in studies of the marine bacterium Vibrio harveyi, regulates quorum-sensing responses and allows communication between different bacterial species. AI-2 signal transduction in V. harveyi requires the integral membrane receptor LuxPQ, comprised of periplasmic binding protein (LuxP) and histidine sensor kinase (LuxQ) subunits. Combined X-ray crystallographic and functional studies show that AI-2 binding causes a major conformational change within LuxP, which in turn stabilizes a quaternary arrangement in which two LuxPQ monomers are asymmetrically associated. We propose that formation of this asymmetric quaternary structure is responsible for repressing the kinase activity of both LuxQ subunits and triggering the transition of V. harveyi into quorum-sensing mode.
Check<jmol>
 
  <jmolCheckbox>
==About this Structure==
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/hj/2hj9_consurf.spt"</scriptWhenChecked>
2HJ9 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Vibrio_harveyi Vibrio harveyi]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HJ9 OCA].  
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
 
    <text>to colour the structure by Evolutionary Conservation</text>
==Reference==
  </jmolCheckbox>
Ligand-induced asymmetry in histidine sensor kinase complex regulates quorum sensing., Neiditch MB, Federle MJ, Pompeani AJ, Kelly RC, Swem DL, Jeffrey PD, Bassler BL, Hughson FM, Cell. 2006 Sep 22;126(6):1095-108. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16990134 16990134]
</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=2hj9 ConSurf].
[[Category: Protein complex]]
<div style="clear:both"></div>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Vibrio harveyi]]
[[Category: Vibrio harveyi]]
[[Category: Hughson, F M.]]
[[Category: Hughson FM]]
[[Category: Neiditch, M B.]]
[[Category: Neiditch MB]]
[[Category: Histidine sensor kinase]]
[[Category: Periplasmic binding protein]]
[[Category: Quorum sensing]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May  4 06:21:38 2008''
Retrieved from "https://proteopedia.org/2hj9"