2HJ9

Crystal structure of the Autoinducer-2-bound form of Vibrio harveyi LuxP complexed with the periplasmic domain of LuxQ


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.210 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Ligand-induced asymmetry in histidine sensor kinase complex regulates quorum sensing.

Neiditch, M.B.Federle, M.J.Pompeani, A.J.Kelly, R.C.Swem, D.L.Jeffrey, P.D.Bassler, B.L.Hughson, F.M.

(2006) Cell 126: 1095-1108

  • DOI: 10.1016/j.cell.2006.07.032
  • Primary Citation of Related Structures:  
    2HJE, 2HJ9

  • PubMed Abstract: 
  • 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 studie ...

    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.


    Organizational Affiliation

    Department of Molecular Biology, Princeton University, Princeton, NJ 08544, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Autoinducer 2-binding periplasmic protein luxPAB339Vibrio harveyiMutation(s): 0 
Gene Names: luxP
Find proteins for P54300 (Vibrio harveyi)
Explore P54300 
Go to UniProtKB:  P54300
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Autoinducer 2 sensor kinase/phosphatase luxQCD221Vibrio harveyiMutation(s): 0 
Gene Names: luxQ
EC: 3.1.3 (PDB Primary Data), 2.7.13.3 (UniProt)
Find proteins for P54302 (Vibrio harveyi)
Explore P54302 
Go to UniProtKB:  P54302
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AI2
Query on AI2

Download Ideal Coordinates CCD File 
A, B
3A-METHYL-5,6-DIHYDRO-FURO[2,3-D][1,3,2]DIOXABOROLE-2,2,6,6A-TETRAOL
C5 H10 B O7
ACKRRKSNOOISSG-VPENINKCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.34 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.210 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.916α = 90
b = 83.916β = 90
c = 365.328γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-09-26
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance