3QP5

Crystal structure of CviR bound to antagonist chlorolactone (CL)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.249 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.263 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A strategy for antagonizing quorum sensing.

Chen, G.Swem, L.R.Swem, D.L.Stauff, D.L.O'Loughlin, C.T.Jeffrey, P.D.Bassler, B.L.Hughson, F.M.

(2011) Mol.Cell 42: 199-209

  • DOI: 10.1016/j.molcel.2011.04.003
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Quorum-sensing bacteria communicate via small molecules called autoinducers to coordinate collective behaviors. Because quorum sensing controls virulence factor expression in many clinically relevant pathogens, membrane-permeable quorum sensing antag ...

    Quorum-sensing bacteria communicate via small molecules called autoinducers to coordinate collective behaviors. Because quorum sensing controls virulence factor expression in many clinically relevant pathogens, membrane-permeable quorum sensing antagonists that prevent population-wide expression of virulence genes offer a potential route to novel antibacterial therapeutics. Here, we report a strategy for inhibiting quorum-sensing receptors of the widespread LuxR family. Structure-function studies with natural and synthetic ligands demonstrate that the dimeric LuxR-type transcription factor CviR from Chromobacterium violaceum is potently antagonized by molecules that bind in place of the native acylated homoserine lactone autoinducer, provided that they stabilize a closed conformation. In such conformations, each of the two DNA-binding domains interacts with the ligand-binding domain of the opposing monomer. Consequently, the DNA-binding helices are held apart by ∼60 Å, twice the ∼30 Å separation required for operator binding. This approach may represent a general strategy for the inhibition of multidomain proteins.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CviR transcriptional regulator
A, B, C, D
265Chromobacterium violaceumMutation(s): 0 
Gene Names: cviR
Find proteins for D3W065 (Chromobacterium violaceum)
Go to UniProtKB:  D3W065
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HLC
Query on HLC

Download SDF File 
Download CCD File 
A, B, C, D
4-(4-chlorophenoxy)-N-[(3S)-2-oxotetrahydrofuran-3-yl]butanamide
C14 H16 Cl N O4
BKVYYPQMGSVOHB-LBPRGKRZSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
HLCIC50: 377 nM (100) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.249 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.263 
  • Space Group: H 3
Unit Cell:
Length (Å)Angle (°)
a = 169.318α = 90.00
b = 169.318β = 90.00
c = 99.844γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
PHENIXrefinement
PHASERphasing
HKL-2000data collection
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-03-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance