Crystal structure of the DNA binding domain of CpxR from E. coli

Experimental Data Snapshot

  • Resolution: 1.15 Å
  • R-Value Free: 0.156 
  • R-Value Work: 0.128 
  • R-Value Observed: 0.129 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Conformational plasticity of the response regulator CpxR, a key player in Gammaproteobacteria virulence and drug-resistance.

Mechaly, A.E.Haouz, A.Sassoon, N.Buschiazzo, A.Betton, J.M.Alzari, P.M.

(2018) J Struct Biol 204: 165-171

  • DOI: https://doi.org/10.1016/j.jsb.2018.08.001
  • Primary Citation of Related Structures:  
    4UHS, 4UHT

  • PubMed Abstract: 

    The transcriptional regulator CpxR mediates an adaptive response to envelope stress, tightly linked to virulence and antibiotics resistance in several Gammaproteobacteria pathogens. In this work, we integrated crystallographic and small-angle X-ray scattering data to gain insights into the structure and conformational plasticity of CpxR from Escherichia coli. CpxR dimerizes through two alternative interaction surfaces. Moreover, widely different CpxR conformations coexist in solution, from compact to fully extended ones. The possible functional implications of these structural features are discussed.

  • Organizational Affiliation

    Institut Pasteur, Plate-forme de Cristallographie, CNRS UMR 3528, 25 rue du Dr. Roux, 75724 Paris CEDEX 15, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B
102Escherichia coli K-12Mutation(s): 1 
Gene Names: cpxRyiiAb3912JW3883
Find proteins for P0AE88 (Escherichia coli (strain K12))
Explore P0AE88 
Go to UniProtKB:  P0AE88
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0AE88
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.15 Å
  • R-Value Free: 0.156 
  • R-Value Work: 0.128 
  • R-Value Observed: 0.129 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 39.119α = 89.8
b = 39.88β = 75.13
c = 40.94γ = 61.04
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-04-13
    Type: Initial release
  • Version 1.1: 2018-09-12
    Changes: Data collection, Database references
  • Version 1.2: 2018-10-24
    Changes: Data collection, Database references