1OV9

Crystal structure of the N-terminal dimerisation domain of VicH, the H-NS protein from Vibrio cholerae


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The Crystal Structure of the N-terminal dimerisation domain of VicH, the H-NS-like protein of Vibrio Cholerae

Cerdan, R.Bloch, V.Yang, Y.Bertin, P.Dumas, C.Rimsky, S.Kochoyan, M.Arold, S.T.

(2003) J.Mol.Biol. 334: 179-185


  • PubMed Abstract: 
  • The histone-like nucleoid structuring (H-NS) protein is a global modulator of gene expression in Gram-negative bacteria. VicH, the H-NS protein of Vibrio cholerae, regulates the expression of certain major virulence determinants implicated in the pat ...

    The histone-like nucleoid structuring (H-NS) protein is a global modulator of gene expression in Gram-negative bacteria. VicH, the H-NS protein of Vibrio cholerae, regulates the expression of certain major virulence determinants implicated in the pathogenesis of cholera. We present here the 2.5A crystal structure of the N-terminal oligomerisation domain of VicH (VicH_Nt). VicH_Nt adopts the same fold and dimeric assembly as the NMR structure of Escherichia coli H-NS_Nt, thus validating this fold against conflicting data. The structural similarity of V.cholerae VicH_Nt and E.coli H-NS_Nt, despite differences in origin, system of expression, experimental conditions and techniques used, indicates that the fold determined in our studies is robust to experimental conditions. Structural analysis and homology modelling were carried out to further elucidate the molecular basis of the functional polyvalence of the N-terminal domain. Our analysis of members of the H-NS superfamily supports the suggestion that the oligomerisation function of H-NS_Nt is conserved even in more distantly related proteins.


    Organizational Affiliation

    Centre de Biochimie Structurale, CNRS-UMR 5048, INSERM-U554, Université Montpellier I, 29 rue de Navacelles 34090 Montpellier, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
VicH protein
A, B
50Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)N/A
Find proteins for Q9KSX6 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961))
Go to UniProtKB:  Q9KSX6
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.233 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 37.085α = 90.00
b = 49.192β = 90.00
c = 101.389γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
MOSFLMdata reduction
SCALAdata scaling
CNSrefinement
EPMRphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-25
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-11-16
    Type: Atomic model