1MU4

CRYSTAL STRUCTURE AT 1.8 ANGSTROMS OF THE BACILLUS SUBTILIS CATABOLITE REPRESSION HISTIDINE CONTAINING PROTEIN (CRH)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Dimerization of Crh by reversible 3D Domain Swapping Induces Structural Adjustments to its monomeric homologue HPR

Juy, M.R.Penin, F.Favier, A.Galinier, A.Montserret, R.Haser, R.Deutscher, J.Bockmann, A.

(2003) J Mol Biol 332: 767-776

  • DOI: https://doi.org/10.1016/s0022-2836(03)00918-5
  • Primary Citation of Related Structures:  
    1MU4

  • PubMed Abstract: 

    The crystal structure of the regulatory protein Crh from Bacillus subtilis was solved at 1.8A resolution and showed an intertwined dimer formed by N-terminal beta1-strand swapping of two monomers. Comparison with the monomeric NMR structure of Crh revealed a domain swap induced conformational rearrangement of the putative interaction site with the repressor CcpA. The resulting conformation closely resembles that observed for the monomeric Crh homologue HPr, indicating that the Crh dimer is the active form binding to CcpA. An analogous dimer of HPr can be constructed without domain swapping, suggesting that HPr may dimerize upon binding to CcpA. Our data suggest that reversible 3D domain swapping of Crh might be an efficient regulatory mechanism to modulate its activity.


  • Organizational Affiliation

    Institut de Biologie et Chimie des Protéines, C.N.R.S UMR 5086, 69367 Cedex 07, Lyon, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
HPr-like protein crh
A, B
87Bacillus subtilisMutation(s): 0 
UniProt
Find proteins for O06976 (Bacillus subtilis (strain 168))
Explore O06976 
Go to UniProtKB:  O06976
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO06976
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.197 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.179 
  • Space Group: P 43 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 68.85α = 90
b = 68.85β = 90
c = 119.86γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-10-07
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-14
    Changes: Data collection, Database references, Derived calculations, Refinement description