3E6B

OCPA complexed CprK (C200S)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Molecular basis of halorespiration control by CprK, a CRP-FNR type transcriptional regulator

Levy, C.Pike, K.Heyes, D.J.Joyce, M.G.Gabor, K.Smidt, H.van der Oost, J.Leys, D.

(2008) Mol.Microbiol. 70: 151-167

  • DOI: 10.1111/j.1365-2958.2008.06399.x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Certain bacteria are able to conserve energy via the reductive dehalogenation of halo-organic compounds in a respiration-type metabolism. The transcriptional regulator CprK from Desulfitobacterium spp. induces expression of halorespiratory genes upon ...

    Certain bacteria are able to conserve energy via the reductive dehalogenation of halo-organic compounds in a respiration-type metabolism. The transcriptional regulator CprK from Desulfitobacterium spp. induces expression of halorespiratory genes upon binding of o-chlorophenol ligands and is reversibly inactivated by oxygen through disulphide bond formation. We report crystal structures of D. hafniense CprK in the ligand-free (both oxidation states), ligand-bound (reduced) and DNA-bound states, making it the first member of the widespread CRP-FNR superfamily for which a complete structural description of both redox-dependent and allosteric molecular rearrangements is available. In conjunction with kinetic and thermodynamic ligand binding studies, we provide a model for the allosteric mechanisms underpinning transcriptional control. Amino acids that play a key role in this mechanism are not conserved in functionally distinct CRP-FNR members. This suggests that, despite significant structural homology, distinct allosteric mechanisms are used, enabling this protein family to control a very wide range of processes.


    Organizational Affiliation

    Manchester Interdisciplinary Biocentre, The University of Manchester, Manchester M1 7DN, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Cyclic nucleotide-binding protein
A, B
250Desulfitobacterium hafniense (strain DCB-2 / DSM 10664)Mutation(s): 1 
Find proteins for B8FW11 (Desulfitobacterium hafniense (strain DCB-2 / DSM 10664))
Go to UniProtKB:  B8FW11
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3C4
Query on 3C4

Download SDF File 
Download CCD File 
A, B
(3-CHLORO-4-HYDROXYPHENYL)ACETIC ACID
C8 H7 Cl O3
IYTUKSIOQKTZEG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.01 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.189 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 42.500α = 90.00
b = 86.510β = 90.00
c = 125.230γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2008-08-15 
  • Released Date: 2008-09-30 
  • Deposition Author(s): Levy, C.

Revision History 

  • Version 1.0: 2008-09-30
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance