1ST9

Crystal Structure of a Soluble Domain of ResA in the Oxidised Form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Work: 0.123 
  • R-Value Observed: 0.123 

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This is version 1.2 of the entry. See complete history


Literature

Structural Basis of Redox-coupled Protein Substrate Selection by the Cytochrome c Biosynthesis Protein ResA.

Crow, A.Acheson, R.M.Le Brun, N.E.Oubrie, A.

(2004) J Biol Chem 279: 23654-23660

  • DOI: https://doi.org/10.1074/jbc.M402823200
  • Primary Citation of Related Structures:  
    1ST9, 1SU9

  • PubMed Abstract: 

    Post-translational maturation of cytochromes c involves the covalent attachment of heme to the Cys-Xxx-Xxx-Cys-His motif of the apo-cytochrome. For this process, the two cysteines of the motif must be in the reduced state. In bacteria, this is achieved by dedicated, membrane-bound thiol-disulfide oxidoreductases with a high reducing power, which are essential components of cytochrome c maturation systems and are also linked to cellular disulfide-bond formation machineries. Here we report high-resolution structures of oxidized and reduced states of a soluble, functional domain of one such oxidoreductase, ResA, from Bacillus subtilis. The structures elucidate the structural basis of the protein's high reducing power and reveal the largest redox-coupled conformational changes observed to date in any thioredoxin-like protein. These redox-coupled changes alter the protein surface and illustrate how the redox state of ResA predetermines to which substrate it binds. Furthermore, a polar cavity, present only in the reduced state, may confer specificity to recognize apo-cytochrome c. The described features of ResA are likely to be general for bacterial cytochrome c maturation systems.


  • Organizational Affiliation

    School of Biological Sciences, University of East Anglia, Norwich NR4 7TJ, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Thiol-disulfide oxidoreductase resA
A, B
143Bacillus subtilisMutation(s): 0 
Gene Names: RESABSU23150
UniProt
Find proteins for P35160 (Bacillus subtilis (strain 168))
Explore P35160 
Go to UniProtKB:  P35160
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP35160
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Work: 0.123 
  • R-Value Observed: 0.123 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.008α = 90
b = 61.008β = 90
c = 165.424γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2004-05-11
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance