Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | Electron Density | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 32.13 kDa 
• Atom Count: 2649 
• Residue Count: 272 
• Unique protein chains: 1

1ST9

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

• DOI: 10.2210/pdb1ST9/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Bacillus subtilis
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2004-03-25 Released: 2004-05-11 
• Deposition Author(s): Crow, A., Acheson, R.M., Le Brun, N.E., Oubrie, A.

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Experimental Data Snapshot

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

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

• PubMed: 15047692 
• DOI: 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.

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Organizational Affiliation: 

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

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Thiol-disulfide oxidoreductase resA	A, B	143	Bacillus subtilis	Mutation(s): 0  Gene Names: resA, BSU23150
Find proteins for P35160 (Bacillus subtilis (strain 168)) Explore P35160  Go to UniProtKB:  P35160

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	A, B	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

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 = 61.008	α = 90
b = 61.008	β = 90
c = 165.424	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-03-25 
• Released Date: 2004-05-11 
Deposition Author(s): Crow, A., Acheson, R.M., Le Brun, N.E., Oubrie, A.

Revision History 

• 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