Biological Assembly 1  

 3D View: Structure | Electron Density

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 62377.09 
• Atom Count: 4223 
• Residue Count: 572 
• Unique protein chains: 2

1JZD

DsbC-DsbDalpha complex

• DOI: 10.2210/pdb1JZD/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Escherichia coli (strain K12)
• Expression System: Escherichia coli, Escherichia coli BL21(DE3)
• Mutation(s): 2 


• Deposited: 2001-09-15 Released: 2003-03-08 
• Deposition Author(s): Haebel, P.W., Goldstone, D., Katzen, F., Beckwith, J., Metcalf, P.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.293 
• R-Value Work: 0.234 

Literature

The Disulfide Bond Isomerase DsbC is Activated by an Immunoglobulin-fold Thiol Oxidoreductase: Crystal structure of the DsbC-DsbDalpha complex.

Haebel, P.W., Goldstone, D., Katzen, F., Beckwith, J., Metcalf, P.

(2002) Embo J. 21: 4774-4784

• PubMed: 12234918 
• Primary Citation of Related Structures:  
  1JZO, 1JPE


• PubMed Abstract: 
  

The Escherichia coli disulfide bond isomerase DsbC rearranges incorrect disulfide bonds during oxidative protein folding. It is specifically activated by the periplasmic N-terminal domain (DsbDalpha) of the transmembrane electron transporter DsbD. An intermediate of the electron transport reaction was trapped, yielding a covalent DsbC-DsbDalpha complex. The 2.3 A crystal structure of the complex shows for the first time the specific interactions between two thiol oxidoreductases. DsbDalpha is a novel thiol oxidoreductase with the active site cysteines embedded in an immunoglobulin fold. It binds into the central cleft of the V-shaped DsbC dimer, which assumes a closed conformation on complex formation. Comparison of the complex with oxidized DsbDalpha reveals major conformational changes in a cap structure that regulates the accessibility of the DsbDalpha active site. Our results explain how DsbC is selectively activated by DsbD using electrons derived from the cytoplasm.

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Organizational Affiliation: 

School of Biological Sciences, University of Auckland, Private Bag 92019, Auckland, New Zealandand.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
thiol:disulfide interchange protein dsbc	A, B	220	Escherichia coli (strain K12)	Mutation(s): 1  Gene Names: dsbC (xprA)
Find proteins for P0AEG6 (Escherichia coli (strain K12)) Go to UniProtKB:  P0AEG6

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
thiol:disulfide interchange protein dsbd	C	132	Escherichia coli (strain K12)	Mutation(s): 1  Gene Names: dsbD (cutA2, cycZ, dipZ) EC: 1.8.1.8
Find proteins for P36655 (Escherichia coli (strain K12)) Go to UniProtKB:  P36655

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.3 Å
• R-Value Free: 0.293 
• R-Value Work: 0.234 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 68.910	α = 90.00
b = 68.910	β = 90.00
c = 230.336	γ = 90.00

Software Package:

Software Name	Purpose
CNS	refinement
CCP4	data scaling
MOSFLM	data reduction
MOLREP	phasing
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2001-09-15 
• Released Date: 2003-03-08 
• Deposition Author(s): Haebel, P.W., Goldstone, D., Katzen, F., Beckwith, J., Metcalf, P.

Revision History 

• Version 1.0: 2003-03-08
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance