1JZD

DsbC-DsbDalpha complex


Experimental Data Snapshot

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

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

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

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

  • 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 ...

    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.


    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
MoleculeChainsSequence LengthOrganismDetails
thiol:disulfide interchange protein dsbc
A, B
220Escherichia coli (strain K12)Gene Names: dsbC (xprA)
Find proteins for P0AEG6 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AEG6
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
thiol:disulfide interchange protein dsbd
C
132Escherichia coli (strain K12)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 = 68.910α = 90.00
b = 68.910β = 90.00
c = 230.336γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
CCP4data scaling
MOSFLMdata reduction
MOLREPphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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