1L6P

N-terminal of DsbD (residues 20-144) from E. coli.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.141 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Thiol-disulfide exchange in an immunoglobulin-like fold: structure of the N-terminal domain of DsbD.

Goulding, C.W.Sawaya, M.R.Parseghian, A.Lim, V.Eisenberg, D.Missiakas, D.

(2002) Biochemistry 41: 6920-6927

  • DOI: 10.1021/bi016038l
  • Primary Citation of Related Structures:  
    1L6P

  • PubMed Abstract: 
  • Escherichia coli DsbD transports electrons across the plasma membrane, a pathway that leads to the reduction of protein disulfide bonds. Three secreted thioredoxin-like factors, DsbC, DsbE, and DsbG, reduce protein disulfide bonds whereby an active site C-X-X-C motif is oxidized to generate a disulfide bond ...

    Escherichia coli DsbD transports electrons across the plasma membrane, a pathway that leads to the reduction of protein disulfide bonds. Three secreted thioredoxin-like factors, DsbC, DsbE, and DsbG, reduce protein disulfide bonds whereby an active site C-X-X-C motif is oxidized to generate a disulfide bond. DsbD catalyzes the reduction of the disulfide of DsbC, DsbE, and DsbG but not of the thioredoxin-like oxidant DsbA. The reduction of DsbC, DsbE, and DsbG occurs by transport of electrons from cytoplasmic thioredoxin to the C-terminal thioredoxin-like domain of DsbD (DsbD(C)). The N-terminal domain of DsbD, DsbD(N), acts as a versatile adaptor in electron transport and is capable of forming disulfides with oxidized DsbC, DsbE, or DsbG as well as with reduced DsbD(C). Isolated DsbD(N) is functional in electron transport in vitro. Crystallized DsbD(N) assumes an immunoglobulin-like fold that encompasses two active site cysteines, C103 and C109, forming a disulfide bond between beta-strands. The disulfide of DsbD(N) is shielded from the environment and capped by a phenylalanine (F70). A model is discussed whereby the immunoglobulin fold of DsbD(N) may provide for the discriminating interaction with thioredoxin-like factors, thereby triggering movement of the phenylalanine cap followed by disulfide rearrangement.


    Organizational Affiliation

    Howard Hughes Medical Institute and Laboratory of Structural Biology and Molecular Medicine, UCLA-DOE, P.O. Box 951570, Los Angeles, California 90095-1570, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Thiol:disulfide interchange protein dsbDA125Escherichia coliMutation(s): 0 
EC: 1.8.1.8
UniProt
Find proteins for P36655 (Escherichia coli (strain K12))
Explore P36655 
Go to UniProtKB:  P36655
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP36655
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Free: 0.226 
  • R-Value Work: 0.139 
  • R-Value Observed: 0.141 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.206α = 90
b = 55.63β = 90
c = 102.052γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SHELXL-97refinement

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-06-12
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance