1DSB

CRYSTAL STRUCTURE OF THE DSBA PROTEIN REQUIRED FOR DISULPHIDE BOND FORMATION IN VIVO


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.169 
  • R-Value Observed: 0.169 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal structure of the DsbA protein required for disulphide bond formation in vivo.

Martin, J.L.Bardwell, J.C.Kuriyan, J.

(1993) Nature 365: 464-468

  • DOI: 10.1038/365464a0
  • Primary Citation of Related Structures:  
    1DSB

  • PubMed Abstract: 
  • Proteins that contain disulphide bonds are often slow to fold in vitro because the oxidation and correct pairing of the cysteine residues is rate limiting. The folding of such proteins is greatly accelerated in Escherichia coli by DsbA, but the mecha ...

    Proteins that contain disulphide bonds are often slow to fold in vitro because the oxidation and correct pairing of the cysteine residues is rate limiting. The folding of such proteins is greatly accelerated in Escherichia coli by DsbA, but the mechanism of this rate enhancement is not well understood. Here we report the crystal structure of oxidized DsbA and show that it resembles closely the ubiquitous redox protein thioredoxin, despite very low sequence similarity. An important difference, however, is the presence of another domain which forms a cap over the thioredoxin-like active site of DsbA. The redox-active disulphide bond, which is responsible for the oxidation of substrates, is thus at a domain interface and is surrounded by grooves and exposed hydrophobic side chains. These features suggest that DsbA might act by binding to partially folded polypeptide chains before oxidation of cysteine residues.


    Related Citations: 
    • Crystallization of Dsba, an Escherichia Coli Protein Required for Disulphide Bond Formation in Vivo
      Martin, J.L., Waksman, G., Bardwell, J.C.A., Beckwith, J., Kuriyan, J.
      (1993) J Mol Biol 230: 1097

    Organizational Affiliation

    Rockefeller University, New York, New York.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DSBAAB189Escherichia coliMutation(s): 0 
Find proteins for P0AEG4 (Escherichia coli (strain K12))
Explore P0AEG4 
Go to UniProtKB:  P0AEG4
Protein Feature View
Expand
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.169 
  • R-Value Observed: 0.169 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 117.5α = 90
b = 65β = 126.3
c = 76.5γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance