2XSC

Crystal structure of the cell-binding B oligomer of verotoxin-1 from E. coli


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.142 
  • R-Value Observed: 0.145 

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This is version 1.2 of the entry. See complete history


Literature

Crystal Structure of the Cell-Binding B Oligomer of Verotoxin-1 from E. Coli.

Stein, P.E.Boodhoo, A.Tyrrell, G.J.Brunton, J.L.Read, R.J.

(1992) Nature 355: 748

  • DOI: 10.1038/355748a0
  • Primary Citation of Related Structures:  
    2XSC

  • PubMed Abstract: 
  • The Shiga toxin family, a group of cytotoxins associated with diarrhoeal diseases and the haemolytic uraemic syndrome, includes Shiga toxin from Shigella dysenteriae type 1 and verotoxins produced by enteropathogenic Escherichia coli. The family belongs to the A-B class of bacterial toxins, which includes the cholera toxin family, pertussis and diphtheria toxins ...

    The Shiga toxin family, a group of cytotoxins associated with diarrhoeal diseases and the haemolytic uraemic syndrome, includes Shiga toxin from Shigella dysenteriae type 1 and verotoxins produced by enteropathogenic Escherichia coli. The family belongs to the A-B class of bacterial toxins, which includes the cholera toxin family, pertussis and diphtheria toxins. These toxins all have bipartite structures consisting of an enzymatic A subunit associated with a B oligomer which binds to specific cell-surface receptors, but their amino-acid sequences and pathogenic mechanisms differ. We have determined the crystal structure of the B oligomer of verotoxin-1 from E. coli. The structure unexpectedly resembles that of the B oligomer of the cholera toxin-like heat-labile enterotoxin from E. coli, despite the absence of detectable sequence similarity between these two proteins. This result implies a distant evolutionary relationship between the Shiga toxin and cholera toxin families. We suggest that the cell surface receptor-binding site lies in a cleft between adjacent subunits of the B pentamer, providing a potential target for drugs and vaccines to prevent toxin binding and effect.


    Organizational Affiliation

    Department of Medical Microbiology and Infectious Diseases, University of Alberta, Edmonton, Canada.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SHIGA-LIKE TOXIN 1 SUBUNIT BA, B, C, D, E69Escherichia coliMutation(s): 0 
Find proteins for P69179 (Enterobacteria phage H19B)
Explore P69179 
Go to UniProtKB:  P69179
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download Ideal Coordinates CCD File 
F [auth B], G [auth C], H [auth E]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.142 
  • R-Value Observed: 0.145 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 59.6α = 90
b = 102.4β = 90
c = 56.1γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
MLPHAREphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-10-13
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance