1PRT

THE CRYSTAL STRUCTURE OF PERTUSSIS TOXIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

The crystal structure of pertussis toxin.

Stein, P.E.Boodhoo, A.Armstrong, G.D.Cockle, S.A.Klein, M.H.Read, R.J.

(1994) Structure 2: 45-57

  • DOI: https://doi.org/10.1016/s0969-2126(00)00007-1
  • Primary Citation of Related Structures:  
    1PRT

  • PubMed Abstract: 

    Pertussis toxin is an exotoxin of the A-B class produced by Bordetella pertussis. The holotoxin comprises 952 residues forming six subunits (five different sequences, S1-S5). It plays an important role in the development of protective immunity to whooping cough, and is an essential component of new acellular vaccines. It is also widely used as a biochemical tool to ADP-ribosylate GTP-binding proteins in the study of signal transduction. The crystal structure of pertussis toxin has been determined at 2.9 A resolution. The catalytic A-subunit (S1) shares structural homology with other ADP-ribosylating bacterial toxins, although differences in the carboxy-terminal portion explain its unique activation mechanism. Despite its heterogeneous subunit composition, the structure of the cell-binding B-oligomer (S2, S3, two copies of S4, and S5) resembles the symmetrical B-pentamers of the cholera toxin and Shiga toxin families, but it interacts differently with the A-subunit. The structural similarity is all the more surprising given that there is almost no sequence homology between B-subunits of the different toxins. Two peripheral domains that are unique to the pertussis toxin B-oligomer show unexpected structural homology with a calcium-dependent eukaryotic lectin, and reveal possible receptor-binding sites. The structure provides insight into the pathogenic mechanisms of pertussis toxin and the evolution of bacterial toxins. Knowledge of the tertiary structure of the active site forms a rational basis for elimination of catalytic activity in recombinant molecules for vaccine use.


  • Organizational Affiliation

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


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PERTUSSIS TOXIN (SUBUNIT S1)
A, G
234Bordetella pertussisMutation(s): 0 
UniProt
Find proteins for P04977 (Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251))
Go to UniProtKB:  P04977
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
PERTUSSIS TOXIN (SUBUNIT S2)
B, H
196Bordetella pertussisMutation(s): 0 
UniProt
Find proteins for P04978 (Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251))
Go to UniProtKB:  P04978
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
PERTUSSIS TOXIN (SUBUNIT S3)
C, I
196Bordetella pertussisMutation(s): 0 
UniProt
Find proteins for P04979 (Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251))
Go to UniProtKB:  P04979
Sequence Annotations
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  • Reference Sequence
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
PERTUSSIS TOXIN (SUBUNIT S4)
D, E, J, K
110Bordetella pertussisMutation(s): 0 
UniProt
Find proteins for P0A3R5 (Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251))
Go to UniProtKB:  P0A3R5
Sequence Annotations
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  • Reference Sequence
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
PERTUSSIS TOXIN (SUBUNIT S5)
F, L
98Bordetella pertussisMutation(s): 0 
UniProt
Find proteins for P04981 (Bordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251))
Go to UniProtKB:  P04981
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Work: 0.195 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 163.8α = 90
b = 98.2β = 90
c = 194.5γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-01-26
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-06-05
    Changes: Data collection, Database references, Other
  • Version 1.4: 2024-10-23
    Changes: Structure summary