1PFO

PERFRINGOLYSIN O


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.211 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a cholesterol-binding, thiol-activated cytolysin and a model of its membrane form.

Rossjohn, J.Feil, S.C.McKinstry, W.J.Tweten, R.K.Parker, M.W.

(1997) Cell 89: 685-692

  • Also Cited By: 2BK2, 2BK1

  • PubMed Abstract: 
  • The mechanisms by which proteins gain entry into membranes is a fundamental problem in biology. Here, we present the first crystal structure of a thiol-activated cytolysin, perfringolysin O, a member of a large family of toxins that kill eukaryotic c ...

    The mechanisms by which proteins gain entry into membranes is a fundamental problem in biology. Here, we present the first crystal structure of a thiol-activated cytolysin, perfringolysin O, a member of a large family of toxins that kill eukaryotic cells by punching holes in their membranes. The molecule adopts an unusually elongated shape rich in beta sheet. We have used electron microscopy data to construct a detailed model of the membrane channel form of the toxin. The structures reveal a novel mechanism for membrane insertion. Surprisingly, the toxin receptor, cholesterol, appears to play multiple roles: targeting, promotion of oligomerization, triggering a membrane insertion competent form, and stabilizing the membrane pore.


    Organizational Affiliation

    The Ian Potter Foundation Protein Crystallography Laboratory, St. Vincent's Institute of Medical Research, Fitzroy, Victoria, Australia.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PERFRINGOLYSIN O
A
500Clostridium perfringens (strain 13 / Type A)Mutation(s): 0 
Gene Names: pfo (pfoA, pfoR)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: BETA-BARREL
Sub Group: 
Adventitious Membrane Proteins: Beta-sheet Pore-forming Toxins/Attack Complexes
Protein: 
Perfringolysin O (PFO) protomer
Find proteins for P0C2E9 (Clostridium perfringens (strain 13 / Type A))
Go to UniProtKB:  P0C2E9
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.211 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 46.987α = 90.00
b = 178.292β = 90.00
c = 174.207γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-08-05
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance