1A87

COLICIN N


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.173 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of a colicin N fragment suggests a model for toxicity.

Vetter, I.R.Parker, M.W.Tucker, A.D.Lakey, J.H.Pattus, F.Tsernoglou, D.

(1998) Structure 6: 863-874


  • PubMed Abstract: 
  • Pore-forming colicins are water-soluble bacteriocins capable of binding to and translocating through the Escherichia coli cell envelope. They then undergo a transition to a transmembrane ion channel in the cytoplasmic membrane leading to bacterial de ...

    Pore-forming colicins are water-soluble bacteriocins capable of binding to and translocating through the Escherichia coli cell envelope. They then undergo a transition to a transmembrane ion channel in the cytoplasmic membrane leading to bacterial death. Colicin N is the smallest pore-forming colicin known to date (40 kDa instead of the more usual 60 kDa) and the crystal structure of its membrane receptor, the porin OmpF, is already known. Structural knowledge of colicin N is therefore important for a molecular understanding of colicin toxicity and is relevant to toxic mechanisms in general.


    Related Citations: 
    • Colicin N Forms Voltage-and Ph-Dependent Channels in Planar Lipid Bilayer Membranes
      Wilmsen, H.U.,Pugsley, A.P.,Pattus, F.
      (1990) Eur.Biophys.J. 18: 149
    • Involvement of Ompf During Reception and Translocation Steps of Colicin N Entry
      Bourdineaud, J.P.,Fierobe, H.P.,Lazdunski, C.,Pages, J.M.
      (1990) Mol.Microbiol. 4: 1737
    • Nucleotide Sequencing of the Structural Gene for Colicin N Reveals Homology between the Catalytic, C-Terminal Domains of Colicins a and N
      Pugsley, A.P.
      (1987) Mol.Microbiol. 1: 317
    • Characterization of the Receptor and Translocator Domains of Colicin N
      El Kouhen, R.,Fierobe, H.P.,Scianimanico, S.,Steiert, M.,Pattus, F.,Pages, J.M.
      (1993) Eur.J.Biochem. 214: 635
    • Insights Into Membrane Insertion Based on Studies of Colicins
      Vetter, I.R.,Parker, M.W.,Pattus, F.,Tsernoglou, D.
      (1996) Protein Toxin Structure --: 5


    Organizational Affiliation

    European Molecular Biology Laboratory, Heidelberg, Germany. ingrid.vetter@mpi-dortmund.mpg.de




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
COLICIN N
A
321Escherichia coliMutation(s): 0 
Gene Names: cna
Find proteins for P08083 (Escherichia coli)
Go to UniProtKB:  P08083
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.310 
  • R-Value Work: 0.173 
  • Space Group: I 41 3 2
Unit Cell:
Length (Å)Angle (°)
a = 187.300α = 90.00
b = 187.300β = 90.00
c = 187.300γ = 90.00
Software Package:
Software NamePurpose
GROPATmodel building
GROPATphasing
TNTrefinement
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-04-06
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance