7CEI

THE ENDONUCLEASE DOMAIN OF COLICIN E7 IN COMPLEX WITH ITS INHIBITOR IM7 PROTEIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of the DNase domain of colicin E7 in complex with its inhibitor Im7 protein.

Ko, T.P.Liao, C.C.Ku, W.Y.Chak, K.F.Yuan, H.S.

(1999) Structure Fold.Des. 7: 91-102


  • PubMed Abstract: 
  • Colicin E7 (ColE7) is one of the bacterial toxins classified as a DNase-type E-group colicin. The cytotoxic activity of a colicin in a colicin-producing cell can be counteracted by binding of the colicin to a highly specific immunity protein. This bi ...

    Colicin E7 (ColE7) is one of the bacterial toxins classified as a DNase-type E-group colicin. The cytotoxic activity of a colicin in a colicin-producing cell can be counteracted by binding of the colicin to a highly specific immunity protein. This biological event is a good model system for the investigation of protein recognition.


    Related Citations: 
    • The Crystal Structure of the Immunity Protein of Colicin E7 Suggests a Possible Colicin-Interacting Surface.
      Chak, K.-F.,Safo, M.K.,Ku, W.-Y.,Hsieh, S.-Y.,Yuan, H.S.
      (1996) Proc.Natl.Acad.Sci.USA 93: 6437


    Organizational Affiliation

    Institute of Molecular Biology, Academia Sinica, Taipei, Taiwan 11529, Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (COLICIN E7 IMMUNITY PROTEIN)
A
87Escherichia coliMutation(s): 0 
Gene Names: imm (ceiE7)
Find proteins for Q03708 (Escherichia coli)
Go to UniProtKB:  Q03708
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (COLICIN E7 IMMUNITY PROTEIN)
B
206Escherichia coliMutation(s): 0 
Gene Names: colE7 (cea)
EC: 3.1.-.-
Find proteins for Q47112 (Escherichia coli)
Go to UniProtKB:  Q47112
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.203 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 65.440α = 90.00
b = 76.020β = 90.00
c = 119.990γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORphasing
X-PLORrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-09-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance