7CEI

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.203 
  • R-Value Observed: 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 7: 91-102

  • DOI: 10.1016/s0969-2126(99)80012-4
  • Primary Citation of Related Structures:  
    7CEI

  • 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 biological event is a good model system for the investigation of protein recognition ...

    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 U S A 93: 6437

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (COLICIN E7 IMMUNITY PROTEIN) A87Escherichia coli str. K-12 substr. W3110Mutation(s): 0 
Gene Names: ceiE7
Find proteins for Q03708 (Escherichia coli)
Explore Q03708 
Go to UniProtKB:  Q03708
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
PROTEIN (COLICIN E7 IMMUNITY PROTEIN) B206Escherichia coli str. K-12 substr. W3110Mutation(s): 0 
EC: 3.1
Find proteins for Q47112 (Escherichia coli)
Explore Q47112 
Go to UniProtKB:  Q47112
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 
B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.203 
  • R-Value Observed: 0.203 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.44α = 90
b = 76.02β = 90
c = 119.99γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

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