1UB4

crystal structure of MazEF complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the MazE/MazF Complex. Molecular Bases of Antidote-Toxin Recognition

Kamada, K.Hanaoka, F.Burley, S.K.

(2003) Mol.Cell 11: 875-884


  • PubMed Abstract: 
  • A structure of the Escherichia coli chromosomal MazE/MazF addiction module has been determined at 1.7 A resolution. Addiction modules consist of stable toxin and unstable antidote proteins that govern bacterial cell death. MazE (antidote) and MazF (t ...

    A structure of the Escherichia coli chromosomal MazE/MazF addiction module has been determined at 1.7 A resolution. Addiction modules consist of stable toxin and unstable antidote proteins that govern bacterial cell death. MazE (antidote) and MazF (toxin) form a linear heterohexamer composed of alternating toxin and antidote homodimers (MazF(2)-MazE(2)-MazF(2)). The MazE homodimer contains a beta barrel from which two extended C termini project, making interactions with flanking MazF homodimers that resemble the plasmid-encoded toxins CcdB and Kid. The MazE/MazF heterohexamer structure documents that the mechanism of antidote-toxin recognition is common to both chromosomal and plasmid-borne addiction modules, and provides general molecular insights into toxin function, antidote degradation in the absence of toxin, and promoter DNA binding by antidote/toxin complexes.


    Organizational Affiliation

    Laboratories of Molecular Biophysics, The Rockefeller University, 1230 York Avenue, New York, New York 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
MazF protein
A, B
110Escherichia coli (strain K12)Gene Names: mazF (chpA, chpAK)
EC: 3.1.27.-
Find proteins for P0AE70 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AE70
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
MazE protein
C
85Escherichia coli (strain K12)Gene Names: mazE (chpAI, chpR)
Find proteins for P0AE72 (Escherichia coli (strain K12))
Go to UniProtKB:  P0AE72
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.210 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 74.591α = 90.00
b = 116.717β = 90.00
c = 76.841γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
MLPHAREphasing
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-05-20
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance