1UJZ

Crystal structure of the E7_C/Im7_C complex; a computationally designed interface between the colicin E7 DNase and the Im7 Immunity protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.242 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Computational redesign of protein-protein interaction specificity

Kortemme, T.Joachimiak, L.A.Bullock, A.N.Schuler, A.D.Stoddard, B.L.Baker, D.

(2004) Nat.Struct.Mol.Biol. 11: 371-379

  • DOI: 10.1038/nsmb749

  • PubMed Abstract: 
  • We developed a 'computational second-site suppressor' strategy to redesign specificity at a protein-protein interface and applied it to create new specifically interacting DNase-inhibitor protein pairs. We demonstrate that the designed switch in spec ...

    We developed a 'computational second-site suppressor' strategy to redesign specificity at a protein-protein interface and applied it to create new specifically interacting DNase-inhibitor protein pairs. We demonstrate that the designed switch in specificity holds in in vitro binding and functional assays. We also show that the designed interfaces are specific in the natural functional context in living cells, and present the first high-resolution X-ray crystallographic analysis of a computer-redesigned functional protein-protein interface with altered specificity. The approach should be applicable to the design of interacting protein pairs with novel specificities for delineating and re-engineering protein interaction networks in living cells.


    Organizational Affiliation

    Howard Hughes Medical Institute & Department of Biochemistry, Box 357350, University of Washington, Seattle, Washington 98195-7350, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Designed Colicin E7 immunity protein
A
87Escherichia coliMutation(s): 1 
Gene Names: imm (ceiE7)
Find proteins for Q03708 (Escherichia coli)
Go to UniProtKB:  Q03708
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Designed Colicin E7 DNase
B
128Escherichia coliMutation(s): 3 
Gene Names: colE7 (cea)
EC: 3.1.-.-
Find proteins for Q47112 (Escherichia coli)
Go to UniProtKB:  Q47112
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.242 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 62.882α = 90.00
b = 74.552β = 90.00
c = 120.444γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-2000data reduction
EPMRphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-04-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance