2O6G

Crystal structure of IRF-3 bound to the interferon-b enhancer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

An Atomic Model of the Interferon-beta Enhanceosome.

Panne, D.Maniatis, T.Harrison, S.C.

(2007) Cell 129: 1111-1123

  • DOI: 10.1016/j.cell.2007.05.019
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Transcriptional activation of the interferon-beta (IFN-beta) gene requires assembly of an enhanceosome containing ATF-2/c-Jun, IRF-3/IRF-7, and NFkappaB. These factors bind cooperatively to the IFN-beta enhancer and recruit coactivators and chromatin ...

    Transcriptional activation of the interferon-beta (IFN-beta) gene requires assembly of an enhanceosome containing ATF-2/c-Jun, IRF-3/IRF-7, and NFkappaB. These factors bind cooperatively to the IFN-beta enhancer and recruit coactivators and chromatin-remodeling proteins to the IFN-beta promoter. We describe here a crystal structure of the DNA-binding domains of IRF-3, IRF-7, and NFkappaB, bound to one half of the enhancer, and use a previously described structure of the remaining half to assemble a complete picture of enhanceosome architecture in the vicinity of the DNA. Association of eight proteins with the enhancer creates a continuous surface for recognizing a composite DNA-binding element. Paucity of local protein-protein contacts suggests that cooperative occupancy of the enhancer comes from both binding-induced changes in DNA conformation and interactions with additional components such as CBP. Contacts with virtually every nucleotide pair account for the evolutionary invariance of the enhancer sequence.


    Organizational Affiliation

    The Jack and Eileen Connors Structural Biology Laboratory, Harvard Medical School, Department of Biological Chemistry and Molecular Pharmacology, Howard Hughes Medical Institute, 250 Longwood Avenue, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Interferon regulatory factor 3
E, F, G, H
123Homo sapiensMutation(s): 0 
Gene Names: IRF3
Find proteins for Q14653 (Homo sapiens)
Go to Gene View: IRF3
Go to UniProtKB:  Q14653
Entity ID: 1
MoleculeChainsLengthOrganism
interferon-b enhancerD57N/A
Entity ID: 2
MoleculeChainsLengthOrganism
interferon-b enhancerC57N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.251 
  • Space Group: I 2 2 2
Unit Cell:
Length (Å)Angle (°)
a = 91.020α = 90.00
b = 105.320β = 90.00
c = 353.160γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
MOLREPphasing
SCALEPACKdata scaling
ADSCdata collection
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2006-12-07 
  • Released Date: 2007-07-24 
  • Deposition Author(s): Panne, D.

Revision History 

  • Version 1.0: 2007-07-24
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-18
    Type: Refinement description