1J2F

X-ray crystal structure of IRF-3 and its functional implications


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

X-ray crystal structure of IRF-3 and its functional implications.

Takahasi, K.Suzuki, N.N.Horiuchi, M.Mori, M.Suhara, W.Okabe, Y.Fukuhara, Y.Terasawa, H.Akira, S.Fujita, T.Inagaki, F.

(2003) Nat.Struct.Mol.Biol. 10: 922-927

  • DOI: 10.1038/nsb1001

  • PubMed Abstract: 
  • Transcription factor IRF-3 is post-translationally activated by Toll-like receptor (TLR) signaling and has critical roles in the regulation of innate immunity. Here we present the X-ray crystal structure of the C-terminal regulatory domain of IRF-3(1 ...

    Transcription factor IRF-3 is post-translationally activated by Toll-like receptor (TLR) signaling and has critical roles in the regulation of innate immunity. Here we present the X-ray crystal structure of the C-terminal regulatory domain of IRF-3(175-427) (IRF-3 175C) at a resolution of 2.3 A. IRF-3 175C is structurally similar to the Mad homology domain 2 of the Smad family. Structural and functional analyses reveal phosphorylation-induced IRF-3 dimerization, which generates an extensive acidic pocket responsible for binding with p300/CBP. Although TLR and Smad signaling are evolutionarily independent, our results suggest that IRF-3 originates from Smad and acquires its function downstream of TLR.


    Organizational Affiliation

    Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita 12 Nishi 6, Kita-ku, Sapporo 060-0812, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interferon regulatory factor 3
A, B
258Homo sapiensMutation(s): 0 
Gene Names: IRF3
Find proteins for Q14653 (Homo sapiens)
Go to Gene View: IRF3
Go to UniProtKB:  Q14653
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.217 
  • Space Group: P 4 21 2
Unit Cell:
Length (Å)Angle (°)
a = 134.808α = 90.00
b = 134.808β = 90.00
c = 69.340γ = 90.00
Software Package:
Software NamePurpose
CCP4data scaling
MOSFLMdata reduction
SCALAdata scaling
CNSrefinement
CNSphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-11-25
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance