5OEM

Crystal Structure of Interferon Regulatory Factor 9 IAD Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural basis of STAT2 recognition by IRF9 reveals molecular insights into ISGF3 function.

Rengachari, S.Groiss, S.Devos, J.M.Caron, E.Grandvaux, N.Panne, D.

(2018) Proc. Natl. Acad. Sci. U.S.A. 115: E601-E609

  • DOI: 10.1073/pnas.1718426115
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cytokine signaling through the JAK/STAT pathway controls multiple cellular responses including growth, survival, differentiation, and pathogen resistance. An expansion in the gene regulatory repertoire controlled by JAK/STAT signaling occurs through ...

    Cytokine signaling through the JAK/STAT pathway controls multiple cellular responses including growth, survival, differentiation, and pathogen resistance. An expansion in the gene regulatory repertoire controlled by JAK/STAT signaling occurs through the interaction of STATs with IRF transcription factors to form ISGF3, a complex that contains STAT1, STAT2, and IRF9 and regulates expression of IFN-stimulated genes. ISGF3 function depends on selective interaction between IRF9, through its IRF-association domain (IAD), with the coiled-coil domain (CCD) of STAT2. Here, we report the crystal structures of the IRF9-IAD alone and in a complex with STAT2-CCD. Despite similarity in the overall structure among respective paralogs, the surface features of the IRF9-IAD and STAT2-CCD have diverged to enable specific interaction between these family members. We derive a model for the ISGF3 complex bound to an ISRE DNA element and demonstrate that the observed interface between STAT2 and IRF9 is required for ISGF3 function in cells.


    Organizational Affiliation

    European Molecular Biology Laboratory, 38042 Grenoble, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Interferon regulatory factor 9
A
189Mus musculusMutation(s): 0 
Gene Names: Irf9 (Isgf3g)
Find proteins for Q61179 (Mus musculus)
Go to UniProtKB:  Q61179
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.207 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 76.770α = 90.00
b = 76.770β = 90.00
c = 85.605γ = 120.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
PHASERphasing
XDSdata reduction
XSCALEdata scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-01-24
    Type: Initial release
  • Version 1.1: 2018-01-31
    Type: Database references