5OEN

Crystal Structure of STAT2 in complex with IRF9


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.92 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.260 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.2 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: https://doi.org/10.1073/pnas.1718426115
  • Primary Citation of Related Structures:  
    5OEM, 5OEN

  • 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 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Interferon regulatory factor 9171Mus musculusMutation(s): 2 
Gene Names: Irf9Isgf3g
UniProt
Find proteins for Q61179 (Mus musculus)
Explore Q61179 
Go to UniProtKB:  Q61179
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ61179
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Signal transducer and activator of transcription175Mus musculusMutation(s): 2 
Gene Names: Stat2
UniProt
Find proteins for Q3UDU1 (Mus musculus)
Explore Q3UDU1 
Go to UniProtKB:  Q3UDU1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ3UDU1
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.92 Å
  • R-Value Free: 0.307 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.260 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 30.602α = 90
b = 124.037β = 92.1
c = 51.029γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-01-24
    Type: Initial release
  • Version 1.1: 2018-01-31
    Changes: Database references
  • Version 1.2: 2024-01-17
    Changes: Data collection, Database references, Refinement description