1YVL

Structure of Unphosphorylated STAT1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.240 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural bases of unphosphorylated STAT1 association and receptor binding.

Mao, X.Ren, Z.Parker, G.N.Sondermann, H.Pastorello, M.A.Wang, W.McMurray, J.S.Demeler, B.Darnell, J.E.Chen, X.

(2005) Mol.Cell 17: 761-771

  • DOI: 10.1016/j.molcel.2005.02.021

  • PubMed Abstract: 
  • The crystal structure has been determined at 3.0 A resolution for an unphosphorylated STAT1 (1-683) complexed with a phosphopeptide derived from the alpha chain of interferon gamma (IFNgamma) receptor. Two dimer interfaces are seen, one between the N ...

    The crystal structure has been determined at 3.0 A resolution for an unphosphorylated STAT1 (1-683) complexed with a phosphopeptide derived from the alpha chain of interferon gamma (IFNgamma) receptor. Two dimer interfaces are seen, one between the N domains (NDs) (amino acid residues 1-123) and the other between the core fragments (CFs) (residues 132-683). Analyses of the wild-type (wt) and mutant STAT1 proteins by static light scattering, analytical ultracentrifugation, and coimmunoprecipitation suggest that STAT1 is predominantly dimeric prior to activation, and the dimer is mediated by the ND interactions. The connecting region between the ND and the CF is flexible and allows two interconvertable orientations of the CFs, termed "antiparallel" or "parallel," as determined by SH2 domain orientations. Functional implications of these dimer conformations are discussed. Also revealed in this structure is the detailed interaction between STAT1 SH2 domain and its docking site on IFNgamma receptor.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, M.D. Anderson Cancer Center , The University of Texas, Houston, Texas 77030, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Signal transducer and activator of transcription 1-alpha/beta
A, B
683Homo sapiensMutation(s): 0 
Gene Names: STAT1
Find proteins for P42224 (Homo sapiens)
Go to Gene View: STAT1
Go to UniProtKB:  P42224
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
5-residue peptide
C, D
5N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
AU
Query on AU

Download SDF File 
Download CCD File 
A, B
GOLD ION
Au
ZBKIUFWVEIBQRT-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PTR
Query on PTR
C, D
L-PEPTIDE LINKINGC9 H12 N O6 PTYR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.240 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 102.553α = 90.00
b = 102.553β = 90.00
c = 646.481γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-2000data collection
SOLVEphasing
CNSrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-03-22
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance