5NWX

Insight into the molecular recognition mechanism of the coactivator NCoA1 by STAT6


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.51 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Insight into the molecular recognition mechanism of the coactivator NCoA1 by STAT6.

Russo, L.Giller, K.Pfitzner, E.Griesinger, C.Becker, S.

(2017) Sci Rep 7: 16845-16845

  • DOI: https://doi.org/10.1038/s41598-017-17088-5
  • Primary Citation of Related Structures:  
    5NWM, 5NWX

  • PubMed Abstract: 

    Crucial for immune and anti-inflammatory cellular responses, signal transducer and activator of transcription 6 (STAT6) regulates transcriptional activation in response to interleukin-4 and -13 -induced tyrosine phosphorylation by direct interaction with coactivators. The interaction of STAT6 with nuclear coactivator 1 (NCoA1) is mediated by a short region of the STAT6 transactivation domain that includes the motif LXXLL and interacts with the PAS-B domain of NCoA1. Despite the availability of an X-ray structure of the PAS-B domain/ Leu 794 -Gly 814 -STAT6 complex, the mechanistic details of this interaction are still poorly understood. Here, we determine the structure of the NCoA1 257-385 /STAT6 783-814 complex using Nuclear Magnetic Resonance (NMR) and X-ray crystallography. The STAT6 783-814 peptide binds with additional N-terminal amino acids to NCoA1 257-385 , compared to the STAT6 794-814 peptide, explaining its higher affinity. Secondary and tertiary structures existing in the free peptide are more highly populated in the complex, suggesting binding by conformational selection.


  • Organizational Affiliation

    Department for NMR based Structural Biology, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077, Göttingen, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nuclear receptor coactivator 1132Mus musculusMutation(s): 0 
Gene Names: Ncoa1Src1
EC: 2.3.1.48
UniProt & NIH Common Fund Data Resources
Find proteins for P70365 (Mus musculus)
Explore P70365 
Go to UniProtKB:  P70365
IMPC:  MGI:1276523
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP70365
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 transcription 632Homo sapiensMutation(s): 0 
Gene Names: STAT6
UniProt & NIH Common Fund Data Resources
Find proteins for P42226 (Homo sapiens)
Explore P42226 
Go to UniProtKB:  P42226
PHAROS:  P42226
GTEx:  ENSG00000166888 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42226
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.51 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.184 
  • R-Value Observed: 0.186 
  • Space Group: P 62
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 61.631α = 90
b = 61.631β = 90
c = 73.283γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SADABSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-12-13
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Data collection, Database references, Refinement description