5C4V

Ski-like protein

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

SnoN Stabilizes the SMAD3/SMAD4 Protein Complex.

Wallden, K., Nyman, T., Hallberg, B.M.

(2017) Sci Rep 7: 46370-46370

  • DOI: 10.1038/srep46370
  • Structures With Same Primary Citation

  • PubMed Abstract: 

    • TGF-β signaling regulates cellular processes such as proliferation, differentiation and apoptosis through activation of SMAD transcription factors that are in turn modulated by members of the Ski-SnoN family. In this process, Ski has been shown to ne ...

    TGF-β signaling regulates cellular processes such as proliferation, differentiation and apoptosis through activation of SMAD transcription factors that are in turn modulated by members of the Ski-SnoN family. In this process, Ski has been shown to negatively modulate TGF-β signaling by disrupting active R-SMAD/Co-SMAD heteromers. Here, we show that the related regulator SnoN forms a stable complex with the R-SMAD (SMAD3) and the Co-SMAD (SMAD4). To rationalize this stabilization at the molecular level, we determined the crystal structure of a complex between the SAND domain of SnoN and the MH2-domain of SMAD4. This structure shows a binding mode that is compatible with simultaneous coordination of R-SMADs. Our results show that SnoN, and SMAD heteromers can form a joint structural core for the binding of other transcription modulators. The results are of fundamental importance for our understanding of the molecular mechanisms behind the modulation of TGF-β signaling.

    Organizational Affiliation: 

    European Molecular Biology Laboratory, Hamburg Unit, 22603 Hamburg, Germany.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mothers against decapentaplegic homolog 4A, C, E258Homo sapiensMutation(s): 0 
Gene Names: SMAD4, DPC4, MADH4
Find proteins for Q13485 (Homo sapiens)
Explore Q13485 
Go to UniProtKB:  Q13485
NIH Common Fund Data Resources
PHAROS  Q13485
GTEx  ENSG00000141646
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ski-like proteinB, D, F127Homo sapiensMutation(s): 0 
Gene Names: SKIL, SNO
Find proteins for P12757 (Homo sapiens)
Explore P12757 
Go to UniProtKB:  P12757
NIH Common Fund Data Resources
PHAROS  P12757
GTEx  ENSG00000136603
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL
Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
ZN
Query on ZN
Download CCD File 
B, D, F
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
NI
Query on NI
Download CCD File 
B
NICKEL (II) ION
Ni
VEQPNABPJHWNSG-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.209 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 213.54α = 90
b = 122.83β = 90.72
c = 51.57γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Swedish Research CouncilSweden--

Revision History 

  • Version 1.0: 2016-10-12
    Type: Initial release
  • Version 1.1: 2017-04-19
    Changes: Database references