6ZVQ

Complex between SMAD2 MH2 domain and peptide from Ski corepressor


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.167 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Mutations in SKI in Shprintzen-Goldberg syndrome lead to attenuated TGF-beta responses through SKI stabilization.

Gori, I.George, R.Purkiss, A.G.Strohbuecker, S.Randall, R.A.Ogrodowicz, R.Carmignac, V.Faivre, L.Joshi, D.Kjaer, S.Hill, C.S.

(2021) Elife 10

  • DOI: 10.7554/eLife.63545
  • Primary Citation of Related Structures:  
    6ZVQ

  • PubMed Abstract: 
  • Shprintzen-Goldberg syndrome (SGS) is a multisystemic connective tissue disorder, with considerable clinical overlap with Marfan and Loeys-Dietz syndromes. These syndromes have commonly been associated with enhanced TGF-β signaling. In SGS patients, heterozygous point mutations have been mapped to the transcriptional co-repressor SKI, which is a negative regulator of TGF-β signaling that is rapidly degraded upon ligand stimulation ...

    Shprintzen-Goldberg syndrome (SGS) is a multisystemic connective tissue disorder, with considerable clinical overlap with Marfan and Loeys-Dietz syndromes. These syndromes have commonly been associated with enhanced TGF-β signaling. In SGS patients, heterozygous point mutations have been mapped to the transcriptional co-repressor SKI, which is a negative regulator of TGF-β signaling that is rapidly degraded upon ligand stimulation. The molecular consequences of these mutations, however, are not understood. Here we use a combination of structural biology, genome editing, and biochemistry to show that SGS mutations in SKI abolish its binding to phosphorylated SMAD2 and SMAD3. This results in stabilization of SKI and consequently attenuation of TGF-β responses, both in knockin cells expressing an SGS mutation and in fibroblasts from SGS patients. Thus, we reveal that SGS is associated with an attenuation of TGF-β-induced transcriptional responses, and not enhancement, which has important implications for other Marfan-related syndromes.


    Organizational Affiliation

    Developmental Signalling Laboratory, The Francis Crick Institute, London, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Mothers against decapentaplegic homolog 2A227Homo sapiensMutation(s): 0 
Gene Names: SMAD2MADH2MADR2
UniProt & NIH Common Fund Data Resources
Find proteins for Q15796 (Homo sapiens)
Explore Q15796 
Go to UniProtKB:  Q15796
PHAROS:  Q15796
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ski oncogeneB35Homo sapiensMutation(s): 0 
Gene Names: SKI
UniProt & NIH Common Fund Data Resources
Find proteins for P12755 (Homo sapiens)
Explore P12755 
Go to UniProtKB:  P12755
PHAROS:  P12755
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
AL-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.164 
  • R-Value Observed: 0.167 
  • Space Group: I 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 113.82α = 90
b = 113.82β = 90
c = 113.82γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
PHENIXrefinement
xia2data reduction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-06-09
    Type: Initial release