2DJY

Solution structure of Smurf2 WW3 domain-Smad7 PY peptide complex


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

An Expanded WW Domain Recognition Motif Revealed by the Interaction between Smad7 and the E3 Ubiquitin Ligase Smurf2.

Chong, P.A.Lin, H.Wrana, J.L.Forman-Kay, J.D.

(2006) J Biol Chem 281: 17069-17075

  • DOI: 10.1074/jbc.M601493200
  • Primary Citation of Related Structures:  
    2DJY

  • PubMed Abstract: 
  • Smurf2 is an E3 ubiquitin ligase that drives degradation of the transforming growth factor-beta receptors and other targets. Recognition of the receptors by Smurf2 is accomplished through an intermediary protein, Smad7. Here we have demonstrated that ...

    Smurf2 is an E3 ubiquitin ligase that drives degradation of the transforming growth factor-beta receptors and other targets. Recognition of the receptors by Smurf2 is accomplished through an intermediary protein, Smad7. Here we have demonstrated that the WW3 domain of Smurf2 can directly bind to the Smad7 polyproline-tyrosine (PY) motif. Of particular interest, the highly conserved WW domain binding site Trp, which interacts with target PY motifs, is a Phe in the Smurf2 WW3 domain. To examine this interaction, the solution structure of the complex between the Smad7 PY motif region (ELESPPPPYSRYPMD) and the Smurf2 WW3 domain was determined. The structure reveals that, in addition to binding the PY motif, the WW3 domain binds six residues C-terminal to the PY motif (PY-tail). Although the Phe in the WW3 domain binding site decreases affinity relative to the canonical Trp, this is balanced by additional interactions between the PY-tail and the beta1-strand and beta1-beta2 loop of the WW3 domain. The interaction between the Smurf2 WW3 domain and the Smad7 PY motif is the first example of PY motif recognition by a WW domain with a Phe substituted for the binding site Trp. This unusual interaction allows the Smurf2 WW3 domain to recognize a subset of PY motif-containing proteins utilizing an expanded surface to provide specificity.


    Organizational Affiliation

    Program in Structural Biology and Biochemistry, Hospital for Sick Children, Toronto M5G 1X8.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Smad ubiquitination regulatory factor 2A42Homo sapiensMutation(s): 0 
Gene Names: SMURF2
EC: 6.3.2 (PDB Primary Data), 2.3.2.26 (UniProt)
Find proteins for Q9HAU4 (Homo sapiens)
Explore Q9HAU4 
Go to UniProtKB:  Q9HAU4
NIH Common Fund Data Resources
PHAROS  Q9HAU4
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Mothers against decapentaplegic homolog 7B20Homo sapiensMutation(s): 0 
Gene Names: SMAD7MADH7MADH8
Find proteins for O15105 (Homo sapiens)
Explore O15105 
Go to UniProtKB:  O15105
NIH Common Fund Data Resources
PHAROS  O15105
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 30 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2DJY Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-02
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance