2JQZ

Solution Structure of the C2 domain of human Smurf2


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • 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

Autoinhibition of the HECT-Type Ubiquitin Ligase Smurf2 through Its C2 Domain

Wiesner, S.Ogunjimi, A.A.Wang, H.-R.Rotin, D.Sicheri, F.Wrana, J.L.Forman-Kay, J.D.

(2007) Cell 130: 651-662

  • DOI: 10.1016/j.cell.2007.06.050
  • Primary Citation of Related Structures:  
    2JQZ

  • PubMed Abstract: 
  • Ubiquitination of proteins is an abundant modification that controls numerous cellular processes. Many Ubiquitin (Ub) protein ligases (E3s) target both their substrates and themselves for degradation. However, the mechanisms regulating their catalytic activity are largely unknown ...

    Ubiquitination of proteins is an abundant modification that controls numerous cellular processes. Many Ubiquitin (Ub) protein ligases (E3s) target both their substrates and themselves for degradation. However, the mechanisms regulating their catalytic activity are largely unknown. The C2-WW-HECT-domain E3 Smurf2 downregulates transforming growth factor-beta (TGF-beta) signaling by targeting itself, the adaptor protein Smad7, and TGF-beta receptor kinases for degradation. Here, we demonstrate that an intramolecular interaction between the C2 and HECT domains inhibits Smurf2 activity, stabilizes Smurf2 levels in cells, and similarly inhibits certain other C2-WW-HECT-domain E3s. Using NMR analysis the C2 domain was shown to bind in the vicinity of the catalytic cysteine, where it interferes with Ub thioester formation. The HECT-binding domain of Smad7, which activates Smurf2, antagonizes this inhibitory interaction. Thus, interactions between C2 and HECT domains autoinhibit a subset of HECT-type E3s to protect them and their substrates from futile degradation in cells.


    Organizational Affiliation

    Hospital for Sick Children, 555 University Avenue, Toronto, Ontario M5G 1X8, Canada. silke@pound.med.utoronto.ca



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase SMURF2A131Homo 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
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • OLDERADO: 2JQZ Olderado

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-09-11
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2020-02-19
    Changes: Database references, Derived calculations, Other