2JTK

A functional domain of a Wnt signal protein


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural insight into the mechanisms of wnt signaling antagonism by dkk

Chen, L.Wang, K.Shao, Y.Huang, J.Li, X.Shan, J.Wu, D.Zheng, J.J.

(2008) J Biol Chem 283: 23364-23370

  • DOI: https://doi.org/10.1074/jbc.M802375200
  • Primary Citation of Related Structures:  
    2JTK

  • PubMed Abstract: 

    Dickkopf (Dkk) proteins are antagonists of the canonical Wnt signaling pathway and are crucial for embryonic cell fate and bone formation. Wnt antagonism of Dkk requires the binding of the C-terminal cysteine-rich domain of Dkk to the Wnt coreceptor, LRP5/6. However, the structural basis of the interaction between Dkk and low density lipoprotein receptor-related protein (LRP) 5/6 is unknown. In this study, we examined the structure of the Dkk functional domain and elucidated its interactions with LRP5/6. Using NMR spectroscopy, we determined the solution structure of the C-terminal cysteine-rich domain of mouse Dkk2 (Dkk2C). Then, guided by mutagenesis studies, we docked Dkk2C to the YWTD beta-propeller domains of LRP5/6 and showed that the ligand binding site of the third LRP5/6 beta-propeller domain matches Dkk2C best, suggesting that this domain binds to Dkk2C with higher affinity. Such differential binding affinity is likely to play an essential role in Dkk function in the canonical Wnt pathway.


  • Organizational Affiliation

    Department of Structural Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dickkopf-related protein 290Mus musculusMutation(s): 0 
Gene Names: Dkk2
UniProt
Find proteins for Q9QYZ8 (Mus musculus)
Explore Q9QYZ8 
Go to UniProtKB:  Q9QYZ8
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9QYZ8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the least restraint violations 

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-07-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2022-03-16
    Changes: Data collection, Database references, Derived calculations