6VCC

Cryo-EM structure of the Dvl2 DIX filament


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report



Literature

Limited Dishevelled/Axin oligomerization determines efficiency of Wnt/ beta-catenin signal transduction.

Kan, W.Enos, M.D.Korkmazhan, E.Muennich, S.Chen, D.H.Gammons, M.V.Vasishtha, M.Bienz, M.Dunn, A.R.Skiniotis, G.Weis, W.I.

(2020) Elife 9

  • DOI: 10.7554/eLife.55015
  • Primary Citation of Related Structures:  
    6VCC

  • PubMed Abstract: 
  • In Wnt/β-catenin signaling, the transcriptional coactivator β-catenin is regulated by its phosphorylation in a complex that includes the scaffold protein Axin and associated kinases. Wnt binding to its coreceptors activates the cytosolic effector Disheve ...

    In Wnt/β-catenin signaling, the transcriptional coactivator β-catenin is regulated by its phosphorylation in a complex that includes the scaffold protein Axin and associated kinases. Wnt binding to its coreceptors activates the cytosolic effector Dishevelled (Dvl), leading to the recruitment of Axin and the inhibition of β-catenin phosphorylation. This process requires interaction of homologous DIX domains present in Dvl and Axin, but is mechanistically undefined. We show that Dvl DIX forms antiparallel, double-stranded oligomers in vitro, and that Dvl in cells forms oligomers typically <10 molecules at endogenous expression levels. Axin DIX (DAX) forms small single-stranded oligomers, but its self-association is stronger than that of DIX. DAX caps the ends of DIX oligomers, such that a DIX oligomer has at most four DAX binding sites. The relative affinities and stoichiometry of the DIX-DAX interaction provide a mechanism for efficient inhibition of β-catenin phosphorylation upon Axin recruitment to the Wnt receptor complex.


    Organizational Affiliation

    Graduate Program in Biophysics, Stanford University, Stanford, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Segment polarity protein dishevelled homolog DVL-2ABCDEFGHABCDEFGHIJKL
83Mus musculusMutation(s): 0 
Gene Names: Dvl2
Find proteins for Q60838 (Mus musculus)
Explore Q60838 
Go to UniProtKB:  Q60838
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.60 Å
  • Aggregation State: HELICAL ARRAY 
  • Reconstruction Method: HELICAL 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesR35 GM131747

Revision History 

  • Version 1.0: 2020-04-29
    Type: Initial release