4C8C

mouse ZNRF3 ectodomain crystal form III


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.236 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural and Molecular Basis of Znrf3/Rnf43 Transmembrane Ubiquitin Ligase Inhibition by the Wnt Agonist R-Spondin.

Zebisch, M.Xu, Y.Krastev, C.Macdonald, B.T.Chen, M.Gilbert, R.J.C.He, X.Jones, E.Y.

(2013) Nat.Commun. 4: 2787

  • DOI: 10.1038/ncomms3787
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The four R-spondin (Rspo) proteins are secreted agonists of Wnt signalling in vertebrates, functioning in embryogenesis and adult stem cell biology. Through ubiquitination and degradation of Wnt receptors, the transmembrane E3 ubiquitin ligase ZNRF3 ...

    The four R-spondin (Rspo) proteins are secreted agonists of Wnt signalling in vertebrates, functioning in embryogenesis and adult stem cell biology. Through ubiquitination and degradation of Wnt receptors, the transmembrane E3 ubiquitin ligase ZNRF3 and related RNF43 antagonize Wnt signalling. Rspo ligands have been reported to inhibit the ligase activity through direct interaction with ZNRF3 and RNF43. Here we report multiple crystal structures of the ZNRF3 ectodomain (ZNRF3(ecto)), a signalling-competent Furin1-Furin2 (Fu1-Fu2) fragment of Rspo2 (Rspo2(Fu1-Fu2)), and Rspo2(Fu1-Fu2) in complex with ZNRF3(ecto), or RNF43(ecto). A prominent loop in Fu1 clamps into equivalent grooves in the ZNRF3(ecto) and RNF43(ecto) surface. Rspo binding enhances dimerization of ZNRF3(ecto) but not of RNF43(ecto). Comparison of the four Rspo proteins, mutants and chimeras in biophysical and cellular assays shows that their signalling potency depends on their ability to recruit ZNRF3 or RNF43 via Fu1 into a complex with LGR receptors, which interact with Rspo via Fu2.


    Organizational Affiliation

    Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford OX3 7BN, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 UBIQUITIN-PROTEIN LIGASE ZNRF3
A, B
165Mus musculusMutation(s): 0 
Gene Names: Znrf3
EC: 2.3.2.27
Find proteins for Q5SSZ7 (Mus musculus)
Go to UniProtKB:  Q5SSZ7
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.320 
  • R-Value Work: 0.236 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 58.206α = 90.00
b = 69.617β = 90.00
c = 75.411γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-20
    Type: Initial release
  • Version 1.1: 2013-11-27
    Type: Database references