5BQC

Crystal structure of Norrin in complex with the cysteine-rich domain of Frizzled 4 and sucrose octasulfate

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history. 

Literature

Structure and functional properties of Norrin mimic Wnt for signalling with Frizzled4, Lrp5/6, and proteoglycan.

Chang, T.H., Hsieh, F.L., Zebisch, M., Harlos, K., Elegheert, J., Jones, E.Y.

(2015) Elife 4: e06554

  • DOI: 10.7554/eLife.06554
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    • Wnt signalling regulates multiple processes including angiogenesis, inflammation, and tumorigenesis. Norrin (Norrie Disease Protein) is a cystine-knot like growth factor. Although unrelated to Wnt, Norrin activates the Wnt/β-catenin pathway. Signal c ...

    Wnt signalling regulates multiple processes including angiogenesis, inflammation, and tumorigenesis. Norrin (Norrie Disease Protein) is a cystine-knot like growth factor. Although unrelated to Wnt, Norrin activates the Wnt/β-catenin pathway. Signal complex formation involves Frizzled4 (Fz4), low-density lipoprotein receptor related protein 5/6 (Lrp5/6), Tetraspanin-12 and glycosaminoglycans (GAGs). Here, we report crystallographic and small-angle X-ray scattering analyses of Norrin in complex with Fz4 cysteine-rich domain (Fz4CRD), of this complex bound with GAG analogues, and of unliganded Norrin and Fz4CRD. Our structural, biophysical and cellular data, map Fz4 and putative Lrp5/6 binding sites to distinct patches on Norrin, and reveal a GAG binding site spanning Norrin and Fz4CRD. These results explain numerous disease-associated mutations. Comparison with the Xenopus Wnt8-mouse Fz8CRD complex reveals Norrin mimics Wnt for Frizzled recognition. The production and characterization of wild-type and mutant Norrins reported here open new avenues for the development of therapeutics to combat abnormal Norrin/Wnt signalling.

    Organizational Affiliation: 

    Division of Structural Biology, Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Frizzled-4
B
149Homo sapiensMutation(s): 0 
Gene Names: FZD4
Find proteins for Q9ULV1 (Homo sapiens)
Go to Gene View: FZD4
Go to UniProtKB:  Q9ULV1
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Norrin
A
122Homo sapiensMutation(s): 0 
Gene Names: NDP (EVR2)
Find proteins for Q00604 (Homo sapiens)
Go to Gene View: NDP
Go to UniProtKB:  Q00604
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SCR
Query on SCR
Download SDF File 
Download CCD File 
A
SUCROSE OCTASULFATE
C12 H22 O35 S8
WEPNHBQBLCNOBB-UGDNZRGBSA-N
 Ligand Interaction
NAG
Query on NAG
Download SDF File 
Download CCD File 
B
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.215 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 119.136α = 90.00
b = 119.136β = 90.00
c = 119.151γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
MOSFLMdata reduction
PHASERphasing
PDB_EXTRACTdata extraction
Cootmodel building

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomG0900084
Cancer Research UKUnited KingdomC375/A10976
Wellcome TrustUnited Kingdom090532/Z/09/Z

Revision History 

  • Version 1.0: 2015-07-01
    Type: Initial release
  • Version 1.1: 2015-07-22
    Type: Database references
  • Version 1.2: 2015-07-29
    Type: Database references
  • Version 1.3: 2017-09-13
    Type: Author supporting evidence