3S8V

Crystal structure of LRP6-Dkk1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.240 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structures of the extracellular domain of LRP6 and its complex with DKK1.

Cheng, Z.Biechele, T.Wei, Z.Morrone, S.Moon, R.T.Wang, L.Xu, W.

(2011) Nat.Struct.Mol.Biol. 18: 1204-1210

  • DOI: 10.1038/nsmb.2139
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Low-density-lipoprotein (LDL) receptor-related proteins 5 and 6 (LRP5/6) are Wnt co-receptors essential for Wnt/β-catenin signaling. Dickkopf 1 (DKK1) inhibits Wnt signaling by interacting with the extracellular domains of LRP5/6 and is a drug target ...

    Low-density-lipoprotein (LDL) receptor-related proteins 5 and 6 (LRP5/6) are Wnt co-receptors essential for Wnt/β-catenin signaling. Dickkopf 1 (DKK1) inhibits Wnt signaling by interacting with the extracellular domains of LRP5/6 and is a drug target for multiple diseases. Here we present the crystal structures of a human LRP6-E3E4-DKK1 complex and the first and second halves of human LRP6's four propeller-epidermal growth factor (EGF) pairs (LRP6-E1E2 and LRP6-E3E4). Combined with EM analysis, these data demonstrate that LRP6-E1E2 and LRP6-E3E4 form two rigid structural blocks, with a short intervening hinge that restrains their relative orientation. The C-terminal domain of DKK1 (DKK1c) interacts with the top surface of the LRP6-E3 YWTD propeller and given their structural similarity, probably also that of the LRP6-E1 propeller, through conserved hydrophobic patches buttressed by a network of salt bridges and hydrogen bonds. Our work provides key insights for understanding LRP5/6 structure and the interaction of LRP5/6 with DKK, as well as for drug discovery.


    Organizational Affiliation

    Department of Biological Structure, University of Washington School of Medicine, Seattle, Washington, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Low-density lipoprotein receptor-related protein 6
A, B
623Homo sapiensMutation(s): 0 
Gene Names: LRP6
Find proteins for O75581 (Homo sapiens)
Go to Gene View: LRP6
Go to UniProtKB:  O75581
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Dickkopf-related protein 1
X
88Homo sapiensMutation(s): 0 
Gene Names: DKK1
Find proteins for O94907 (Homo sapiens)
Go to Gene View: DKK1
Go to UniProtKB:  O94907
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.1 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.240 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 94.384α = 90.00
b = 105.050β = 90.00
c = 161.226γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
ADSCdata collection
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2011-05-31 
  • Released Date: 2011-10-26 
  • Deposition Author(s): Cheng, Z., Xu, W.

Revision History 

  • Version 1.0: 2011-10-26
    Type: Initial release
  • Version 1.1: 2011-11-23
    Type: Database references