4LI1

Crystal Structures of Lgr4 and its complex with R-spondin1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.658 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structures of lgr4 and its complex with R-spondin1.

Xu, K.Xu, Y.Rajashankar, K.R.Robev, D.Nikolov, D.B.

(2013) Structure 21: 1683-1689

  • DOI: 10.1016/j.str.2013.07.001
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The leucine-rich repeat-containing G-protein-coupled receptors (Lgrs) are a large membrane protein family mediating signaling events during development and in the adult organism. Type 2 Lgrs, including Lgr4, Lgr5, and Lgr6, play crucial roles in embr ...

    The leucine-rich repeat-containing G-protein-coupled receptors (Lgrs) are a large membrane protein family mediating signaling events during development and in the adult organism. Type 2 Lgrs, including Lgr4, Lgr5, and Lgr6, play crucial roles in embryonic development and in several cancers. They also regulate adult stem cell maintenance via direct association with proteins in the Wnt signaling pathways, including Lrp5/6 and frizzled receptors. The R-spondins (Rspo) were recently identified as functional ligands for type 2 Lgrs and were shown to synergize with both canonical and noncanonical Wnt signaling pathways. We determined and report the structure of the Lgr4 ectodomain alone and bound to Rspo1. The structures reveal an extended horseshoe leucine-rich repeat (LRR) receptor architecture that binds, with its concave side, the ligand furin-like repeats via an intimate interface. The molecular details of ligand/receptor recognition provide insight into receptor activation and could serve as template for stem-cell-based regenerative therapeutics development.


    Organizational Affiliation

    Structural Biology Program, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY 10021, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Leucine-rich repeat-containing G-protein coupled receptor 4
B, A
432Xenopus tropicalisMutation(s): 0 
Gene Names: lgr4
Find proteins for B0BLW3 (Xenopus tropicalis)
Go to UniProtKB:  B0BLW3
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
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: 2.658 Å
  • R-Value Free: 0.272 
  • R-Value Work: 0.216 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 60.290α = 90.00
b = 158.582β = 90.00
c = 227.609γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
SHELXphasing
PDB_EXTRACTdata extraction
PHENIXrefinement
SHELXDphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-07
    Type: Initial release
  • Version 1.1: 2013-09-25
    Type: Database references