4LI2

Crystal Structures of Lgr4 and its complex with R-spondin1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.235 

wwPDB Validation 3D Report Full Report


This is version 1.2 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
  • Structures With Same Primary Citation

  • 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 4A432Xenopus tropicalisMutation(s): 1 
Gene Names: lgr4
Find proteins for B0BLW3 (Xenopus tropicalis)
Explore B0BLW3 
Go to UniProtKB:  B0BLW3
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
R-spondin-1B112Homo sapiensMutation(s): 0 
Gene Names: R-spondin1RSPO1
Find proteins for Q2MKA7 (Homo sapiens)
Explore Q2MKA7 
Go to UniProtKB:  Q2MKA7
NIH Common Fund Data Resources
PHAROS  Q2MKA7
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.19 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.229 
  • R-Value Observed: 0.235 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.379α = 90
b = 160.923β = 90
c = 82.216γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-08-07
    Type: Initial release
  • Version 1.1: 2013-09-25
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description