mGluR2 ECD and mGluR3 ECD with ligands

Experimental Data Snapshot

  • Resolution: 2.21 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.188 

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Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


Synthesis and Pharmacological Characterization of C4-Disubstituted Analogs of 1S,2S,5R,6S-2-Aminobicyclo[3.1.0]hexane-2,6-dicarboxylate: Identification of a Potent, Selective Metabotropic Glutamate Receptor Agonist and Determination of Agonist-Bound Human mGlu2 and mGlu3 Amino Terminal Domain Structures.

Monn, J.A.Prieto, L.Taboada, L.Pedregal, C.Hao, J.Reinhard, M.R.Henry, S.S.Goldsmith, P.J.Beadle, C.D.Walton, L.Man, T.Rudyk, H.Clark, B.Tupper, D.Baker, S.R.Lamas, C.Montero, C.Marcos, A.Blanco, J.Bures, M.Clawson, D.K.Atwell, S.Lu, F.Wang, J.Russell, M.Heinz, B.A.Wang, X.Carter, J.H.Xiang, C.Catlow, J.T.Swanson, S.Sanger, H.Broad, L.M.Johnson, M.P.Knopp, K.L.Simmons, R.M.Johnson, B.G.Shaw, D.B.McKinzie, D.L.

(2015) J Med Chem 58: 1776-1794

  • DOI: https://doi.org/10.1021/jm501612y
  • Primary Citation of Related Structures:  
    4XAQ, 4XAR, 4XAS

  • PubMed Abstract: 

    As part of our ongoing research to identify novel agents acting at metabotropic glutamate 2 (mGlu2) and 3 (mGlu3) receptors, we have previously reported the identification of the C4α-methyl analog of mGlu2/3 receptor agonist 1 (LY354740). This molecule, 1S,2S,4R,5R,6S-2-amino-4-methylbicyclo[3.1.0]hexane-2,6-dicarboxylate 2 (LY541850), exhibited an unexpected mGlu2 agonist/mGlu3 antagonist pharmacological profile, whereas the C4β-methyl diastereomer (3) possessed dual mGlu2/3 receptor agonist activity. We have now further explored this structure-activity relationship through the preparation of cyclic and acyclic C4-disubstituted analogs of 1, leading to the identification of C4-spirocyclopropane 5 (LY2934747), a novel, potent, and systemically bioavailable mGlu2/3 receptor agonist which exhibits both antipsychotic and analgesic properties in vivo. In addition, through the combined use of protein-ligand X-ray crystallography employing recombinant human mGlu2/3 receptor amino terminal domains, molecular modeling, and site-directed mutagenesis, a molecular basis for the observed pharmacological profile of compound 2 is proposed.

  • Organizational Affiliation

    Discovery Chemistry Research and Technologies, ‡Quantitative Biology, §Structural Biology, ∥Drug Disposition, and ⊥Neuroscience Research, Eli Lilly and Company , Indianapolis, Indiana 46285, United States.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Metabotropic glutamate receptor 2
A, B
503Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q14416 (Homo sapiens)
Explore Q14416 
Go to UniProtKB:  Q14416
PHAROS:  Q14416
GTEx:  ENSG00000164082 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14416
Sequence Annotations
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
40F BindingDB:  4XAQ Ki: min: 11, max: 476 (nM) from 9 assay(s)
IC50: min: 5.6, max: 7 (nM) from 2 assay(s)
EC50: min: 5.1, max: 35 (nM) from 9 assay(s)
Binding MOAD:  4XAQ Ki: 71.7 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Resolution: 2.21 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.188 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 81.644α = 90
b = 159.652β = 90
c = 93.88γ = 90
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
MOSFLMdata reduction

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-02-04
    Type: Initial release
  • Version 1.1: 2015-03-11
    Changes: Database references
  • Version 1.2: 2017-11-22
    Changes: Database references, Derived calculations, Refinement description, Source and taxonomy