mGlur2 with glutamate analog

Experimental Data Snapshot

  • Resolution: 2.65 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.2 of the entry. See complete history


Synthesis and Pharmacological Characterization of C4-(Thiotriazolyl)-substituted-2-aminobicyclo[3.1.0]hexane-2,6-dicarboxylates. Identification of (1R,2S,4R,5R,6R)-2-Amino-4-(1H-1,2,4-triazol-3-ylsulfanyl)bicyclo[3.1.0]hexane-2,6-dicarboxylic Acid (LY2812223), a Highly Potent, Functionally Selective mGlu2 Receptor Agonist.

Monn, J.A.Prieto, L.Taboada, L.Hao, J.Reinhard, M.R.Henry, S.S.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.Getman, B.G.Catlow, J.T.Swanson, S.Johnson, B.G.Shaw, D.B.McKinzie, D.L.

(2015) J Med Chem 58: 7526-7548

  • DOI: https://doi.org/10.1021/acs.jmedchem.5b01124
  • Primary Citation of Related Structures:  
    5CNI, 5CNJ, 5CNK, 5CNM

  • PubMed Abstract: 

    Identification of orthosteric mGlu(2/3) receptor agonists capable of discriminating between individual mGlu2 and mGlu3 subtypes has been highly challenging owing to the glutamate-site sequence homology between these proteins. Herein we detail the preparation and characterization of a series of molecules related to (1S,2S,5R,6S)-2-aminobicyclo[3.1.0]hexane-2,6-dicarboxylate 1 (LY354740) bearing C4-thiotriazole substituents. On the basis of second messenger responses in cells expressing other recombinant human mGlu2/3 subtypes, a number of high potency and efficacy mGlu2 receptor agonists exhibiting low potency mGlu3 partial agonist/antagonist activity were identified. From this, (1R,2S,4R,5R,6R)-2-amino-4-(1H-1,2,4-triazol-3-ylsulfanyl)bicyclo[3.1.0]hexane-2,6-dicarboxylic acid 14a (LY2812223) was further characterized. Cocrystallization of 14a with the amino terminal domains of hmGlu2 and hmGlu3 combined with site-directed mutation studies has clarified the underlying molecular basis of this unique pharmacology. Evaluation of 14a in a rat model responsive to mGlu2 receptor activation coupled with a measure of central drug disposition provides evidence that this molecule engages and activates central mGlu2 receptors in vivo.

  • Organizational Affiliation

    Discovery Chemistry Research and Technologies, ‡Quantitative Biology, §Structural Biology, ∥Drug Disposition and ⊥Neuroscience Research, Eli Lilly and Company , Lilly Corporate Center, Drop 0510, 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
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ14416
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on 52Q

Download Ideal Coordinates CCD File 
D [auth A],
E [auth B]
(1R,2S,4R,5R,6R)-2-amino-4-(1H-1,2,4-triazol-3-ylsulfanyl)bicyclo[3.1.0]hexane-2,6-dicarboxylic acid
C10 H12 N4 O4 S
Query on NAG

Download Ideal Coordinates CCD File 
C [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
Experimental Data & Validation

Experimental Data

  • Resolution: 2.65 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 80.391α = 90
b = 155.087β = 90
c = 92.714γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2015-09-09
    Type: Initial release
  • Version 1.1: 2015-10-07
    Changes: Database references
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Database references, Derived calculations, Structure summary