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GRA2   Click here for help

GtoPdb Ligand ID: 13991

Compound class: Synthetic organic
Comment: GRA2 is reported to act as an inverse agonist of GPR21 [1].
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/). All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 4
Hydrogen bond donors 1
Rotatable bonds 7
Topological polar surface area 47.56
Molecular weight 369.41
XLogP 3.19
No. Lipinski's rules broken 0

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)

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Canonical SMILES C1=CC=C(C=C1)OC2=C(C=CC=C2)NC(=O)COC3=CC=CC4=C3C=CC=C4
Isomeric SMILES C1=CC=C(C=C1)OC2=CC=CC=C2NC(=O)COC3=CC=CC4=CC=CC=C43
InChI InChI=1S/C24H19NO3/c26-24(17-27-22-16-8-10-18-9-4-5-13-20(18)22)25-21-14-6-7-15-23(21)28-19-11-2-1-3-12-19/h1-16H,17H2,(H,25,26)
InChI Key DHEDDHQEGVSGOT-UHFFFAOYSA-N

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
Bioactivity Comments
Inhibits basal (constitutive) GPR21-mediated IP1 production in macrophages at μM concentrations [1].
Targets where the ligand is described in the comment field
Target Comment
GPR21 Positive benefit in models of diabetes/obesity [2,4] were not observed in another study [5]. A cryo-EM structure of unliganded GPR21 bound to G proteins has been reported [3]. GRA2 is reported as an inverse agonist [1].