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CRAC channel inhibitor 1 [PMID: 26256403]   Click here for help

GtoPdb Ligand ID: 10041

Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: Inhibitor 1 inhibits the ORAI1 protein component of the CRAC channel [1]. The chemical structure represents a novel ORAI1-specific chemotype that is suitable for the development of more refined CRAC channel inhibitors.
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 3
Hydrogen bond donors 2
Rotatable bonds 6
Topological polar surface area 41.13
Molecular weight 302.12
XLogP 4.57
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 CCC(c1ccc(cc1)C)NC(=O)Nc1ccc(cc1)Cl
Isomeric SMILES CCC(c1ccc(cc1)C)NC(=O)Nc1ccc(cc1)Cl
InChI InChI=1S/C17H19ClN2O/c1-3-16(13-6-4-12(2)5-7-13)20-17(21)19-15-10-8-14(18)9-11-15/h4-11,16H,3H2,1-2H3,(H2,19,20,21)
InChI Key FKBYZUDELOWDJW-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
Ca2+ influx mediated by constitutively opened CRAC channels is inhibited by inhibitor 1 with an IC50 of 200 nM, and 30 μM of the compound maximally inhibits the calcium level by ~80% [1].
Selectivity at ion channels
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
Orai1 Hs Channel blocker - - - - 1
⤷ [1]