alloswitch-1   Click here for help

GtoPdb Ligand ID: 8543

Synonyms: trans-alloswitch-1
PDB Ligand
Compound class: Synthetic organic
Comment: Alloswitch-1 is the first reported photo-switchable negative allosteric modulator (NAM) for an endogenous G protein-coupled receptor [2], in this case a NAM of the mGlu5 metabotropic glutamate receptor. Violet light isomerizes the trans molecule to the cis molecule and green light reverses this isomerization [2]. In dark conditions trans-alloswitch-1 antagonizes IP production by quisqualate (orthosteric agonist)-activated mGlu5 receptors. Exposure to violet light reduces this level of antagonism, indicating that the cis-isomer is less active as a NAM than the trans-isomer [2].
The development of photo-switchable compounds is being pursued by pharmaceutical companies as a method to improve pharmacological selectivity by allowing precise spatio-temporal regulation of drug action [1].
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
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 CDK toolkit. 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 5
Hydrogen bond donors 1
Rotatable bonds 6
Topological polar surface area 75.94
Molecular weight 366.09
XLogP 5.12
No. Lipinski's rules broken 1
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.

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Canonical SMILES COc1cc(N=Nc2ccccn2)ccc1NC(=O)c1ccccc1Cl
Isomeric SMILES COc1cc(/N=N/c2ccccn2)ccc1NC(=O)c1ccccc1Cl
InChI InChI=1S/C19H15ClN4O2/c1-26-17-12-13(23-24-18-8-4-5-11-21-18)9-10-16(17)22-19(25)14-6-2-3-7-15(14)20/h2-12H,1H3,(H,22,25)/b24-23+
InChI Key JJRNGNCTPCWXGM-WCWDXBQESA-N
References
1. Hauwert NJ, Mocking TAM, Da Costa Pereira D, Kooistra AJ, Wijnen LM, Vreeker GCM, Verweij EWE, De Boer AH, Smit MJ, De Graaf C et al.. (2018)
Synthesis and Characterization of a Bidirectional Photoswitchable Antagonist Toolbox for Real-Time GPCR Photopharmacology.
J Am Chem Soc, 140 (12): 4232-4243. [PMID:29470065]
2. Pittolo S, Gómez-Santacana X, Eckelt K, Rovira X, Dalton J, Goudet C, Pin JP, Llobet A, Giraldo J, Llebaria A et al.. (2014)
An allosteric modulator to control endogenous G protein-coupled receptors with light.
Nat Chem Biol, 10 (10): 813-5. [PMID:25173999]