compound 5b [PMID: 29457898]   Click here for help

GtoPdb Ligand ID: 9835

Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: Vβ9/Vδ2 T-cells have been shown to be activated by small molecule phosphoantigens (PAgs). The aryloxy triester phosphoramidate prodrug ProPAgen 5b is a potent and specific activator of these cells as a potential immunotherapeutic agent [1]. The molecular mechanism of action is unkown but evidence supports PAgs binding the intracellular B30.2 domain of butyrophilin 3A1.
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 6
Hydrogen bond donors 1
Rotatable bonds 15
Topological polar surface area 92.9
Molecular weight 533.24
XLogP 5.9
No. Lipinski's rules broken 2
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 CC(=CCOP(=O)(NC(C(=O)OCc1ccccc1)C)Oc1ccccc1)CO[Si](C(C)(C)C)(C)C
Isomeric SMILES C/C(=C\COP(=O)(N[C@H](C(=O)OCc1ccccc1)C)Oc1ccccc1)/CO[Si](C(C)(C)C)(C)C
InChI InChI=1S/C27H40NO6PSi/c1-22(20-33-36(6,7)27(3,4)5)18-19-32-35(30,34-25-16-12-9-13-17-25)28-23(2)26(29)31-21-24-14-10-8-11-15-24/h8-18,23H,19-21H2,1-7H3,(H,28,30)/b22-18+/t23-,35?/m0/s1
InChI Key OAOYKSGPQULCDH-WHZCJLAPSA-N
Immunopharmacology Comments
Present since birth,1 Vγ9/Vδ2 T-cells represent the dominant subtype of human γδ T-cells in adult peripheral blood. They expand in response to various infections, including tuberculosis, leprosy, typhoid, malaria, and toxoplasmosis, and studies in primate models have suggested a role in immunity to Mycobacterium tuberculosis. Interestingly, they also exhibited an ability to target and lyse a diverse range of cancer cells in vitro. Such properties have made the Vγ9/Vδ2 subset a major focus in the therapeutic exploitation of γδ T-cells.