| Assay Method Information | |
| | In Vitro DGKalpha and DGKdelta Inhibition Assays |
| Description: | For compound inhibition studies, 40 nL test compound in DMSO was added to wells of white polystyrene plates in 384-well (Greiner, #784075) or 1536-well format (Greiner, #782075). Compounds were added with top concentration of 2 mM with 11 point, 3-fold dilution series. Enzyme solution (contains 2× DGK enzyme concentration in 1× assay buffer) was added to the plate in 2 μL/well volume, followed by 2 μL/well of substrate solution (contains 2× concentration of ATP and DLG substrate in 1× assay buffer). Plates were then centrifuged for 1 min at 1200 RPM and sealed or lidded. For 4 μL reaction volume, test compounds were therefore diluted 100× to final top concentration of 20 μM. After 90 minute incubation, reactions were quenched by addition of 2 μL/well Promega ADP-Glo Reagent, followed by centrifugation and lidding. After 60 min incubation, 2 μL/well Promega Kinase Detection Reagent was added, plates centrifuged, and incubated for 30 min. Plates were then read using Luminescence method on BMG PHERAstar FSX plate reader. Percent inhibition was calculated and IC50s were determined using 4-parameter fit in Genedata Screener. Labcyte Echo acoustic dispenser was used for compound addition, and Formulatrix Tempest liquid handler was used for all reagent dispenses. |
| Affinity data for this assay | |
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