| Assay Method Information | |
| | Inhibitory Effect of DGKepsilon |
| Description: | To a 384-well plate (Greiner Bio-One Co., Ltd.), 3 μL of a DGK Δ enzyme dissolved in an assay buffer (40 mM Tris-HCl pH 7.5, 10 mM MgCl2, 1 mM dithiothreitol (DTT) and 0.1 mg/mL bovine serum albumin (BSA)) (90 ng/mL) was added, and 3 μL of the test compound diluted with the same assay buffer was added so that an intended final concentration was obtained. The mixture was left standing at room temperature for 15 minutes, 3 μL of a substrate (150 μM 1-oleoyl-2-acetyl-sn-glycerol (Sigma-Aldrich Co. LLC.), 480 μM phosphatidylserine (Avanti Polar Lipids, Inc.) and 150 μM UltraPure-ATP (attached to ADP-Glo)) was then added, and the mixture was left standing at room temperature for 30 minutes to react. Thereafter, 3 μL of an ADP-Glo Reagent was added, and the mixture was left standing at room temperature for 40 minutes to stop the enzyme reaction. Further, 6 μL of a Kinase-Detection Reagent was added, the mixture was left standing at room temperature for 30 minutes, and the luminescence was then measured using ARVO X3 (PerkinElmer, Inc.). The half maximal inhibitory concentration (IC50) was calculated by Sigmoid-Emax model non-linear regression analysis, where the signal value in solvent treatment was set to 0% inhibition and the signal value without addition of the DGK ξ enzyme was set to 100% inhibition. |
| Affinity data for this assay | |
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