| Assay Method Information | |
| | Evaluation of Human PLD2 Enzyme Inhibitory Activity |
| Description: | A DMSO or test substance solution (the DMSO final concentration: 5%) prepared by diluting DMSO or test substance with an Assay buffer (50 mmol/L HEPES pH 7.5, 80 mmol/L KCl, 3 mmol/L EGTA, 3.6 mmol/L MgCl2, 0.01% NP-40, 0.1% BSA), and the solution was added to a 384 well Assay Plate (Black, Polystyrene, Non-Treated, Cat No. 3573, Corning) by 5 μL/well. A full-length human PLD2 enzyme solution (6 nmol/L) diluted with an Assay buffer was added thereto by 5 μL/well (the Assay buffer was added to blank wells). A 1,2-diheptanoyl-sn-glycero-3-phosphocholine (Avanti Polar Lipids) substrate solution (6 mmol/L) diluted with an Assay buffer was added thereto by 5 μL/well, and enzymatic reaction was carried out at room temperature for 60 minutes. Immediately before stopping the reaction, a detection solution (200 μmol/L AmplexRed (Thermofisher), 0.1 U/mL Choline Oxidase (Sigma-Aldrich), 4 U/mL Horseradish peroxidase (Thermofisher)) containing 4 μmol/L of 5-fluoro-2-indolyl deschlorohalopemide (R&D Systems) as a reaction terminator was prepared with an Assay buffer, the detection solution was added thereto at 5 μL/well to terminate the enzymatic reaction. Immediately after stopping the reaction and 30 minutes after incubation at room temperature, the fluorescence values at Ex: 531 nm/Em: 590 nm were measured by ARVO X5 (PerkinElmer). The inhibition rate was calculated from the change in the fluorescence values immediately after stopping the reaction and after 30 minutes. |
| Affinity data for this assay | |
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