| Assay Method Information | |
| | PARG Enzyme Inhibition Assay |
| Description: | PARG in vitro assays were conducted in standard 384-well plates in a total volume of 15 μL. 5 μL of PARG (389-976) (manufactured by Chempartner Chemical Co., Ltd.) in buffer (50 mM Tris-HCL 7.5, 30 mM KCl, 1 mM EDTA, 3 mM DTT, tween-20 0.01%, BSA 0.025%) was added at a final concentration of 1.5 pM to the 384-well plates containing the compounds to be tested, which was incubated for 30 min at room temperature. To the above mixture was added 5 μL Bio PARylated His-TEV-PARP1 (2-1014) substrate (manufactured by Chempartner Chemical Co., Ltd.) at a final concentration of 12 nM, after addition, the resulting mixture was incubated for 30 minutes at room temperature. Then to the mixture was added detection reagent (5 μL) which was buffered with 50 mM Tris-HCL 7.5, 30 mM KCl, 1 mM EDTA, 3 mM DTT, tween-20 0.01%, BSA 0.025%, and consisted of 3 pM of compound PDD00017273 and 9 nM Mab anti-6HIS XL665 (Cisbio: 61HISXLA) and 0.9 nM streptavidin affinity terbium cryptate (Cisbio: 610SATLA), all at 3× working concentrations (final concentrations of 1 pM, 3 nM and 0.3 nM, respectively). After 120 min incubation in the dark at room temperature, TR-FRET signals were measured at Ex 340 and Em 665 and Em 615. The ratio for each well was calculated as Em 665/Em 615 and the compound inhibition rate was calculated based on the obtained data. |
| Affinity data for this assay | |
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