| Assay Method Information | |
| | Biological Assay |
| Description: | The percent inhibition of USP7 at 100 μM of each compound was determined prior to the determination of IC50 values. The final concentration of substrate was held constant at 200 nM and USP7 was held constant at a final concentration of 1 nM in Assay Buffer (50 mM Tris pH 7.5, 5 mM DTT, 0.1 mg/mL BSA, and 0.01% Triton X-100). From the 10 mM stock, each compound to be tested was diluted to a working concentration of 3 mM in 100% DMSO. The assay was performed as follows: 1 μL of the working stock of compound was added to a Costar 96 half-volume black plate to which 15 μL of USP7 was added. Plates were gently mixed and incubated at room temperature for five minutes. To initiate the reaction, 15 μL of Ub-Rho110 was added. Each assay was measured in triplicate. A negative control of Ub-Rho110 alone was measured to evaluate the background rate. Control reactions of USP7 without compound (DMSO only) were included to measure the rate of the uninhibited USP7 reaction. All reactions contained a final concentration of 3% DMSO. The reaction progress was measured as a filter based assay in 10-second intervals for a total of 30 minutes at an excitation wavelength of 485 nm and an emission wavelength of 528 nm. |
| Affinity data for this assay | |
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