| Assay Method Information | |
| | Biochemical Activity Assay |
| Description: | The assays were performed in 384-well, low volume microtiter assay plates in a final reaction volume of 9 ul. Dose-response curves were generated by incubating 3 nM of each kinase together with 2 uM of a fluorescently labeled substrate peptide specific for each enzyme (Jak1 and Jak3 substrate FITC-Ahx-KKSRGDYMTMQIG-NH2, Jak2 and Tyk2 substrate 5(6)-Carboxyfluorescein-Ahx-GGEEEEYFELVKKKK) in 50 mM Hepes pH 7.5, 0.02% Tween 20, 0.02% BSA, 1 mM DTT, 10 uM Na3VO4, 10 mM -Glycerolphosphate, specific concentrations of MgCl2 (Jak1 12 mM, Jak2 and Tyk2 9 mM, Jak3 1.5 mM) and 45 uM ATP for 60 min at 30° C. in the presence or absence of compound diluted in DMSO. Kinase reaction were terminated by adding 15 ul STOP buffer (100 mM HEPES pH 7.5, 5% DMSO, 0.1% Caliper coating reagent, 10 mM EDTA, and 0.015% Brij35. |
| Affinity data for this assay | |
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