| Assay Method Information | |
| | JAK Kinase Assay |
| Description: | Compounds were prepared in the exact same manner as described in the ROCK Kinase Assay with the exception to the substrate and enzyme. The JAK 2× substrate/enzyme solution consisted of acceptor substrate (800 nM Abl peptide EAIYAAPFAKKK (SEQ ID NO:2)), JAK1, TYK2, JAK2 or JAK3 enzyme (10 nM) and DTT (2 uM). All other steps and solutions remain identical to the ROCK Kinase Assay below. Results are shown above throughout the tables. ROCK Kinase Inhibition Assay: Test compounds were then serially diluted 1:5 in DMSO for an 11-point concentration response and further diluted in the assay buffer bringing all compound concentrations to a final range of 100 μM to 10 μM in 2.5% DMSO. The assay was performed in white 96-well, flat-bottom, half-area, non-binding assay plate (Corning #3642) in assay buffer consisting of 20 mM HEPES (pH 7.5), 10 mM MgCl2*6H2O, 100 μM sodium orthovanadate, 0.05% CHAPS and 0.1% bovine serum albumin. A 10 μL aliquot of compound from each well of the intermediate dilution plate and 20 μL of a 2× substrate/enzyme solution containing acceptor substrate (800 nM RSK2 peptide KRRRLSSLRA (SEQ ID NO: 1)), ROCK2 enzyme (10 nM), or ROCK1 enzyme, and 1,4-Dithiothreitol (DTT, 2 uM) were added to all wells. The reaction was initiated by the addition of 10 μL of 4× stock solution ATP (2 μM). Reactions were thoroughly mixed manually, covered, and allowed to incubate at room temperature for 75 min. Protein kinase activity was quantitated using Promega's KINASE-GLO™ luminescent Kinase Assay Kit according to the manufacturer's directions. ATP concentrations remaining in Test wells following the termination of the enzymatic reaction were compared against control wells containing equivalent amounts of DMSO containing no inhibitor (CTRL). |
| Affinity data for this assay | |
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