Assay Method Information |
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| Enzymatic Activity Assay |
Description: | A Caliper-based kinase assay (Caliper Life Sciences, Hopkinton, Mass.) was used to measure inhibition of Btk kinase activity of a compound of Formula (IA), (I′) or (I). Serial dilutions of test compounds were incubated with human recombinant Btk (2 nM), ATP (40 μM) and a phosphoacceptor peptide substrate FAM-GEEPLYWSFPAKKK-NH2 (1 μM) at room temperature for 3 h. The reaction was then terminated with EDTA, final concentration 20 mM and the phosphorylated reaction product was quantified on a Caliper Desktop Profiler (Caliper LabChip 3000). Percent inhibition was calculated for each compound dilution and the concentration that produced 50% inhibition was calculated. |
Affinity data for this assay | |
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