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| | Enzyme Inhibitory Assay |
| Description: | TABLE 5: An overview of evaluation of an inhibitory effect of a compound of the present invention with respect to ALK2 is as follows. In a buffer solution (20 mM HEPES, pH 7.5, 10 mM MgCl2, 2 mM MnCl2, 1 mM EGTA, 0.02% Brij 35, 0.02 mg/mL BSA, 0.1 mM Na3VO4, 2 mM DTT, 1% DMSO), human ALK2 (http://www.expasy.org/uniprot/Q04771) and a substrate (20 μM casein) were incubated at room temperature for 20 minutes together with test compound, 33P-ATP (specific radioactivity: 10 Ci/L) was then added thereto so that the final ATP concentration was 10 μM, and the mixture was additionally incubated at room temperature for 2 hours. The reaction mixture was filtered using a P81 ion exchange filter, and a kinase activity was determined by measuring a radioactivity bound to the filter. An inhibitory effect was determined using test compounds with respective concentrations, and a concentration (IC50) indicating 50% of the maximum inhibitory concentration was calculated. |
| Affinity data for this assay | |
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