Assay Method Information

Assay Name:  SIK1, SIK2, and SIK3 inhibition test
Description:  The inhibitory activity of the compound for SIK1, SIK2, and SIK3 enzymes was assayed by measuring the amount of ADP, an enzyme reaction product, with ADP-Glo™ Max Assay (Promega). Enzymes, specifically, GST-tagged SIK1 (Carna Biosciences, Inc.), GST-tagged SIK2 (Carna Biosciences, Inc.), and GST-tagged SIK3 (SignalChem) were prepared in a reaction buffer (15 mM tris-hydrochloric acid buffer (pH 7.5), 0.001% Triton X-100, 0.01% BSA) so that the final concentration would be 20 nM, 3 nM, and 100 nM. Enzyme solutions were thus formed. In a reaction buffer, AMARA Peptide (SignalChem) as a substrate with a final concentration of 200 μM (SIK1, SIK2) or 100 μM (SIK3), ATP (Promega) with a final concentration of 1 mM, and magnesium chloride with a final concentration of 5 mM were prepared. Substrate solutions were thus formed. The enzyme solution, the substrate solution, and a DMSO solution of a concentration of the test compound were mixed together and reacted at room temperature for 2 hours. After the reaction, ADP-Glo™ Reagent (Promega) was added, and the reaction was performed at room temperature for 30 minutes. Subsequently, ADP-Glo™ Max Detection Reagent (Promega) was added, and the reaction was performed at room temperature for 30 minutes. The emission by the luciferase reaction was measured with PHERAstar FSX (BMG LABTECH).
Affinity data for this assay
 

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