| Assay Method Information | |
| | Biochemical Assay |
| Description: | Table 2A: Indicative IC50s for compounds synthesised in Table 1 were determined against each of SIK1, SIK2 and SIK3 using a biochemical assay for SIK1, SIK2 or SIK3 activity (Free Choice Kinase Assay provided by ProQinase, Freiburg Germany). Briefly, a radiometric protein kinase assay (33PanQinase® Activity Assay) was used for measuring the kinase activity of the three protein kinases. All kinase assays were performed in 96-well FlashPlates™ from PerkinElmer (Boston, MA, USA) in a 50 ul reaction volume. The reaction cocktail was pipetted in four steps in the following order:20 ul of assay buffer (standard buffer)5 ul of ATP solution (in water)5 ul of test compound (in 10% DMSO)20 ul enzyme/substrate mix[0988]The assay for all protein kinases contained 70 mM HEPES-NaOH pH7.5, 3 mM MgCl2, 3 mM MnCl2, 3 uM Na-orthovanadate, 1.2 mM DTT, 50 μg/ml PEG20000, ATP (variable concentrations, corresponding to the apparent ATP-Km of the respective kinase, see Table 2B), [gamma-33P]-ATP (approx. 3.5×10{circumflex over ( )}5 cpm per well), protein kinase (variable amount, see Table 2B), and substrate (variable amounts, see Table 2B). |
| Affinity data for this assay | |
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