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Assay Method Information

Assay Name:  p38 MAPKalpha Enzyme Inhibition
Description:  The inhibitory activities of test compounds against the p38 MAPKα isoform (MAPK14: Invitrogen) are evaluated indirectly by determining the level of activation/phosphorylation of the down-stream molecule, MAPKAP-K2. The p38 MAPKα protein (80 ng/mL, 2.5 μL) is mixed with the test compound (2.5 μL of either 4 μg/mL, 0.4 μg/mL, 0.04 μg/mL or 0.004 μg/mL) for 2 hr at RT. The mix solution (2.5 μL) of the p38α inactive target MAPKAP-K2 (Invitrogen, 600 ng/mL) and FRET peptide (8 μM; a phosphorylation target for MAPKAP-K2) is then added, then the kinase reaction is initiated by adding ATP (40 μM, 2.5 μL). The mixture is incubated for 1 hr at RT. Development reagent (protease, 5 μL) is added for 1 hr prior to detection in a fluorescence microplate reader (Varioskan® Flash, ThermoFisher Scientific).
Affinity data for this assay
 

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Last update November 1, 2007
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