Assay Method Information | |
| Tyk2 & JAK2 Radioactive Kinase Assay |
Description: | Peptide substrate, [KKSRGDYMTMQIG], (20 μM) is prepared in reaction buffer (20 mM Hepes pH 7.5, 10 mM MgCl2, 1 mM EGTA, 0.02% Brij35, 0.02 mg/mL BSA, 0.1 mM Na3PO4, 2 mM DTT, 1% DMSO. TYK2 (Invitrogen) kinase is added, followed by compounds in DMSO. 33PATP is added to initiate the reaction with ATP at 10 μM. Kinase reaction is incubated for 120 min at room temp and reactions are spotted onto P81 ion exchange paper (Whatman #3698-915), and then washed extensively in 0.75% phosphoric acid, prior to reading the radioactivity counts. For JAK2 (Invitrogen) kinase assay the peptide substrate poly[Glu:Tyr](4:1), 0.2 mg/ml is used, in the reaction carried out the same as for TYK2. |
Affinity data for this assay | |
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