| Assay Method Information | |
| | Enzymatic Assay |
| Description: | IRAK4 is a human purified recombinant enzyme (His-TEV-IRAK1 (194-712). IRAK4 hydrolyses ATP, autophosphorylates and phosphorylates a Serine/Threonine generic peptidic substrate (STK: 61ST1BLC from CisBio International based in Bagnols/C ze FR).Measurement of IRAK-4 inhibition was performed in streptavidin coated 384well FlashPlate (PerkinElmer #SMP410A). His-TEV-IRAK4 (20 ng/well), ATP (2 μM, [33P]ATP 0.25 Ci/well), STK1-biotin peptide (300 nM) and compounds in DMSO (range of concentrations from 20 M to 1 nM) or controls (2% DMSO) were incubated for 3 hours at 30° C. in assay buffer: Hepes pH7.0 50 mM, Fatty acid-free BSA 0.1%, Dithiothreitol DTT 2 mM, MgCl2 10 mM, EGTA 0.5 mM, Tween-20 0.01%, MnCl2 5 mM. |
| Affinity data for this assay | |
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