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Assay Method Information

Assay Name:  Inhibition Assay
Description:  Recombinant human JAK1 (catalytic domain, amino acids 866-1154; catalog number PV4774) was purchased from Invitrogen. 1 ng of JAK1 was incubated with 20 nM Ulight-JAK1(tyr1023) peptide (Perkin Elmer catalog number TRF0121) in kinase reaction buffer (25 mM MOPS pH6.8, 0.016% Brij-35, 8.33 mM MgCl2, 3.33 mM DTT, 7 uM ATP) with or without 4 uL containing test compound or vehicle (DMSO, 1% final concentration), in a total volume of 20 uL, in a white 384 Luminotrac 200 plate (Greiner, catalog number 781075). After 60 min at room temperature, reactions were stopped by adding 20 uL/well of detection mixture (1x detection buffer (Perkin Elmer, catalog number CR97-100C), 0.5 nM Europium-anti-phosphotyrosine (PT66) (Perkin Elmer, catalog number AD0068), 10 mM EDTA). Readout is performed using the Envision with excitation at 320 nm and measuring emission at 615 nm (Perkin Elmer). Kinase activity was calculated by subtracting relative fluorescence units (RFU).
Affinity data for this assay
 

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Last update November 1, 2007
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