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Assay Method Information

Assay Name:  Biological Assay
Description:  Assay buffer was 50 mM Tris pH 7.5 containing 1 mM EGTA (ethylene glycol tetraacetic acid), 1 mM DTT (dithiothreitol), 0.1 mM Na3VO4, 5 mM MgCl2, 0.01% Tween 20. Assays were carried out in 384 well Mesoscale high binding plates which had been coated with myelin basic protein (MBP) and blocked with bovine serum albumin to prevent non-specific protein binding. All compounds tested were dissolved in dimethyl sulfoxide (DMSO) and further dilutions were made in assay buffer. Final DMSO concentration was 1% (v/v) in assays. Incubations consisted of compound (1% DMSO in control and blank wells), 25 μM Adenosine-5′-triphosphate (ATP), and 10 nM NIK/MAP3K14 substituting enzyme with buffer in the blank wells. Incubations were carried out for 1 h at 25° C. and were followed by washing and sequential incubation with rabbit anti-phospho-MBP and anti-rabbit Ig Sulfotag antibody before reading bound Sulfotag on a Mesoscale Discovery. Signal obtained in the wells containing blank samples was subtracted from all other wells and IC50's were determined by fitting a sigmoidal curve to % inhibition of control versus Log10 compound concentration.
Affinity data for this assay
 

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Last update November 1, 2007
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