CHEMBL5737180

NTRK1 Wild Type Assay at 1 mM ATP: In each well of a 384-well plate, 1 nM-1.5 nM of wild type NTRK1 enzyme (BPS Bioscience; 40280) was incubated in a total of 12.5 μL of buffer (100 mM HEPES pH 7.5, 0.015% Brij 35, 10 mM MgCl2, 1 mM DTT) with 1-2 aM CSKtide (Tuft's University or Anaspec; FITC-AHA-KKKKD DIYFFFG-NH2) and 1 mM ATP at 25° C. for 60 minutes in the presence or absence of a dosed concentration series of compound (1% DMSO final concentration). The reaction was stopped by the addition of 70 μL of Stop buffer (100 mM HEPES pH 7.5, 0.015% Brij 35, 35 mM EDTA and 0.2% of Coating Reagent 3 (Caliper Lifesciences)). The plate was then read on a Caliper EZReader 2 (protocol settings: ˜1.7 psi, upstream voltage −500, downstream voltage −3000, post sample sip 35 s). Data was normalized to 0% and 100% inhibition controls and the IC50 calculated using a 4-parameter fit in the CORE LIMS.