Assay Method Information |
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| Fluorescence Polarization |
Description: | Assay buffer (25 μL, 20 mM HEPES pH 7.3, 50 mM KCl, 5 mM MgCl2, 1 mM DTT, 20 mM Na2MoO4, 0.01% NP-40, and 0.5 mg/mL BGG) was added to 96-well plate (black well, black bottom) followed by the desired compound at the indicated final concentrations in DMSO (1% DMSO final concentration). Recombinant cGrp94 (10 nM for compounds 2-27, 30 nM for compounds 28-48) and FITC-GDA were then added (6 nM). Plates were incubated with rocking for 5 h at 4° C. Fluorescence was determined using excitation and emission filters of 485 and 528 nm, respectively. Percent FITC-GDA bound was determined by using the DMSO millipolarization unit (mP) as the 100% bound value and the 0% for FITC-GDA. Kd values were calculated from separate experiments performed in triplicate using GraphPad Prism. |
Affinity data for this assay | |
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