| Assay Method Information | |
| | CRBN Fluorescence Polarization Assay |
| Description: | In this competitive fluorescent polarization assay Cy5 conjugated lenalidomide analog (Cy5-O-Len)13 was used as a fluorescent probe. 6×His-CRBN-DDB1 protein (200 nM) and Cy5-O-Len probe (30 nM) were combined in 20 mM HEPES pH 7, 150 mM NaCl, 0.005% Tween-20 assay buffer. 20 μL of this assay cocktail was dispensed into wells of Corning 3821 black 384-well plates. Compounds were transferred to the assay plate from a dose-response plate using a Pintool on a Biomek FXP Laboratory Automation Workstation (Beckman Coulter). The plates were incubated in the dark for 1 hour at room temperature and then read on an Envision plate reader (PerkinElmer, Massachusetts, USA). IC50 values were determined using a proprietary software RISE (Robust Investigation of Screening Experiments), developed in house on the Pipeline Pilot platform (Biovia, v. 17.2.0). Data represent the mean of three independent determinations. |
| Affinity data for this assay | |
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