| Assay Method Information | |
| | Time Resolved Fluorescence Resonance Energy Transfer (TR-FRET) Assay |
| Description: | The binding of compounds to bromodomain BRD4 (44-168), BRD4 (333-460), and BRD4 (1-477 or 44-460) was assessed using a time resolved fluorescent resonance energy transfer binding assay (1), that measures the binding of a fluorescently labeled probe molecule to the bromodomain protein. The bromodomain protein, fluorescent probe molecule (either a biotinylated histone peptide or a fluorescently labeled small molecule), and dose-responsed test compound are incubated together to reach thermodynamic equilibrium. In the absence of a test compound, the bromodomain and small molecule are bound, resulting in a high fluorescent signal. In the presence of a sufficient concentration of inhibitor, this intercation is disrupted resulting in a loss of fluorescent resonance energy transfer. |
| Affinity data for this assay | |
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