| Assay Method Information | |
| | In vitro Competitive Displacement Binding Assays |
| Description: | Modified SMAC peptides and compounds were tested for their ability to displace the fluorescent tracer from either XIAP, clAP-1 or clAP-2. BIR3 domains of clAP-1 , clAP-2 and XIAP were incubated with test compounds or SMAC based peptides and their respective peptide probes (Peptide Protein Research) in assay buffer (50mM Hepes pH 7.5, 0.025% Tween-20, 0.01 % BSA, and 1 mM DTT). Positive controls consisted of BIR3 proteins and tracer (no inhibition) and negative controls contained tracer only (100% inhibition). The samples were incubated at room temperature for 1 hr (XIAP and clAP-2) or 3hrs (clAP-1 ) prior to being read in the BMG Pherastar in Fluorescence Polarization mode (FP 485nm, 520nm, 520nm). |
| Affinity data for this assay | |
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