| Assay Method Information | |
| | Biochemical Assay |
| Description: | The assay is based on the use of a probe of formula (IP) that binds to the NAD binding pocket and takes advantage of the significant change in the polarization signal observed upon binding of the probe to PARP-1, -2 and -3.The probe of formula (IP) was tested for its ability to bind FL PARP-1, -2 and -3 in a titration experiment. The assay performances were then evaluated (Z factor) as well as the displacement of the probe by its scaffold and known commercially available PARP inhibitors. In all of the experiments, the polarization signal was measured using a Saphire2 plate reader (Tecan). Data analysis was performed using Dynafit software. In particular, titration data were fitted to the following equilibria: Enzyme+probe <==> Complex Enzyme-probe, while displacement data were fitted to the following equilibria: Enzyme+probe <==> Complex Enzyme-probe, Enzyme+Compound <==> Complex Enzyme-Compound, whereby binding of probe and compound on the enzyme are mutually exclusive. |
| Affinity data for this assay | |
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