| Assay Method Information | |
| | Enzymatic Assay |
| Description: | Compound activity was determined in an in vitro enzymatic assay using untagged, full-length human PTPN2 (TC45) (1-387) protein. PTPN2 was produced in E. coli as a GST-TEV fusion and the GST was removed by TEV digestion, followed by additional purification to yield full-length PTPN2 (SEQ ID 1). PTPN2 enzyme was diluted in assay buffer (50 mM HEPES pH7.5, 0.2 mM EDTA, 1 mM DTT, 0.02% Brij-35, 0.02% BSA) to a final concentration of 0.5 nM and added to black 384-well non-binding plates (Greiner, 781900). Compounds were subsequently added using a Tecan D300e dispenser. Following a 10 min incubation at room temperature, DiFMUP substrate (ThermoFisher, D22065) was added to a final concentration of 100 μM. Plates were transferred to a SpectraMax plate reader (Molecular Devices) and fluorescence intensity was measured (ex 358, em 455) after a 30 min incubation at room temperature. Each plate included a 100% inhibition control (no enzyme) and a 0% inhibition control (DMSO) from which % inhibition for test compounds was calculated. |
| Affinity data for this assay | |
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