| Assay Method Information | |
| | Evaluation of Inhibitory Activity Against 3CL Protease of 2019 Novel Coronavirus |
| Description: | To determine the inhibitory activity of the compound against 3CL protease of 2019 novel coronavirus (2019-nCOV 3CLpro): the enzyme level inhibitory activity of inhibitors against 3CL protease was determined by fluorescence resonance energy transfer (FRET) technology. In a 96-well plate, 27.5 uL of buffer (20mM Tris, 100 mM NaCL, 1 mM EDTA, pH 7.4) was added to each well, 2.5 uL compounds (final concentrations were 2 uM, 4 uM, 6 uM, 8 uM, 10 uM, 12 uM, 14 uM, 16 uM, 18 uM, 20 uM, respectively) and 5 uL fluorescent substrate diluted with buffer (final concentration was 20 uM) was added. The fluorescence parameters were determined by Ge n5 fluorescence spectrophotometer. The excitation wavelength and emission wavelength were 340 nm and 490 nm respectively, kept at 37C., and the data were read after 10 min. A negative control was used, in which no compound was added to the control, and the rest was the same. The obtained data was processed by software GraphPad Prism 5. |
| Affinity data for this assay | |
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