| Assay Method Information | |
| | Inhibition of Coagulation Factor XIa |
| Description: | Reagents:Enzyme: human coagulation factor XIa; manufacturer: Haemtech;Substrate: Boc-Ile-Glu-Gly-Arg-AMC Acetate salt; manufacturer: Bachem;Reaction buffer: 50 mM HEPES, 145 mM NaCl, 5 mM KCl, 0.1% BSA, pH 7.4;Detection Method:The test compounds were dissolved in reaction buffer at different concentrations. 4 μl of coagulation factor XIa and 4 μl of the test compound were added to a 384 well plate, incubated at room temperature for 10 minutes after mixed thoroughly, and then 4 μl of substrate was added to initiate the reaction. For reading fluorescence signal value, enzyme kinetic mode was used. The wavelength of excitation light was selected to be 380 nm, and the wavelength of emission light was selected to be 460 nm. Read once per 30 seconds, and continuously read 20 cycles. Linear regression analysis of signal value-time was performed during the linear reaction period, and the slope was the reaction rate, and the enzyme activity inhibition rate was calculated according to the following formula. |
| Affinity data for this assay | |
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