Assay Method Information |
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| Human Factor D Assay |
Description: | Human Factor D (purified from human serum, Complement Technology, Inc.) at 80 nM final concentration was incubated with test compound at various concentrations for 5 minutes at room temperature in 50 mM Tris, 1M NaCl, pH 7.5. A synthetic substrate Z-L-Lys-SBzl and DTNB (Ellman's reagent) are added to final concentrations of 100 μM each. Absorbance at 405 nm (A405) was recorded at 30 second intervals for 30 minutes using a microplate spectrophotometer. IC50 values are calculated by nonlinear regression of complement Factor D reaction rates as a function of test compound concentration. |
Affinity data for this assay | |
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