Solution Information | help | |
Enzyme: | Coagulation factor XII | |
inhibitor: | BDBM33581 | |
substrate: | n/a | |
Solution Type: | Aqueous | |
pH at Preparation: | n/a | |
Temp. Prep.: | n/a | |
Comments: | Materials Human plasma factor XIIa alpha was purchased from Enzyme Research Laboratories (Cat # HFXIIa 1212a). Substrate Boc-Gln-Gly-Arg-AMC was from Bachem (Cat #I-1595.0050). Assay buffer consisted of 50 mM Tris, pH 7.4, 150 mM sodium chloride, 0.02% Tween 20. Low-volume 384-well black plates were from Corning (Item #3676). Assay Factor XIIa alpha (3.5 ug/mL) was incubated with Boc-Gln-Gly-Arg-AMC substrate (15 uM) in 10 uL of assay buffer (see above) for 2 hr at room temperature. HTS was performed using 50 uM compound mixture (5 uM each of 10 compounds). IC50 protocol 1.Serial dilute single compounds at 50x concentration in DMSO (16 two-fold dilutions from 2.5 mM to 75 nM) 2.Fill low-volume plate with 4 uL water using Multidrop-micro 3.Add 5 uL assay buffer to columns 1 and 23 using Multidrop-384 4.Add 200 nL of compound (in DMSO from step 1) using Evolution pintool 5.Add 1 uL of Boc-Gln-Gly-Arg-AMC substrate (150 uM in 5x assay buffer) using Multidrop-micro 6.Add 5 uL enzyme | |
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