TFPI2 Protein (C-His, Human)

Measured by its ability to inhibit trypsin cleavage of a fluorogenic peptide substrate, Mca-RPKPVE-Nval-WRK (Dnp) -NH2 (Anaspec, Catalog#27114) . The IC50 value is < 2 nM, as measured in 100μL reaction mixture containing 1.25 ng trypsin (Sigma, Catalog#T4799), 10 μM substrate, 50 mM Tris, 10 mM CaCl2, 0.15M NaCl , 0.05% Brij-35, pH 7.5.

The secreted recombinant humanTFPI2 comprises 202 amino acids and predicts a molecular mass of 23.2 kDa. It migrates as an approximately 32-34 kDa band in SDS-PAGE under reducing conditions.