枯草杆菌蛋白酶/Kex2p样前蛋白转化酶抑制剂,Furin inhibitor I is a selective, irreversible, and cell-permeable competitive inhibitor of proprotein convertases, including furin/SPC1 (Ki = ~1 nM), SPC2/PC2 (Ki = 0.36 nM), SPC3/PC1/PC3 (Ki = 2.0 nM), SPC4/PACE4 (Ki = 3.6 nM), S