Thrombin-like snake venom serine protease. Releases both fibrinopeptides A and B from fibrinogen (FGA and FGB) to form fibrin clots. Strongly inactivated by diisopropylfluorophosphate (DFP) and to a lesser extent by tosyl-L-lysine chloromethyl ketone (TLCK). Optimum pH is 8.0. Monomer. Expressed by the venom gland. Glycosylated. Belongs to the peptidase S1 family. Snake venom subfamily.