Thrombin-like snake venom serine protease. Cleaves fibrinogen (beta chain of fibrinogen (FGB) and more slowly alpha chain (FGA)) without inducing fibrin clotting and cleaves kininogen to produce bradykinin (KNG), resulting in the reduction of blood pressure. Inhibited by diisopropylfluorophosphate (DFP), PMSF and leupeptin. Monomer. Expressed by the venom gland. Does not coagulate human plasma. Does not inhibit platelet aggregation induced by ADP or collagen (PubMed:9546675). Belongs to the peptidase S1 family. Snake venom subfamily.