Snake venom zinc metalloprotease that hydrolyzes the Aalpha-chain and more slowly the Bbeta-chain of fibrin and fibrinogen. Also hydrolyzes casein and B-chain of oxidized insulin. Its fibrinolytic activity is direct, without any plasminogen activation. Inhibits ADP-induced and collagen-induced platelet aggregation. Shows low hemorrhagic activity. Cleaves the plasma proteinase inhibitors alpha(2)-macroglobulin (A2M) and alpha(2)M-related pregnancy zone protein (PZP), and is inhibited by them (By similarity). Binds 1 zinc ion per subunit. Fibrinolytic and caseinolytic activities are inhibited by Cd(2+), Cu(2+) and Co(2+) ions. Not inhibited by Mg(2+), Ca(2+) and Ba(2+). Also inhibited by EDTA, EGTA and 1,10-phenanthroline (By similarity). Monomer. Expressed by the venom gland. Belongs to the venom metalloproteinase (M12B) family. P-I subfamily.