Zinc metalloprotease that exhibits a weak hemorrhagic activity (with a minimum hemorrhagic dose of 20 ug by intradermal and intramuscular injection into mice). The basal membrane components collagen (all chains of type IV) (COL4A4), laminin and nidogen are all degraded by this toxin (PubMed:23385358). Rapidly degrades the Aalpha-chain (FGA) of fibrinogen, and later on, degrades the Bbeta-chain (FGB) of fibrinogen (PubMed:7778126). Also activates the complement system, and induces rat neutrophil chemotaxis (PubMed:11200361). Induces edema in mouse food pad and shows a mild myotoxicity (PubMed:7778126). Binds 1 zinc ion per subunit. Inhibited by EDTA, partially inhibited by o-phenantropine, and not inhibited by PMSF, pepstatin A, and aprotinin. Optimum pH is 8.0. Monomer. Expressed by the venom gland. Does not degrade the gamma-chain (FGG) of fibrinogen. Lacks coagulant and defibrinating activities. Belongs to the venom metalloproteinase (M12B) family. P-I subfamily.