Snake venom zinc metalloproteinase that inhibits ADP-induced platelet aggregation (probably by binding integrin alpha-IIb/beta-3 (ITGA2B/ITGB3)) and degrades fibrinogen. Binds 1 zinc ion per subunit. Monomer. Expressed by the venom gland. Belongs to the venom metalloproteinase (M12B) family. P-II subfamily. P-IIb sub-subfamily. Asn-18 is present instead of the conserved His which is expected to be zinc-binding residue. There is therefore some uncertainty concerning the enzymatic activity of this protein.