Degrades alpha chain of fibrinogen (FGA), and has strong caseinolytic activity. Cleaves oxidized insulin B-chain at '40-Tyr-|-Leu-41', '48-Phe-|-Phe-49' and '49-Phe-|-Tyr-50', and glucagon at the bonds '62-Tyr-|-Ser-63', 66-Leu-|-Asp-67' and '78-Leu-|-Met-79' bonds. Monomer. Expressed by the venom gland. Belongs to the peptidase S1 family. Snake venom subfamily.