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. Inhibited by diisopropylfluorophosphate (DFP) and PMSF, and partially by soybean trypsin inhibitor, but not by EDTA. Monomer. Expressed by the venom gland. Glycosylated. Contains 8.5% of hexoses, 5.8% of hexosamines and 0.8% of sialic acids. Lacks esterolytic activity. Belongs to the peptidase S1 family. Snake venom subfamily.