Catalyzes an oxidative deamination of predominantly hydrophobic and aromatic L-amino acids, thus producing hydrogen peroxide that may contribute to the diverse toxic effects of this enzyme (PubMed:19135502). Is highly active on L-Met, L-Leu, L-Phe and L-Ile (PubMed:19135502). Exhibits diverse biological activities, such as antibacterial on both Gram-positive and Gram-negative bacteria and antiparasitic activities, as well as induction of platelet aggregation (PubMed:19135502). Effects of snake L-amino oxidases on platelets are controversial, since they either induce aggregation or inhibit agonist-induced aggregation. These different effects are probably due to different experimental conditions. This protein may also have activities in hemorrhage, hemolysis, edema, and apoptosis. an L-alpha-amino acid + H2O + O2 = a 2-oxocarboxylate + H2O2 + NH4(+) H2O + L-leucine + O2 = 4-methyl-2-oxopentanoate + H2O2 + NH4(+) H2O + L-phenylalanine + O2 = 3-phenylpyruvate + H2O2 + NH4(+) H2O + L-methionine + O2 = 4-methylsulfanyl-2-oxobutanoate + H2O2 + NH4(+) H2O + L-isoleucine + O2 = (S)-3-methyl-2-oxopentanoate + H2O2 + NH4(+) Homodimer; non-covalently linked. Expressed by the venom gland. N-glycosylated (Probable). The enzymatic activity is not affected by deglycosylation. Has parasiticidal activities against leishmania, as a result of enzyme-catalyzed hydrogen peroxide production. Belongs to the flavin monoamine oxidase family. FIG1 subfamily.