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:11368308). Shows activity on L-Leu (PubMed:11368308). Exhibits diverse biological activities, such as hemolysis, edema, apoptosis, as well as induction of platelet aggregation (PubMed:11368308). Effects of snake L-amino oxidases on platelets are controversial, since they either induce aggregation or inhibit agonist-induced aggregation (By similarity). These different effects are probably due to different experimental conditions. Unlike other snake venom L-amino acid oxidases, does not induce hemorrhage (PubMed:11368308). This protein may also have antibacterial and antiparasitic activities (By similarity). an L-alpha-amino acid + H2O + O2 = a 2-oxocarboxylate + H2O2 + NH4(+) H2O + L-leucine + O2 = 4-methyl-2-oxopentanoate + H2O2 + NH4(+) Homodimer; non-covalently linked. Expressed by the venom gland. Contains 2 disulfide bonds. N-glycosylated. Belongs to the flavin monoamine oxidase family. FIG1 subfamily.