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 (By similarity). This enyzme shows activity on L-Leu (PubMed:29024770). This enzyme inhibits platelet aggregation in human platelet rich plasma induced by ADP (IC(50)=3.2 mg/mL), and shows antibacterial activities on both Gram-positive and Gram-negative bacteria (P.aeruginosa, V.cholerae, S.aureus, E.faecalis and E.coli) (PubMed:29024770). These two effects are due to hydrogen peroxide, since they are inhibited by catalase (PubMed:29024770). It also induces edema in mouse paw pads but does not show hemolytic activity (PubMed:29024770). This protein may also have activities in hemorrhage, and apoptosis (By similarity). an L-alpha-amino acid + H2O + O2 = a 2-oxocarboxylate + H2O2 + NH4(+) H2O + L-leucine + O2 = 4-methyl-2-oxopentanoate + H2O2 + NH4(+) Strongly inhibited by glutathione, and moderately inhibited by PMSF, acetate iodine and glutamic acid. Is also inhibited by Zn(2+) ions, but not by Ca(2+), Mg(2+) and Mn(2+). Optimum pH is 7.0-10.0. Optimum temperature is 35-45 degrees Celsius. Homodimer; non-covalently linked. Expressed by the venom gland. N-glycosylated. Contains 18.73% carbohydrates. Belongs to the flavin monoamine oxidase family. FIG1 subfamily.