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:19393676). Is highly active against L-Tyr, L-Asp, L-Phe, L-Glu, L-Trp, L-His, L-Gln, L-Ile, L-Met, L-Leu and moderately active against L-Lys, L-Arg, L-Ala and L-Asn (PubMed:19393676). Exhibits diverse biological activities, such as edema, inflammatory cell infiltration, cytotoxicity and apoptosis, as well as induction of platelet aggregation (PubMed:19393676). 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 induce hemorrhage, hemolysis, and have antibacterial and antiparasitic activities. 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-tryptophan + O2 = H2O2 + indole-3-pyruvate + NH4(+) H2O + L-methionine + O2 = 4-methylsulfanyl-2-oxobutanoate + H2O2 + NH4(+) H2O + L-isoleucine + O2 = (S)-3-methyl-2-oxopentanoate + H2O2 + NH4(+) H2O + L-arginine + O2 = 5-guanidino-2-oxopentanoate + H2O2 + NH4(+) H2O + L-aspartate + O2 = H2O2 + NH4(+) + oxaloacetate H2O + L-histidine + O2 = 3-(imidazol-5-yl)pyruvate + H2O2 + NH4(+) H2O + L-asparagine + O2 = 2-oxosuccinamate + H2O2 + NH4(+) H2O + L-tyrosine + O2 = 3-(4-hydroxyphenyl)pyruvate + H2O2 + NH4(+) H2O + L-glutamine + O2 = 2-oxoglutaramate + H2O2 + NH4(+) H2O + L-alanine + O2 = H2O2 + NH4(+) + pyruvate H2O + L-lysine + O2 = 6-amino-2-oxohexanoate + H2O2 + NH4(+) H2O + L-glutamate + O2 = 2-oxoglutarate + H2O2 + NH4(+) Monomer. This is in contrast with most of its orthologs, that are non-covalently linked homodimers. Expressed by the venom gland. N-glycosylated. Belongs to the flavin monoamine oxidase family. FIG1 subfamily.