Inhibits the growth of both Gram-negative and Gram-positive bacteria. Displays strong antibacterial activity towards V.cholerae and E.tarda. Causes deformation of the surface of S.aureus and the formation of pores on the surface of E.coli. Strong antiparasitic activity is seen towards C.irritans, T.brucei and I.multifiliis. Cilia of treated theronts are lost and the macronucleus swells, inducing cell membrane rupture and efflux of the cytoplasm. an L-alpha-amino acid + H2O + O2 = a 2-oxocarboxylate + H2O2 + NH4(+) Homodimer. Expression mainly observed in plasma, spleen, kidney and gills with low levels detected in blood and no expression detected in brain, liver, heart, muscle or intestine (at protein level). Belongs to the flavin monoamine oxidase family. FIG1 subfamily.