Predicted to enable L-amino-acid oxidase activity and polyamine oxidase activity. Predicted to be involved in aromatic amino acid family catabolic process; negative regulation of T cell mediated immune response to tumor cell; and regulation of T cell activation. Predicted to be located in several cellular components, including acrosomal vesicle; immunological synapse; and sperm midpiece. Orthologous to human IL4I1 (interleukin 4 induced 1). [provided by Alliance of Genome Resources, Apr 2022]