Enables aminopeptidase activity. Acts upstream of or within positive regulation of angiogenesis and proteolysis. Located in cytoplasm. Is expressed in several structures, including alimentary system; brain; genitourinary system; immune system; and respiratory system. Human ortholog(s) of this gene implicated in cervix carcinoma. Orthologous to human ERAP1 (endoplasmic reticulum aminopeptidase 1). [provided by Alliance of Genome Resources, Apr 2022]