Enables arylamine N-acetyltransferase activity. Involved in aging; liver development; and response to thyroxine. Located in cytosol. Human ortholog(s) of this gene implicated in carcinoma (multiple); contact dermatitis (multiple); pancreatic cancer; and prostate cancer. Orthologous to human NAT1 (N-acetyltransferase 1). [provided by Alliance of Genome Resources, Apr 2022]