Enables arginase activity and nitric-oxide synthase binding activity. Involved in several processes, including arginine catabolic process to ornithine; cellular response to cytokine stimulus; and cellular response to lipid. Located in mitochondrion. Used to study hypertension. Biomarker of acute kidney failure; end stage renal disease; hypertension; and ureteral obstruction. Human ortholog(s) of this gene implicated in asthma. Orthologous to human ARG2 (arginase 2). [provided by Alliance of Genome Resources, Apr 2022]