Enables basic amino acid transmembrane transporter activity. Acts upstream of or within regulation of arginine metabolic process. Predicted to be located in plasma membrane. Predicted to be integral component of membrane. Is expressed in heart; intestine; metanephros; and testis. Human ortholog(s) of this gene implicated in lysinuric protein intolerance. Orthologous to human SLC7A7 (solute carrier family 7 member 7). [provided by Alliance of Genome Resources, Apr 2022]