Enables L-amino acid transmembrane transporter activity. Involved in regulation of macrophage activation. Acts upstream of or within several processes, including L-alpha-amino acid transmembrane transport; nitric oxide biosynthetic process; and nitric oxide production involved in inflammatory response. Is integral component of membrane. Is expressed in several structures, including alimentary system; bone; brain; genitourinary system; and respiratory system. Orthologous to human SLC7A2 (solute carrier family 7 member 2). [provided by Alliance of Genome Resources, Apr 2022]