Enables amino acid transmembrane transporter activity. Acts upstream of or within neutral amino acid transport and proton transmembrane transport. Located in plasma membrane. Is expressed in several structures, including ear; face; heart; nervous system; and skeleton. Human ortholog(s) of this gene implicated in iminoglycinuria. Orthologous to human SLC36A2 (solute carrier family 36 member 2). [provided by Alliance of Genome Resources, Apr 2022]