Predicted to enable L-amino acid transmembrane transporter activity; amino acid:sodium symporter activity; and neurotransmitter:sodium symporter activity. Predicted to be involved in glycine import across plasma membrane; neurotransmitter transport; and sodium ion transmembrane transport. Predicted to be located in membrane. Predicted to be active in plasma membrane. Is expressed in several structures, including CNS glial cell; adult head; embryonic central brain neurons; embryonic head sensory system; and ganglia. Human ortholog(s) of this gene implicated in Hartnup disease and autosomal recessive intellectual developmental disorder 48. Orthologous to several human genes including SLC6A15 (solute carrier family 6 member 15) and SLC6A17 (solute carrier family 6 member 17).