Predicted to enable L-cystine transmembrane transporter activity and neutral amino acid transmembrane transporter activity. Predicted to be involved in L-cystine transport and amino acid transmembrane transport. Located in brush border membrane. Is expressed in several structures, including metanephros and midgut. Used to study cystinuria. Human ortholog(s) of this gene implicated in cystinuria. Orthologous to human SLC7A9 (solute carrier family 7 member 9). [provided by Alliance of Genome Resources, Apr 2022]