Sodium-coupled neutral amino acid transporter 4 (SLC38A4)

Sodium-dependent amino acid transporter. Mediates electrogenic symport of neutral amino acids and sodium ions.

Has a broad specificity, with a taste for Ala, followed by His, Cys, Asn, Ser, Gly, Val, Thr, Gln and Met. May mediate sodium- independent transport of cationic amino acids, such as Arg and Lys.