Large neutral amino acids transporter small subunit 3 (SLC43A1)

Sodium-independent, higher affinity transport of large neutral amino acids. Has narrower substrate selectivity compared to SLC7A5 and SLC7A8 and mainly transports branched-chain amino acids and phenylalanine.

Plays a role in the development of human prostate cancer, from prostatic intraepithelial neoplasia to invasive prostate cancer. .