Y+L amino acid transporter 2 (SLC7A6)

Involved in the sodium-independent uptake of dibasic amino acids and sodium-dependent uptake of some neutral amino acids. Requires coexpression with SLC3A2/4F2hc to mediate the uptake of arginine, leucine and glutamine.

Also functions as an arginine/glutamine exchanger, after an antiport mechanism for amino acid transport, influencing arginine discharge in exchange for extracellular amino acids. Plays a role in nitric oxide synthesis in human umbilical vein endothelial cells (HUVECs) via transport of L-arginine.