Uniporter that mediates the uptake of cationic L-amino acids such as L-arginine, L-lysine and L-ornithine . The transport is sodium ions- and pH-independent, moderately trans-stimulated and is mediated by passive diffusion .
Subcellular locations: Cell membrane
Highly expressed in thymus, uterus and testis . Detected at lower levels in brain, mammary gland, prostate, salivary gland and fetal spleen . In brain, highest expression in thalamus, hippocampus and amygdala .