Target: |
SLC7A5 is a sodium-independent, high-affinity transport of large neutral amino acids such as phenylalanine, tyrosine, leucine, arginine and tryptophan, when associated with SLC3A2/4F2hc. SLC7A5 is involved in cellular amino acid uptake. SLC7A5 acts as an amino acid exchanger. SLC7A5 is involved in the transport of L-DOPA across the blood-brain barrier, and that of thyroid hormones triiodothyronine (T3) and thyroxine (T4) across the cell membrane in tissues such as placenta. SLC7A5 plays a role in neuronal cell proliferation (neurogenesis) in brain. SLC7A5 is involved in the uptake of methylmercury (MeHg) when administered as the L-cysteine or D,L-homocysteine complexes, and hence plays a role in metal ion homeostasis and toxicity. SLC7A5 is involved in the cellular activity of small molecular weight nitrosothiols, via the stereoselective transport of L-nitrosocysteine (L-CNSO) across the transmembrane. SLC7A5 may play an important role in high-grade gliomas. SLC7A5 mediates blood-to-retina L-leucine transport across the inner blood-retinal barrier which in turn may play a key role in maintaining large neutral amino acids as well as neurotransmitters in the neural retina. SLC7A5 acts as the major transporter of tyrosine in fibroblasts. |