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- Table of Contents
Facts about Large neutral amino acids transporter small subunit 1.
Acts as an amino acid exchanger. Involved in the transport of L-DOPA throughout the blood- brain barrier, and that of thyroid hormones triiodothyronine (T3) and thyroxine (T4) across the cell membrane in cells like placenta.
Human | |
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Gene Name: | SLC7A5 |
Uniprot: | Q01650 |
Entrez: | 8140 |
Belongs to: |
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amino acid-polyamine-organocation (APC) superfamily |
4F2 LC; 4F2LC; CD98; CD98lc; D16S469EL-type amino acid transporter 1; E16; Integral membrane protein E16; large neutral amino acids transporter 1; large neutral amino acids transporter small subunit 1; LAT1; LAT1hLAT1; MPE16; MPE16CD98 light chain; SLC7A5; sodium-independent neutral amino acid transporter LAT1,4F2LC; solute carrier family 7 (cationic amino acid transporter, y+ system), member 5,4F2 light chain; Solute carrier family 7 member 5; TA1; y+ system cationic amino acid transporter
Mass (kDA):
55.01 kDA
Human | |
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Location: | 16q24.2 |
Sequence: | 16; NC_000016.10 (87830022..87869507, complement) |
Expressed abundantly in adult lung, liver, brain, skeletal muscle, placenta, bone marrow, testis, resting lymphocytes and monocytes, and in fetal liver. Weaker expression in thymus, cornea, retina, peripheral leukocytes, spleen, kidney, colon and lymph node. During gestation, expression in the placenta was significantly stronger at full-term than at the mid-trimester stage. Also expressed in all human tumor cell lines tested and in the astrocytic process of primary astrocytic gliomas. Expressed in retinal endothelial cells and in the intestinal epithelial cell line Caco-2.
Apical cell membrane; Multi-pass membrane protein. Cell membrane; Multi-pass membrane protein. Lysosome membrane; Multi-pass membrane protein. Located to the plasma membrane by SLC3A2/4F2hc (PubMed:9751058). Localized to the apical membrane of placental syncytiotrophoblastic cells (PubMed:11742812). Recruited to lysosomes by LAPTM4B (PubMed:25998567). Expressed in both luminal and abluminal membranes of brain capillary endothelial cells (By similarity).
PMID: 9751058 by Mastroberardino L., et al. Amino-acid transport by heterodimers of 4F2hc/CD98 and members of a permease family.
PMID: 10049700 by Prasad P.D., et al. Human LAT1, a subunit of system L amino acid transporter: molecular cloning and transport function.