UniProt Summary: 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 acts as an arginine/glutamine exchanger, following an antiport mechanism for amino acid transport, influencing arginine release 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. Involved in the transport of L-arginine in monocytes. Reduces uptake of ornithine in retinal pigment epithelial (RPE) cells. {ECO:0000269|PubMed:10903140, ECO:0000269|PubMed:11311135, ECO:0000269|PubMed:14603368, ECO:0000269|PubMed:15280038, ECO:0000269|PubMed:16785209, ECO:0000269|PubMed:17197568, ECO:0000269|PubMed:17329401, ECO:0000269|PubMed:9829974}.
Pfam DomainsGO Terms
Pfam Domains
AA permease
GO Terms
L-amino acid transmembrane transporter activity
antiporter activity
amino acid transmembrane transporter activity
L-alpha-amino acid transmembrane transport
L-amino acid transport
amino acid transmembrane transport
amino acid transport
carboxylic acid transmembrane transport
organic acid transmembrane transport
basolateral plasma membrane
anion transmembrane transport
carboxylic acid transport
organic acid transport
cellular amino acid metabolic process
leukocyte migration
organic anion transport
anion transport
intracellular membrane-bounded organelle
carboxylic acid metabolic process
ion transmembrane transport
cell migration
oxoacid metabolic process
organic acid metabolic process
cell motility
localization of cell
transmembrane transport
locomotion
ion transport
integral component of plasma membrane
movement of cell or subcellular component
protein-containing complex assembly
small molecule metabolic process
nitrogen compound transport
protein-containing complex subunit organization
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)