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Functions as a sodium-dependent amino acid transporter. Mediates the saturable, pH-sensitive and electrogenic cotransport of glutamine and sodium ions with a stoichiometry of 1:1. May also transport small zwitterionic and aliphatic amino acids with a lower affinity. May supply glutamatergic and GABAergic neurons with glutamine which is required for the synthesis of the neurotransmitters glutamate and GABA.
Gene References into Functions
High SNAT1 expression is associated with increased cell migration in breast neoplasms. PMID: 27048259
this study indicates that inhibition of miRNA-593-3p by insulin promotes glucose metabolism through the regulation of Slc38a1 and CLIP3 expression, and provides a new insight into the role and mechanism of insulin-induced glycolysis. PMID: 27613819
Results found that SLC38A1 was up-regulated in colorectal cancer cells (CRC) and significantly associated with tumor invasion and advanced disease stage. Its overexpression enhanced growth and migration of HCT116 cells providing evidence that activation of SLC38A1 may play a critical role in CRC development and progression. PMID: 28224429
The SLC38A1 protein was very low or undetectable in healthy gastric mucosa but strong staining of SLC38A1 protein was found in the cytoplasm in more than half of gastric cancer samples. SLC38A1 knockdown decreased tumor cell proliferation and migration. PMID: 24712400
The cross-talk between Akt signaling and SNAT1 might play a critical role in the development and progression of breast cancer PMID: 23848995
Increased expression of ATA1 is frequent in human hilar cholangiocarcinoma and significantly correlated with the progression of cholangiocarcinoma, suggesting the importance of ATA1 in cancer development and progression. PMID: 20605601
The results of this study provided that RAB2A and SLC38A1, were associated with the density of calbindin-positive neurons and the number of perineuronal oligodendrocytes in psychiatric disorders. PMID: 20308991
results suggest that slc38a1 may play a role in the mechanisms underlying the determination of cellular viability in astrocytes through modulation of intracellular ROS generation PMID: 21219957
SNAT1 is a key contributor to system A activity at term. PMID: 20599747
Theses data demonstrate the physiological importance of ATA1 in hepatocarcinogenesis. PMID: 17549407
Report SNAT1 activity in fetal T lymphocytes in intrauterine growth restriction and with tumor necrosis factor-alpha treatment. PMID: 18703994
A possible association between low expression of SNAT1 and suicidal behavior is suggested. PMID: 19442705
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Subcellular Location
Cell membrane; Multi-pass membrane protein.
Protein Families
Amino acid/polyamine transporter 2 family
Tissue Specificity
Expressed in the cerebral cortex by pyramidal and GABAergic neurons, astrocytes and other non-neuronal cells (at protein level). Expressed in placenta, heart, lung, skeletal muscle, spleen, stomach and testis.