Sodium-dependent, high-affinity amino acid transporter that mediates the uptake of L-glutamate and also L-aspartate and D-aspartate (PubMed:14506254, PubMed:15265858, PubMed:26690923, PubMed:7521911). Functions as a symporter that transports one amino acid molecule together with two or three Na(+) ions and one proton, in parallel with the counter-transport of one K(+) ion (PubMed:14506254). Mediates Cl(-) flux that is not coupled to amino acid transport; this avoids the accumulation of negative charges due to aspartate and Na(+) symport (PubMed:14506254). Essential for the rapid removal of released glutamate from the synaptic cleft, and for terminating the postsynaptic action of glutamate (By similarity). {ECO:0000250|UniProtKB:P43006, ECO:0000269|PubMed:15265858, ECO:0000269|PubMed:26690923, ECO:0000269|PubMed:7521911}. This is the function of SLC1A2 (solute carrier family 1 member 2, Ensembl gene identifier ENSG00000110436).