Enables L-glutamate transmembrane transporter activity. Acts upstream of or within L-glutamate transmembrane transport. Located in plasma membrane. Is integral component of presynaptic membrane. Is active in glutamatergic synapse. Is integral component of postsynaptic membrane. Is expressed in several structures, including cerebellum; mesenchyme of metanephros; and retina nuclear layer. Orthologous to human SLC1A7 (solute carrier family 1 member 7). [provided by Alliance of Genome Resources, Apr 2022]