FunctionFunctions as a sodium-dependent vesicular transporter selective for proline, glycine, leucine and alanine. In contrast to other members of this neurotransmitter transporter family, does not appear to be chloride-dependent.
Involvement in diseaseMental retardation, autosomal recessive 48
Sequence similaritiesBelongs to the sodium:neurotransmitter symporter (SNF) (TC 2.A.22) family. SLC6A17 subfamily.
Cellular localizationCytoplasmic vesicle, secretory vesicle, synaptic vesicle membrane. Localizes at synaptic junctions - at both pre- and post-synaptic sites - particularly in excitatory glutamatergic terminals.