Predicted to enable gamma-aminobutyric acid:proton symporter activity and glycine transmembrane transporter activity. Involved in several processes, including gamma-aminobutyric acid transport; hippocampus development; and neurotransmitter loading into synaptic vesicle. Located in inhibitory synapse and synaptic vesicle. Is active in GABA-ergic synapse. Is integral component of synaptic vesicle membrane. Orthologous to human SLC32A1 (solute carrier family 32 member 1). [provided by Alliance of Genome Resources, Apr 2022]