Required for glutamatergic synaptic transmission (PubMed:10818169, PubMed:14762140, PubMed:14981253, PubMed:15371514, PubMed:9526004, PubMed:9870947). In AWB and AWC sensory neurons, required for the detection of preferred food sources, probably via glutamatergic neurotransmission from sensory neurons (PubMed:25009271). Negatively regulates the turning step of male mating behavior (PubMed:17611271). Expressed in neurons of the pharynx and the extrapharyngeal nervous system. Highly expressed in male PHC sensory neurons (PubMed:28065609). Highly expressed in male PHC sensory neurons from the late L4 larval stage/young adult stage. Defective preference between different food odors (PubMed:25009271). Abnormal repetitive turning behavior during male mating (PubMed:17611271). Belongs to the major facilitator superfamily. Sodium/anion cotransporter family. VGLUT subfamily.