dicarboxylic acid transmembrane transporter activity gamma-aminobutyric acid transmembrane transporter activity antiporter activity secondary active monocarboxylate transmembrane transporter activity glutamate:gamma-aminobutyric acid antiporter activity GO:0070909 glutamate/gamma-aminobutyric acid antiporter activity glutamate-gamma-aminobutyric acid antiporter activity 2009-09-04T03:51:32Z mah Catalysis of the reaction: glutamate(out) + gamma-aminobutyric acid(in) = glutamate(in) + gamma-aminobutyric acid(out). molecular_function glutamate: GABA antiporter activity