ect:ECIAI39_1757 K20265 glutamate:GABA antiporter | (GenBank) gadC; glutamate:gamma-aminobutyric acid antiporter ect:ECIAI39_1758 K01580 glutamate decarboxylase [EC:4.1.1.15] | (GenBank) gadB; glutamate decarboxylase B, PLP-dependent