label: gamma-L-glutamyl-(2S)-2-aminobutanoate + ADP + phosphate + H(+) => (2S)-2-aminobutanoate + L-glutamate + ATP
label_lc: gamma-l-glutamyl-(2s)-2-aminobutanoate + adp + phosphate + h(+) => (2s)-2-aminobutanoate + l-glutamate + atp