gamma-L-glutamyl-L-cysteinyl-beta-alanine + ADP + phosphate + H(+) => gamma-L-glutamyl-L-cysteine + beta-alanine + ATP
gamma-l-glutamyl-l-cysteinyl-beta-alanine + adp + phosphate + h(+) => gamma-l-glutamyl-l-cysteine + beta-alanine + atp