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