label: diphthine-[translation elongation factor 2] + NH4(+) + ATP => diphthamide-[translation elongation factor 2] + AMP + diphosphate + H(+)
label_lc: diphthine-[translation elongation factor 2] + nh4(+) + atp => diphthamide-[translation elongation factor 2] + amp + diphosphate + h(+)