label: acetyl-AMP + cytidine(34) in elongator tRNA(Met) <=> N(4)-acetylcytidine(34) in elongator tRNA(Met) + AMP + H(+)
label_lc: acetyl-amp + cytidine(34) in elongator trna(met) <=> n(4)-acetylcytidine(34) in elongator trna(met) + amp + h(+)