5-methylcytidine(72) in tRNA(Thr) + S-adenosyl-L-homocysteine + H(+) => cytidine(72) in tRNA(Thr) + S-adenosyl-L-methionine
5-methylcytidine(72) in trna(thr) + s-adenosyl-l-homocysteine + h(+) => cytidine(72) in trna(thr) + s-adenosyl-l-methionine