label: 5-methylcytidine(34) in mitochondrial tRNA + S-adenosyl-L-homocysteine + H(+) => cytidine(34) in mitochondrial tRNA + S-adenosyl-L-methionine
label_lc: 5-methylcytidine(34) in mitochondrial trna + s-adenosyl-l-homocysteine + h(+) => cytidine(34) in mitochondrial trna + s-adenosyl-l-methionine