2'-O-methylcytidine(34) in tRNA + S-adenosyl-L-homocysteine + H(+) => cytidine(34) in tRNA + S-adenosyl-L-methionine
2'-o-methylcytidine(34) in trna + s-adenosyl-l-homocysteine + h(+) => cytidine(34) in trna + s-adenosyl-l-methionine