label: cytidine(967) in 16S rRNA + S-adenosyl-L-methionine => 5-methylcytidine(967) in 16S rRNA + S-adenosyl-L-homocysteine + H(+)
label_lc: cytidine(967) in 16s rrna + s-adenosyl-l-methionine => 5-methylcytidine(967) in 16s rrna + s-adenosyl-l-homocysteine + h(+)