label: uridine(747) in 23S rRNA + S-adenosyl-L-methionine = 5-methyluridine(747) in 23S rRNA + S-adenosyl-L-homocysteine + H(+)
label_lc: uridine(747) in 23s rrna + s-adenosyl-l-methionine = 5-methyluridine(747) in 23s rrna + s-adenosyl-l-homocysteine + h(+)