N(3)-methyluridine in 25S rRNA + S-adenosyl-L-homocysteine + H(+) => uridine in 25S rRNA + S-adenosyl-L-methionine
n(3)-methyluridine in 25s rrna + s-adenosyl-l-homocysteine + h(+) => uridine in 25s rrna + s-adenosyl-l-methionine
N(3)-methyluridine in 25S rRNA + S-adenosyl-L-homocysteine + H(+) => uridine in 25S rRNA + S-adenosyl-L-methionine
n(3)-methyluridine in 25s rrna + s-adenosyl-l-homocysteine + h(+) => uridine in 25s rrna + s-adenosyl-l-methionine