preferred_name: a uridine in 21S rRNA + S-adenosyl-L-methionine = a 2'-O-methyluridine in 21S rRNA + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: a uridine in 21s rrna + s-adenosyl-l-methionine = a 2'-o-methyluridine in 21s rrna + s-adenosyl-l-homocysteine + h(+)
label: a uridine in 21S rRNA + S-adenosyl-L-methionine = a 2'-O-methyluridine in 21S rRNA + S-adenosyl-L-homocysteine + H(+)
label_lc: a uridine in 21s rrna + s-adenosyl-l-methionine = a 2'-o-methyluridine in 21s rrna + s-adenosyl-l-homocysteine + h(+)