preferred_name: a uridine in 12S rRNA + S-adenosyl-L-methionine => a 5-methyluridine in 12S rRNA + S-adenosyl-L-homocysteine + H(+)
preferred_name_lc: a uridine in 12s rrna + s-adenosyl-l-methionine => a 5-methyluridine in 12s rrna + s-adenosyl-l-homocysteine + h(+)
label: a uridine in 12S rRNA + S-adenosyl-L-methionine => a 5-methyluridine in 12S rRNA + S-adenosyl-L-homocysteine + H(+)
label_lc: a uridine in 12s rrna + s-adenosyl-l-methionine => a 5-methyluridine in 12s rrna + s-adenosyl-l-homocysteine + h(+)