uridine(54) in tRNA + S-adenosyl-L-methionine = 5-methyluridine(54) in tRNA + S-adenosyl-L-homocysteine + H(+)
uridine(54) in trna + s-adenosyl-l-methionine = 5-methyluridine(54) in trna + s-adenosyl-l-homocysteine + h(+)
"tRNA(uracil-54,C(5))-methyltransferase"
"trna(uracil-54,c(5))-methyltransferase"