The Enzyme Database

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Accepted name: tRNA (uracil54-C5)-methyltransferase
Reaction: S-adenosyl-L-methionine + uracil54 in tRNA = S-adenosyl-L-homocysteine + 5-methyluracil54 in tRNA
Other name(s): transfer RNA uracil54 5-methyltransferase; transfer RNA uracil54 methylase; tRNA uracil54 5-methyltransferase; m5U54-methyltransferase; tRNA:m5U54-methyltransferase; RUMT; TrmA; 5-methyluridine54 tRNA methyltransferase; tRNA(uracil-54,C5)-methyltransferase; Trm2; tRNA(m5U54)methyltransferase
Systematic name: S-adenosyl-L-methionine:tRNA (uracil54-C5)-methyltransferase
Comments: Unlike this enzyme, EC (methylenetetrahydrofolate—tRNA-(uracil54-C5)-methyltransferase (FADH2-oxidizing)), uses 5,10-methylenetetrahydrofolate and FADH2 to supply the atoms for methylation of U54 [4].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 37257-02-6
1.  Björk, G.R. and Svensson, I. Studies on microbial RNA. Fractionation of tRNA methylases from Saccharomyces cerevisiae. Eur. J. Biochem. 9 (1969) 207–215. [PMID: 4896260]
2.  Greenberg, R. and Dudock, B. Isolation and characterization of m5U-methyltransferase from Escherichia coli. J. Biol. Chem. 255 (1980) 8296–8302. [PMID: 6997293]
3.  Hurwitz, J., Gold, M. and Anders, M. The enzymatic methylation of ribonucleic acid and deoxyribonucleic acid. 3. Purification of soluble ribonucleic acid-methylating enzymes. J. Biol. Chem. 239 (1964) 3462–3473. [PMID: 14245404]
4.  Delk, A.S., Nagle, D.P., Jr. and Rabinowitz, J.C. Methylenetetrahydrofolate-dependent biosynthesis of ribothymidine in transfer RNA of Streptococcus faecalis. Evidence for reduction of the 1-carbon unit by FADH2. J. Biol. Chem. 255 (1980) 4387–4390. [PMID: 6768721]
5.  Kealey, J.T., Gu, X. and Santi, D.V. Enzymatic mechanism of tRNA (m5U54)methyltransferase. Biochimie 76 (1994) 1133–1142. [PMID: 7748948]
6.  Gu, X., Ivanetich, K.M. and Santi, D.V. Recognition of the T-arm of tRNA by tRNA (m5U54)-methyltransferase is not sequence specific. Biochemistry 35 (1996) 11652–11659. [PMID: 8794745]
7.  Becker, H.F., Motorin, Y., Sissler, M., Florentz, C. and Grosjean, H. Major identity determinants for enzymatic formation of ribothymidine and pseudouridine in the TΨ-loop of yeast tRNAs. J. Mol. Biol. 274 (1997) 505–518. [PMID: 9417931]
8.  Walbott, H., Leulliot, N., Grosjean, H. and Golinelli-Pimpaneau, B. The crystal structure of Pyrococcus abyssi tRNA (uracil-54, C5)-methyltransferase provides insights into its tRNA specificity. Nucleic Acids Res. 36 (2008) 4929–4940. [PMID: 18653523]
[EC created 1972, modified 2011]

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