The Enzyme Database

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Accepted name: 23S rRNA (guanine745-N1)-methyltransferase
Reaction: S-adenosyl-L-methionine + guanine745 in 23S rRNA = S-adenosyl-L-homocysteine + N1-methylguanine745 in 23S rRNA
Other name(s): Rlma(I); Rlma1; 23S rRNA m1G745 methyltransferase; YebH; RlmAI methyltransferase; ribosomal RNA(m1G)-methylase (ambiguous); rRNA(m1G)methylase (ambiguous); RrmA (ambiguous); 23S rRNA:m1G745 methyltransferase
Systematic name: S-adenosyl-L-methionine:23S rRNA (guanine745-N1)-methyltransferase
Comments: The enzyme specifically methylates guanine745 at N1 in 23S rRNA.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Liu, M., Novotny, G.W. and Douthwaite, S. Methylation of 23S rRNA nucleotide G745 is a secondary function of the RlmAI methyltransferase. RNA 10 (2004) 1713–1720. [PMID: 15388872]
2.  Gustafsson, C. and Persson, B.C. Identification of the rrmA gene encoding the 23S rRNA m1G745 methyltransferase in Escherichia coli and characterization of an m1G745-deficient mutant. J. Bacteriol. 180 (1998) 359–365. [PMID: 9440525]
3.  Das, K., Acton, T., Chiang, Y., Shih, L., Arnold, E. and Montelione, G.T. Crystal structure of RlmAI: implications for understanding the 23S rRNA G745/G748-methylation at the macrolide antibiotic-binding site. Proc. Natl. Acad. Sci. USA 101 (2004) 4041–4046. [PMID: 14999102]
4.  Hansen, L.H., Kirpekar, F. and Douthwaite, S. Recognition of nucleotide G745 in 23 S ribosomal RNA by the rrmA methyltransferase. J. Mol. Biol. 310 (2001) 1001–1010. [PMID: 11501991]
5.  Liu, M. and Douthwaite, S. Methylation at nucleotide G745 or G748 in 23S rRNA distinguishes Gram-negative from Gram-positive bacteria. Mol. Microbiol. 44 (2002) 195–204. [PMID: 11967079]
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