Accepted name: 23S rRNA (adenine2085-N6)-dimethyltransferase
Reaction: 2 S-adenosyl-L-methionine + adenine2085 in 23S rRNA = 2 S-adenosyl-L-homocysteine + N6-dimethyladenine2085 in 23S rRNA
Other name(s): ErmC′ methyltransferase; ermC methylase; ermC 23S rRNA methyltransferase; rRNA:m6A methyltransferase ErmC′; ErmC′; rRNA methyltransferase ErmC′
Systematic name: S-adenosyl-L-methionine:23S rRNA (adenine2085-N6)-dimethyltransferase
Comments: ErmC is a methyltransferase that confers resistance to the macrolide-lincosamide-streptogramin B group of antibiotics by catalysing the methylation of 23S rRNA at adenine2085.
1.  Zhong, P., Pratt, S.D., Edalji, R.P., Walter, K.A., Holzman, T.F., Shivakumar, A.G. and Katz, L. Substrate requirements for ErmC′ methyltransferase activity. J. Bacteriol. 177 (1995) 4327–4332. [PMID: 7543473]
2.  Denoya, C. and Dubnau, D. Mono- and dimethylating activities and kinetic studies of the ermC 23 S rRNA methyltransferase. J. Biol. Chem. 264 (1989) 2615–2624. [PMID: 2492520]
3.  Denoya, C.D. and Dubnau, D. Site and substrate specificity of the ermC 23S rRNA methyltransferase. J. Bacteriol. 169 (1987) 3857–3860. [PMID: 2440853]
4.  Bussiere, D.E., Muchmore, S.W., Dealwis, C.G., Schluckebier, G., Nienaber, V.L., Edalji, R.P., Walter, K.A., Ladror, U.S., Holzman, T.F. and Abad-Zapatero, C. Crystal structure of ErmC′, an rRNA methyltransferase which mediates antibiotic resistance in bacteria. Biochemistry 37 (1998) 7103–7112. [PMID: 9585521]
5.  Schluckebier, G., Zhong, P., Stewart, K.D., Kavanaugh, T.J. and Abad-Zapatero, C. The 2.2 Å structure of the rRNA methyltransferase ErmC′ and its complexes with cofactor and cofactor analogs: implications for the reaction mechanism. J. Mol. Biol. 289 (1999) 277–291. [PMID: 10366505]
6.  Maravic, G., Bujnicki, J.M., Feder, M., Pongor, S. and Flogel, M. Alanine-scanning mutagenesis of the predicted rRNA-binding domain of ErmC′ redefines the substrate-binding site and suggests a model for protein-RNA interactions. Nucleic Acids Res. 31 (2003) 4941–4949. [PMID: 12907737]
[EC created 1976 as EC, part transferred 2010 to EC]