Reaction: S-adenosyl-L-methionine + guanine527 in 16S rRNA = S-adenosyl-L-homocysteine + N7-methylguanine527 in 16S rRNA
Other name(s): ribosomal RNA small subunit methyltransferase G; 16S rRNA methyltransferase RsmG; GidB; rsmG (gene name)
Systematic name: S-adenosyl-L-methionine:16S rRNA (guanine527-N7)-methyltransferase
Comments: The enzyme specifically methylates guanine527 at N7 in 16S rRNA.
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, PDB, CAS registry number:
1. Okamoto, S., Tamaru, A., Nakajima, C., Nishimura, K., Tanaka, Y., Tokuyama, S., Suzuki, Y. and Ochi, K. Loss of a conserved 7-methylguanosine modification in 16S rRNA confers low-level streptomycin resistance in bacteria. Mol. Microbiol. 63 (2007) 1096-1106. [PMID: 17238915]
2. Romanowski, M.J., Bonanno, J.B. and Burley, S.K. Crystal structure of the Escherichia coli glucose-inhibited division protein B (GidB) reveals a methyltransferase fold. Proteins 47 (2002) 563-567. [PMID: 12001236]