Accepted name: 16S rRNA (cytosine1402-N4)-methyltransferase
Reaction: S-adenosyl-L-methionine + cytosine1402 in 16S rRNA = S-adenosyl-L-homocysteine + N4-methylcytosine1402 in 16S rRNA
Other name(s): RsmH; MraW
Systematic name: S-adenosyl-L-methionine:16S rRNA (cytosine1402-N4)-methyltransferase
Comments: RsmH catalyses the N4-methylation of cytosine1402 and RsmI (EC catalyses the 2′-O-methylation of cytosine1402 in 16S rRNA. Both methylations are necessary for efficient translation initiation at the UUG and GUG codons.
1.  Kimura, S. and Suzuki, T. Fine-tuning of the ribosomal decoding center by conserved methyl-modifications in the Escherichia coli 16S rRNA. Nucleic Acids Res. 38 (2010) 1341–1352. [PMID: 19965768]
[EC created 2010]