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PROSITE documentation PDOC00998

RsmI AdoMet-dependent methyltransferase protein family signature





Description

In bacterial 16S rRNAs, methylated nucleosides are clustered within the decoding center, and these nucleoside modifications are thought to modulate translational fidelity. The N(4), 2'-O-dimethylcytidine (m(4)Cm) at position 1402 of the Escherichia coli 16S rRNA directly interacts with the P-site codon of the mRNA. RsmI is an AdoMet-dependent methyltransferase responsible for the 2'O-methylation of C1402. It is conserved in almost all species of bacteria [1].

Proteins of the RsmI family are of about 30 to 34 Kd and contain a number of conserved regions. As a signature pattern, we selected a highly conserved region in their central section.

Last update:

April 2010 / Text revised.

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Technical section

PROSITE method (with tools and information) covered by this documentation:

RSMI, PS01296; RsmI AdoMet-dependent methyltransferase protein family signature  (PATTERN)


Reference

1AuthorsKimura S. Suzuki T.
TitleFine-tuning of the ribosomal decoding center by conserved methyl-modifications in the Escherichia coli 16S rRNA.
SourceNucleic Acids Res. 38:1341-1352(2010).
PubMed ID19965768
DOI10.1093/nar/gkp1073



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