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SAM-dependent methyltransferase
This family uses S-AdoMet in the methylation of diverse substrates. This family includes a related group of bacterial proteins of unknown function, including Swiss:P45528. This family includes the methylase Dipthine synthase. (from Pfam)
16S rRNA (cytidine(1402)-2'-O)-methyltransferase
16S rRNA (cytidine(1402)-2'-O)-methyltransferase uses assembled 30S subunit as a substrate and catalyzes the 2-O-methylation of the ribose of cytidine 1402 (C1402) in 16S rRNA
This protein, previously known as YraL, is RsmI, one of a pair of genes involved in a unique dimethyl modification of a cytidine in 16S rRNA. See Pfam model PF00590 (tetrapyrrole methylase), which demonstrates homology between this family and other members, including several methylases for the tetrapyrrole class of compound, as well as the enzyme diphthine synthase.
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