"16S rRNA (guanine1516-N2)-methyltransferase" . "2.1.1.242" . "16S rRNA (guanine1516-N2)-methyltransferase" . "16S rRNA (guanine¹⁵¹⁶-''N''²)-methyltransferase" . . . . . . . . . . "16S rRNA" .