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A1518 and A1519 dimethylation is described in the main text. (a) Illustration of h44 and h45 (forest green) of the E. coli 16S rRNA (PDB ID7OE1). A1518 and A1519 nucleotides are shown in magenta. (b) Illustration of h45 (blue) and KsgA (green) extracted from the published structure of the ΔkgsA pre-30S subunit•KsgA complex (PDB ID 7O5H). A1518 and A1519 are shown in orange.
