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Secondary structure of the 3′ half of 23S rRNA (based on data from the Gutell laboratory comparative RNA site at http://www.rna.icmb.utexas.edu). The Mycobacterium sequence shown around the Erm methyltransferase target at nucleotide A2058 was selected by hybridization for mass spectrometry analysis. The E. coli numbering system for rRNA nucleotides (8, 20) is used throughout; nucleotide A2058 corresponds to A2283 in M. smegmatis rRNA numbering.
