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16S rRNA is encoded by 7 loci in E. coli K-12. Jump to:

• rrsA:Gene
• rrsB:Gene
• rrsC:Gene
• rrsD:Gene
• rrsE:Gene
• rrsG:Gene
• rrsH:Gene

Yokoyama and Suzuki^[1] used transposon mutagenesis to examine the tolerance of rRNAs to insertions. This was done in a single plasmid-encoded rRNA operon, complementing the Δ7rrn strain^[2].

References

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1. ↑ Yokoyama T & Suzuki T (2008) Ribosomal RNAs are tolerant toward genetic insertions: evolutionary origin of the expansion segments. Nucleic Acids Res PubMed EcoliWiki page
2. ↑ Asai T et al. (1999) Construction and initial characterization of Escherichia coli strains with few or no intact chromosomal rRNA operons. J Bacteriol 181: 3803-9 PubMed EcoliWiki page