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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Complementation of an RNase P RNA (rnpB) gene deletion in Escherichia coli by homologous genes from distantly related eubacteria.

We report the construction of a strain of Escherichia coli in which the only functional gene for the RNA moiety of RNase P (rnpB) resides on a plasmid that is temperature sensitive for replication. The chromosomal RNase P RNA gene was replaced with a chloramphenicol acetyltransferase gene. The conditionally lethal phenotype of this strain was suppressed by plasmids that carry RNase P RNA genes from some distantly related eubacteria, including Alcaligenes eutrophus, Bacillus subtilis, and Chromatium vinosum. Thus, the rnpB genes from these organisms are capable of functioning as the sole source of RNase P RNA in E. coli. The rnpB genes of some other organisms (Agrobacterium tumefaciens, Pseudomonas fluorescens, Bacillus brevis, Bacillus megaterium, and Bacillus stearothermophilus) could not replace the E. coli gene. The significance of these findings as they relate to RNase P RNA structure and function and the utility of the described strain for genetic studies are discussed.[1]


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