Summary
The gene for Escherichia coli ribosomal protein S15 (rpsO) was cloned on the vector pBR322 from F-prime JCH55 DNA. The recombinant plasmid was transformed to Serratia marcescens cells and it was proved that E. coli S15 was synthesized and incorporated into ribosome particles in S. marcescens cells. A DNA fragment containing rpsO was also inserted into the vector pRF3, which changes its copy number depending on the growth temperature in a temperature-sensitive polA host. By use of this recombinant plasmid it was shown that the relative synthesis rate of S15 increased about twice even when the copy number of the plasmid increased more than twenty-fold.
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Takata, R., Aoyagi, M. & Mukai, T. Cloning of rpsO, the gene for ribosomal protein S15 of Escherichia coli . Mol Gen Genet 188, 334–337 (1982). https://doi.org/10.1007/BF00332697
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DOI: https://doi.org/10.1007/BF00332697