Summary
The regulation of synthesis of arg enzymes was studied in a hybrid merodiploid in which an episome of Escherichia coli carrying the argR + allele was transferred to a Salmonella typhimurium argR strain. The arg enzyme levels of the hybrid merodiploid were compared to that found in argR and argR + haploids of S. typhimurium. The results showed that repression of synthesis of arg enzymes was effected through the introduction of the E. coli argR + allele but significant quantitative differences of arg enzyme levels in the argR + haploid and the hybrid merodiploid were observed.
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References
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Communicated by G.A. O'Donovan
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Kelln, R.A., Zak, V.L. Arginine regulon control in a Salmonella typhimurium-Escherichia coli hybrid merodiploid. Molec. gen. Genet. 161, 333–335 (1978). https://doi.org/10.1007/BF00331009
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DOI: https://doi.org/10.1007/BF00331009