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. 1981 Feb;145(2):984-9.
doi: 10.1128/jb.145.2.984-989.1981.

Organization and regulation of the ilvGEDA operon in Salmonella typhimurium LT2

C M Berg, K J Shaw

Organization and regulation of the ilvGEDA operon in Salmonella typhimurium LT2

C M Berg et al. J Bacteriol. 1981 Feb.

Abstract

A total of 102 isoleucine- and isoleucine-valine-requiring (ilv) mutants induced by insertion of the transposable element Tn10 have been classified to cistron by growth requirement, cross-feeding behavior, and enzyme assays. The mutations are in a polycistronic operon transcribed in the order ilvGEDA and in a monocistronic operon ilvC. Analysis of distal gene expression in these polar insertion mutants revealed the existence of two constitutive interval promoters, one preceding ilvE and the other preceding ilvD.

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References

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