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. 1975 Dec;124(3):1137-41.
doi: 10.1128/jb.124.3.1137-1141.1975.

Operator-constitutive mutants in the threonine operon of Escherichia coli K-12

I Saint-Girons, D Margarita

Operator-constitutive mutants in the threonine operon of Escherichia coli K-12

I Saint-Girons et al. J Bacteriol. 1975 Dec.

Abstract

Three Escherichia coli K-12 mutant strains resistant to DL-alpha-amino-beta-hydroxyvaleric acid were isolated in which the expression of the thr operon is constitutive. The localization and dominance properties of the mutations involved, called thrO, are those of operator mutations. The gene sequence is OABC as suggested by earlier studies.

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