Deoxyribonucleic acid sequence of araBAD promoter mutants of Escherichia coli.


The controlling site region for the araBAD operon is defined, in part, by two classes of cis-acting constitutive mutations. The aralc mutations allow low-level constitutive expression of ara-BAD in the absence of the positive regulatory protein coded for by the araC gene, whereas the araXc mutations allow expression of araBAD in the absence of the cyclic… (More)


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