Delineation of two distinct regulatory domains in the 5' region of the nar operon of Escherichia coli.

Abstract

A detailed restriction site map was determined for an 8.4-kilobase DNA fragment containing the 5' regulatory and promoter region of the nar operon of Escherichia coli. The 5' end of the nar operon was subcloned as a 2.5-kilobase fragment, and an intact nar operon was constructed from this subcloned fragment and an EcoRI fragment containing the remainder of… (More)

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