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A group of operons that are under the control of the same regulatory protein. An example is the SOS regulon that is induced when there is DNA damage. The SOS regulon is under the control of a repressor protein encoded by the LexA gene. The LexA protein represses four operons (specifying RecA, UvrA, UvrB, and UvrC), all of which are involved in recombination and DNA repair. See RecA protein, SOS boxes.

Subjects: Genetics and Genomics.

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