Problem: What is the function of the product of the galR gene in regulation of the gal operon?A. A positive regulator of the gal operonB. A negative regulator of the gal operonC. Both a positive and a negative regulator of the gal operonD. Sigma factor required expression the gal operon

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The gal operon of E. coli is transcribed from two promoters and is regulated by a single gene. The two promoters, PG1 and PG2, are overlapping and are modulated by cyclic AMP and its receptor protein (CRP).

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Problem Details

What is the function of the product of the galR gene in regulation of the gal operon?

A. A positive regulator of the gal operon

B. A negative regulator of the gal operon

C. Both a positive and a negative regulator of the gal operon

D. Sigma factor required expression the gal operon