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Effects of varying levels of cAMP on Bgl+ mutations in ∆ihfA cells. (A) Effects of cpdA deletion and overexpression on total Bgl+ mutations in ∆ihfA cells. (B) Effects of cpdA deletion and overexpression on insertional Bgl+ mutations in ∆ihfA cells. To elevate cellular cAMP levels, cpdA was deleted. To decrease cellular cAMP levels, cpdA was driven by Ptet on plasmid pZA31.
