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Analysis of the PhAc transport system when P. putida U and various mutants were cultured in MM containing glucose (5 mM), and once the sugar had been exhausted 1 mM PhAc (inducer) was added to the bacterial population. Shown is [1-14C]PhAc uptake by P. putida U (▾) and by mutants in which the genes encoding permease (▪), the specific channel (▴), or the repressor protein (•) have been disrupted. Arrow indicates addition of PhAc.
