Figure 2From: Metabolic regulation of Escherichia coli and its phoB and phoR genes knockout mutants under phosphate and nitrogen limitations as well as at acidic conditionComparison of the transcript levels of the phoB mutant E. coli cultivated with different P concentrations of the feed (100%, 55%, 10%): (a) global regulatory genes, (b) PhoB regulatory genes, (c) metabolic pathway genes, (d) nitrogen regulatory, and (e) respiratory chain genes.Back to article page