FIGURE 2.
Identification of GAD box and RpoS binding sites on the genes expressed differentially by polyamines. A, alignment of putative GAD box sequence from sequences upstream of five genes differentially expressed in gadE+ versus ΔgadE cells after polyamine induction. B, alignment of putative sigma38 (RpoS) binding sites from sequences upstream of acid fitness island genes and glutamate decarboxylase genes differentially expressed in rpoS+ versus ΔrpoS cells after polyamine induction. These putative binding sequences were identified by pattern search tools of coliBASE, and the frequency plots were developed by WebLogo (42).