Mutational Analysis of theficPromoter Recognized by RpoS (σ38) inEscherichia coli

Abstract
Fic gene expression at the stationary phase is dependent on RpoS (sigma 38). For this paper, the fic promoter (P fic) mutants were isolated; C at the position -34 was changed into T. They did not show the stationary phase-specific expression dependent on RpoS in vivo. Furthermore, it was confirmed that they were recognized by E sigma 70 as efficiently as E sigma 38 in vitro.