FIG. 3.

Overexpression of σ^E in wt cells results in a rapid decrease of a subset of mRNAs. A subset of mRNAs shows decreased expression after overexpression of σ^E. Using the time course data presented in Fig. 1 (wild-type strain CAG25196 compared to the wild type after overexpression of σ^E [strain CAG25197]; time course data are from Rhodius et al. [37]), the averaged RNA expression ratios are shown as a function of time after σ^E overexpression. The observed mRNA decay half-lives were estimated by fitting the data to an exponential curve (see Materials and Methods). Previously determined mRNA half-lives are from the data of Bernstein et al. (5).