Growth curves of the Yersinia pseudotuberculosis IP32953 wild-type strain, rpoE475 mutant strain, complemented mutant, and vector control at 3°C (A), 28°C (B), 37°C (C), and 42°C (D). Measured OD600 values are shown at 20-h intervals (A), at 2-h intervals (B), and at 4-h intervals (C and D). Error bars indicate minimum and maximum values.