The dynamic performance of hybrid promoters without yveF and yveG or expressing yveF and yveG independently. (a) The dynamic performance of P1, P2, P7, and P9, which without yveF and yveG. (b) The dynamic performance of P1&FG, P2&FG, P7&FG, and P9&FG, which express yveF and yveG independently. All data are reported as mean±s.d. from three independent experiments (n=3). Error bars are defined as s.d.