Kid uncouples DNA replication and cell division in E. coli. (A) Average numbers of oriC- (red) and oriR1- (green) foci in ILO1 cells carrying plasmids pWX6, mR1tetO240, and pPrTsLWCKid (Kid) and cultured at 42 °C for the indicated times. Values are normalized against those in parallel control samples carrying pWX6, mR1tetO240, and empty pPrTsLWC (Ctrl). Representative images of cells at different time points are shown. (B) Relative abundance of oriC-ter (OT) phenotypes observed in ILO6 cells carrying plasmids pWX6 and pPrTsLWC (Ctrl), after culturing them at 42 °C for the indicated times. Images of representative phenotypes in this sample are shown, and the average number of oriC (green) and ter (red) foci per cell, as well as oriC/ter ratios per cell and time point, are indicated. (C) Same as in B but in cells carrying pWX6 and pPrTsLWCKid. Average numbers of foci result from dividing the total number of each type of foci by the total number of cells (minimum of 600) analyzed per sample and time point.