Cell cycle parameters of wt and XL151 strains.

Times are in minutes. Data are the mean of at least 3 independent experiments. (1)data measured. (2)data calculated using the Helmstetter's model (origin per cell = 2(C+D)/t; Helmstetter, 1996). Note that this model originally designed for E. coli B/r has been validated for K12 strains grown in these conditions [56]. Details of origin per cell calculation are in TableS1. (3)Data from flow cytometry experiments. NA: not applicable.