FIG. 5.

Both dnaB266 and dnaB8 alleles result in degradation of the nascent DNA following inactivation at 42°C. Degradation was measured as described in the legend to Fig. 2B. The relative amounts of degradation in the nascent DNA (filled symbols) and total genomic DNA (open symbols) are plotted over time for dnaB266 strain CRT266 and dnaB8 strain PC8 following a temperature shift to 42°C. The symbols indicate the averages of two independent experiments. The error bars indicate one standard deviation.