Figure S3 - ATPase assays of delta’-E mutants. Data plotted is the stimulation in ATPase rates from addition of primer-template DNA where 1-fold is equivalent to no change. All clamp loaders examined contained wild-type ?BCD subunits unless noted otherwise. Error bars represent the standard error of at least two measurements. The relative basal ATPase rates (in the absence of DNA) are indicated below the plot.