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Plots of the mean unwinding processivity of a helicase as a function of the applied tension, for U0/KBT = 0 (passive), 1, 2, 3, 4, 5, 10, 15, and 20. The processivity always increases with increasing tension destabilizing the ss-dsNA junction and decreases with increasing step height. We used the same parameters as in Fig. 4. (a)–(d) correspond to f = 0.01, 0.05, 0.25, and 0.5, respectively. To see this figure in color, go online.
