Figure 6.

Free-energy along the MFEPs for the pathways linking the fused and unfused dNT states shown in Fig. 5. Data are shown for (dashed) $\sigma =0.129\kappa /d^2$ and (solid) $\sigma =0.387\kappa /d^2$, and free energies are given relative to that of a dNT, $F_{\text{dt}}$. Colors correspond to different steps, and are chosen to match those in Figs. 3 and 5. Membrane configurations are shown at key steps for $\sigma =0.387\kappa /d^2$. Barriers are calculated similarly to Fig. 1.