Figure 6.

A comparison between the simulated results (see Fig. 2) and the theoretical model discussed in the text (see Eq. 3). The energy for the folded state (E_nat = −84) is the exact value for the lattice model and F_mg = −82.2 is chosen to give the appropriate folding temperature for the system in the absence of forces. A simple function is used to represent l_d(N) = (1 + l_mg)(N/N₀)^1/3 + N₀ − 1 − N. A exact value is used for l_nat = 2.7 and l_mg is fitted to a value 2, which is very close to the actual value.