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The energy change between the initial and final conformations for the loop between Glu16 and Leu20 (the region of the first kink). The initial conformation (right-handed α-helix) is like minimum a or b in Figure 6, and the final conformation is like a pair of kinks that each interpolate between a and b, as in Figure 6. See the profile of the virtual-bond angles θi in Figure 9b.
