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Free energy landscapes of structural ensembles determined for (A) αS, (B) βS, and (C) βSHC ensembles. The free energy is defined as F(Rg,SASA) = −ln p(Rg,SASA). Examples of structures found at various points on each landscape are given, and the position of the experimental micelle-bound structure of αS137 and a homology model of βS based on the αS structure are indicated by filled cyan circles.
