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. 2005 Jul 26;102(31):10841–10845. doi: 10.1073/pnas.0503055102

Fig. 1.

Fig. 1.

A proposed mechanism for ligand-induced folding. A rapid equilibrium exists between the unfolded (A) and folded (B) forms of CΔ4, favoring the unfolded state. CΔ4 molecules transiently sampling the folded state are competent to bind p85α-2 and when bound are “trapped” by the favorable free energy gained through formation of the complex (C).