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. 1999 Aug 31;96(18):9970–9972. doi: 10.1073/pnas.96.18.9970

Figure 2.

Figure 2

(A). The traditional view of induced fit and allostery where binding in one site (shaded) causes changes at a remote site (rugged). (B) The concept of conformational substates described here, where preexisting conformations are in equilibrium. The equilibrium shifts to one of conformations that fits incoming ligand.