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. Author manuscript; available in PMC: 2010 Aug 5.
Published in final edited form as: Nat Chem Biol. 2009 Nov;5(11):789–796. doi: 10.1038/nchembio.232

Figure 1.

Figure 1

Thermodynamic cycle for molecular recognition processes involving induced fit or conformational selection. In conformational selection, the binding competent conformation (red, P2) is pre-existing in solution prior to the addition of ligand (L). The kinetic and thermodynamic rate constants can determine if conformational selection or induced fit is more likely8,99