Induced fit, conformational selection and independent dynamic segments: an extended view of binding events

Single molecule and NMR measurements of protein dynamics increasingly uncover the complexity of binding scenarios. Here, we describe an extended conformational selection model that embraces a repertoire of selection and adjustment processes. Induced fit can be viewed as a subset of this repertoire,...

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Bibliographic Details
Published in:Trends in biochemical sciences (Amsterdam. Regular ed.) 2010-10, Vol.35 (10), p.539-546
Main Authors: Csermely, Peter, Palotai, Robin, Nussinov, Ruth
Format: Article
Language:English
Subjects:
Animals
Humans
Protein Binding
Protein Conformation
Protein Folding
Proteins - chemistry
Proteins - metabolism
Signal Transduction
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Summary:Single molecule and NMR measurements of protein dynamics increasingly uncover the complexity of binding scenarios. Here, we describe an extended conformational selection model that embraces a repertoire of selection and adjustment processes. Induced fit can be viewed as a subset of this repertoire, whose contribution is affected by the bond types stabilizing the interaction and the differences between the interacting partners. We argue that protein segments whose dynamics are distinct from the rest of the protein (‘discrete breathers’) can govern conformational transitions and allosteric propagation that accompany binding processes and, as such, might be more sensitive to mutational events. Additionally, we highlight the dynamic complexity of binding scenarios as they relate to events such as aggregation and signalling, and the crowded cellular environment.
ISSN:0968-0004
1362-4326
DOI:10.1016/j.tibs.2010.04.009