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Published on: September 16, 2010
Protein folding: the free energy surface
1Department of Chemistry, University of Illinois at Urbana-Champaign, Illinois 61801, USA. gruebele@scs.uiuc.edu
Current Opinion in Structural Biology
|April 18, 2002
Summary
Protein folding free energy landscapes are shaped by amino acid sequence and cellular conditions. New experimental and theoretical methods reveal dominant folding pathways and hidden energy surface features.
Area of Science:
- Biophysics
- Computational Biology
- Protein Science
Background:
- Protein folding is a fundamental process governed by complex free energy landscapes.
- Understanding how sequence and environment dictate folding pathways is crucial for protein structure-function relationships.
Purpose of the Study:
- To explore the factors sculpting protein folding free energy surfaces.
- To investigate the interplay between folding, protein structure, and biological function.
- To present recent advances in modeling and experimental techniques for studying protein folding.
Main Methods:
- Utilizing quantitative models and experimental approaches.
- Estimating diffusive barrier-crossing times experimentally.
- Employing thermodynamic tuning and nonconservative mutations.
- Developing a complete microscopic theory of protein folding.
Main Results:
- Revealing how protein sequence and environment shape the folding free energy surface.
- Identifying dominant folding pathways influenced by conflicting demands of folding, structure, and function.
- Observing ultrafast protein folders suitable for full-atom simulations.
- Probing 'hidden' regions of the free energy surface.
Conclusions:
- Recent advances provide unprecedented insight into protein folding dynamics.
- A comprehensive understanding of folding landscapes is emerging from integrated experimental and theoretical efforts.
- These findings advance the field of protein science and biophysics.
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