Non-equilibrium conformational dynamics in the function of molecular chaperones
Alessandro Barducci1, Paolo De Los Rios1
1Laboratoire de Biophysique Statistique, School of Basic Sciences, École Polytechnique Fédérale de Lausanne (EPFL), CH 1015 Lausanne, Switzerland.
Current Opinion in Structural Biology
|March 16, 2015
Summary
Molecular chaperones use ATP hydrolysis to overcome thermodynamic limitations, enabling proteins to reach functional states. This energy consumption is crucial for understanding these non-equilibrium machines and their function.
Area of Science:
- Biochemistry
- Molecular Biology
- Thermodynamics
Background:
- Molecular chaperones assist protein folding.
- ATP hydrolysis is known to be involved in chaperone function.
Purpose of the Study:
- To review recent evidence on the role of ATP hydrolysis in chaperone-mediated protein folding.
- To propose a new perspective on the relationship between chaperone function and ATP hydrolysis.
Main Methods:
- Review of experimental data.
- Theoretical analysis.
- Thermodynamic modeling.
Main Results:
- ATP hydrolysis allows molecular chaperones to escape equilibrium thermodynamics.
- Energy consumption is essential for understanding chaperone mechanisms.
Conclusions:
- Chaperone function is intrinsically linked to non-equilibrium processes driven by ATP hydrolysis.
- A novel perspective on chaperone-ATP hydrolysis interplay is proposed.
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