Proteins Inside the HSP60/HSP10 Fold Under a Constant Electric Field: Potential Implications for the Protein Folding
Lucía J Peña-Ortiz1, Julio Manuel Hernández-Pérez2, Bertha Alicia León-Chávez2
1Posgrado en Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 Sur y Av. San Claudio, Col. San Manuel, Puebla C. P. 72570, Puebla, Mexico.
International Journal of Molecular Sciences
|April 14, 2026
Summary
Chaperonins like HSP60/HSP10 use a structured electric field within their cavities to assist protein folding. This internal electric field can unfold proteins, offering insights into the protein folding problem.
Area of Science:
- Biophysics
- Molecular Biology
- Computational Biology
Background:
- Proteins require specific 3D conformations for biological function.
- Chaperonins, such as HSP60/HSP10, assist proteins in achieving correct folding.
- The precise mechanisms of chaperonin-assisted folding are not fully understood.
Purpose of the Study:
- To characterize the physical environment inside the HSP60/HSP10 chaperonin.
- To investigate the role of electrostatic potential in chaperonin-mediated protein folding.
Main Methods:
- Molecular Dynamics Simulations were employed to analyze the chaperonin's interior.
- The electrostatic potential and resulting electric field were modeled.
Main Results:
- A stable, structured electrostatic potential was identified within the chaperonin cavity.
- This potential generates a nearly constant, unidirectional electric field.
- The simulated electric field demonstrated the ability to unfold a model protein (Rhodanese).
Conclusions:
- The internal electric field of chaperonins may play a significant role in protein folding.
- Findings align with existing theories and experimental data on protein folding, including the foldon model.
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