Continuum electromechanical modeling of protein-membrane interactions

Area of Science:

• Computational biophysics
• Soft matter physics
• Electrostatics

Background:

• Protein-membrane interactions are crucial for cellular functions.
• Understanding membrane deformation is key to biological processes.
• Electrostatic forces play a significant role in these interactions.

Purpose of the Study:

• To develop a continuum electromechanical model for protein-membrane systems.
• To describe membrane curvature induced by electrostatic interactions.
• To investigate the influence of charge distribution on membrane deformation.

Main Methods:

• Coupling macroscopic membrane strain energy with electrostatic solvation energy.
• Minimizing the electroelastic energy functional with respect to the dielectric interface.
• Applying the model to systems of increasing geometric complexity.

Main Results:

• The model successfully describes membrane curvature driven by electrostatic forces.
• It captures the sensitivity of membrane deformation to both permanent and mobile charges.
• The approach is validated across systems with varying complexity.

Conclusions:

• The proposed electromechanical model provides a robust framework for studying protein-induced membrane curvature.
• It highlights the critical role of electrostatic interactions in shaping biological membranes.
• This model can be used to predict membrane deformation in complex biological scenarios.