Modeling Thick Filament Activation Suggests a Molecular Basis for Force Depression

Area of Science:

• Muscle physiology
• Biophysics
• Computational biology

Background:

• Developing multiscale models for muscle function is challenging due to limited self-consistent data.
• Connecting molecular and cellular muscle mechanics requires integrated experimental and computational approaches.

Conclusions:

• The developed multiscale data are self-consistent and suitable for testing other models.
• The model provides insights into the molecular mechanisms of muscle force regulation, including residual force enhancement and force depression.
• This work establishes a framework for integrating molecular and cellular levels of muscle function.