SMOG 2 and OpenSMOG: Extending the limits of structure-based models
Antonio B de Oliveira1, Vinícius G Contessoto1, Asem Hassan2,3
1Center for Theoretical Biological Physics, Rice University, Houston, Texas, USA.
Protein Science : a Publication of the Protein Society
|October 16, 2021
Summary
The updated SMOG 2 software and OpenSMOG interface enhance structure-based modeling for complex biomolecular systems. These tools enable customized force fields for large-scale simulations, aiding research in molecular dynamics and protein structure analysis.
Area of Science:
- Computational Biology
- Biophysics
- Molecular Dynamics Simulations
Background:
- Structure-based models are crucial for understanding biomolecular dynamics.
- The SMOG 2 software package facilitates the creation and application of these models.
- Previous versions enabled customized models for various polymer-ligand systems.
Purpose of the Study:
- To describe extensions and demonstrate capabilities of the latest SMOG version (v2.4.2).
- To introduce the OpenSMOG interface for OpenMM simulation libraries.
- To showcase the application of enhanced structure-based modeling to large and complex biomolecular systems.
Main Methods:
- Utilized SMOG 2 (v2.4.2) for customized force field generation.
- Employed the OpenSMOG module for integrating arbitrary potentials with OpenMM.
- Performed large-scale molecular dynamics simulations on systems with millions of atoms.
Main Results:
- Introduced new tools for user-defined force field customization.
- Enabled seamless integration with OpenMM, allowing flexible potential definitions.
- Successfully simulated complex systems including SARS-CoV-2 Spike protein, HIV-1 capsid, and ribosome lattices.
Conclusions:
- SMOG 2 and OpenSMOG offer robust support for developing and applying structure-based models.
- The enhanced software facilitates the study of large and intricate biomolecular systems.
- These advancements empower researchers in computational biophysics and structural biology.
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