An interactive, comprehensive guide for running protein-ligand molecular dynamics simulations using GROMACS. This guide provides step-by-step instructions from system preparation to analysis, with a focus on practical implementation and best practices.
- Complete Workflow: End-to-end guidance from protein/ligand preparation to simulation analysis
- Interactive Interface: Clean, responsive web interface with copy-paste commands
- Expert Tips: Professional insights for simulation quality and troubleshooting
- Case Study: Complete T4 lysozyme-JZ4 ligand example with expected results
- Validation Metrics: Comprehensive criteria for assessing simulation quality
- Optimized Templates: Pre-configured MDP files for each simulation phase
Simply open GROMACS-Guide.html in any modern web browser to access the complete interactive guide.
- GROMACS (2020+ recommended)
- Python (for ligand parameterization scripts)
- Basic familiarity with command line and molecular dynamics concepts
- Protein structure processing with
pdb2gmx - Ligand parameterization using ACPYPE/CGenFF
- Complex assembly and topology building
- Force field selection guidance
- System solvation and ionization
- Energy minimization protocols
- NVT and NPT equilibration
- 10ns production MD run
- Trajectory processing and centering
- RMSD calculations for stability assessment
- Protein-ligand interaction energy analysis
- Binding mode validation
Complete workflow example using:
- System: T4 Lysozyme L99A/M102Q (PDB: 3HTB)
- Ligand: JZ4 (2-propylphenol)
- Force Field: CHARMM36
- Expected Results: Provided for validation
- AMBER (amber99sb-ildn + GAFF2)
- CHARMM (charmm36m + CGenFF)
- OPLS (oplsaa + ligpargen)
- Production Run: 10ns (configurable)
- Temperature: 300K
- Pressure: 1 bar
- Water Model: TIP3P (default)
- Ionic Strength: 150 mM NaCl
minim.mdp- Energy minimizationnvt.mdp- NVT equilibrationnpt.mdp- NPT equilibrationmd.mdp- Production MDie.mdp- Interaction energy analysis
| Metric | Target Value | Interpretation |
|---|---|---|
| Protein RMSD | 1.5-3.0 Å | Stable structure |
| Ligand RMSD | < 2.0 Å | Stable binding |
| H-bond Occupancy | >70% | Specific interactions |
| Interaction Energy | -50 to -300 kJ/mol | Strong binding |
- Drug Discovery: Protein-ligand binding studies
- Academic Research: Molecular dynamics methodology
- Education: Teaching MD simulation principles
- Method Development: Protocol optimization and validation
The guide is designed to be adaptable:
- Modify simulation lengths in MDP templates
- Adjust force field combinations
- Extend analysis protocols
- Add new case studies
- GROMACS simulation package
- Visualization software (VMD, PyMOL, or Chimera)
- Text editor for file modifications
- Python for auxiliary scripts
Contributions are welcome! Please feel free to:
- Report bugs and issues
- Suggest new features
- Add additional case studies
- Improve documentation
- Share your simulation results
This project is licensed under the MIT License - see the LICENSE file for details.
Deon
- GitHub: @Deon-07
- Project: GROMACS Simulation Guide
- GROMACS development team
- CHARMM force field developers
- MD tutorial communities
- Contributors to open-source molecular modeling tools
Note: This guide is for educational and research purposes. Always validate your simulation protocols and results against experimental data when available.
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