BFEE: A User-Friendly Graphical Interface Facilitating Absolute Binding Free-Energy Calculations.

Area of Science:

• Computational chemistry
• Molecular dynamics simulations
• Biophysics

Background:

• Estimating protein-ligand binding free energies is crucial in drug discovery and molecular biology.
• Existing computational methods often require extensive expertise and manual setup.
• There is a need for user-friendly tools to streamline binding free energy calculations.

Purpose of the Study:

• To develop a computational toolkit, the Binding Free-Energy Estimator (BFEE), to simplify and automate the estimation of standard binding free energies.
• To integrate BFEE as a plug-in within the Visual Molecular Dynamics (VMD) software.
• To reduce human intervention in the simulation and post-processing stages of binding free energy calculations.

Main Methods:

• BFEE utilizes a geometrical approach and recent advancements in collective variables.
• The toolkit generates simulation input files based solely on the protein-ligand complex structure.
• BFEE automates the post-treatment of simulation outputs for free-energy calculations.

Main Results:

• BFEE enables direct estimation of absolute binding free energies from one-dimensional potentials of mean force.
• The toolkit significantly minimizes the required human intervention throughout the workflow.
• The graphical interface of BFEE enhances usability and practicality for researchers.

Conclusions:

• BFEE offers an effective and practical solution for accurate in silico estimation of protein-ligand binding free energies.
• The tool's ease of use and automation make complex calculations more accessible to a wider range of users.
• BFEE facilitates faster and more efficient research in areas requiring binding free energy quantification.