Polarizable embedding QM/MM: the future gold standard for complex (bio)systems?

Area of Science:

• Computational Chemistry
• Biophysics
• Quantum Mechanics

Background:

• Hybrid quantum mechanics/molecular mechanics (QM/MM) methods are standard for studying biological systems.
• Traditional QM/MM neglects crucial interactions between quantum and classical regions.
• Polarizable embedding offers a more accurate representation of these interactions.

Purpose of the Study:

• To review the induced point dipole formulation of polarizable QM/MM.
• To highlight efficient, linear-scaling implementations for complex biosystems.
• To discuss applications in spectroscopy and molecular dynamics.

Main Methods:

• Focus on the induced point dipole formulation in polarizable QM/MM.
• Utilize efficient and linear-scaling computational implementations.
• Apply methods to spectroscopy prediction and molecular dynamics simulations.

Main Results:

• Demonstrated the applicability of polarizable QM/MM to complex biosystems.
• Showcased successful use in predicting spectroscopies.
• Enabled advanced molecular dynamics simulations, including non-adiabatic dynamics.

Conclusions:

• Efficient polarizable QM/MM methods are powerful tools for biosystem modeling.
• Further theoretical and computational developments are needed for wider adoption.
• These advancements are crucial for accurate simulations of biological processes.