An undergraduate laboratory activity on molecular dynamics simulations

Area of Science:

• Biochemistry
• Computational Biology
• Biology Education

Background:

• Modern biology education requires understanding of key concepts like structure-function relationships.
• Essential skills for 21st-century biologists include modeling and simulation.
• Existing curricula may lack hands-on experience with dynamic molecular processes.

Purpose of the Study:

• To describe a laboratory activity for investigating protein structure and function dynamics.
• To introduce students to molecular dynamics (MD) simulations as a modeling technique.
• To align biology education with modern scientific practices outlined in Vision and Change.

Main Methods:

• The activity spans two 3-hour lab periods.
• Students learn foundational programming in Python and basic MD simulation principles.
• Students utilize expert MD software (VMD/NAMD) for advanced simulations and analysis.

Main Results:

• Students gain practical experience with MD simulations, from single-atom motion to complex protein dynamics.
• Analysis of protein conformation changes due to temperature, solvation, and phosphorylation is performed.
• The activity effectively integrates physics concepts (kinematic equations) with biological applications.

Conclusions:

• This laboratory activity provides an accessible and engaging method for teaching protein dynamics.
• Utilizing free software packages (Abalone, VMD/NAMD) makes the activity cost-effective.
• The approach enhances students' conceptual understanding and technical skills in computational biology.