Science CRO Science CRO

Peer-reviewed Publication by Science CRO

Comparative analyses and molecular videography of MD simulations on WT human SOD1

2022 Computational and Theoretical Chemistry 1217:113929

This manuscript introduces molecular dynamics videography techniques that visualize timed-resolved structural transitions of proteins. High-resolution MD simulations were executed with precise protein preparation, active site parameterization, and customized force fields.

Methodological details

Proteins were reconstructed from crystallographic templates and equilibrated in solvated cubic boxes. Fragmented active site QM/MD determined subatomic coordinates for accurate transition-state and metal-ion representations.

MD simulations used custom CHARMM36 parameters for Cu-II, Zn-II, and Cu-I ions. Production runs applied PME electrostatics, LINCS constraints, and high-frequency intra-simulation communication to capture femtosecond- to nanosecond-scale events.

Molecular videography was generated by frame-by-frame high-resolution rendering of MD trajectories. Scripts automated selection, representation, frame capture, and labeling to produce 540p/48 Hz visualizations for comparative analysis across multiple protein conformations.

Critical findings

  • • Identification of optimal crystallographic template for MD, ensuring reproducible and accurate protein modeling.
  • • Demonstrated high-resolution videography captures time-resolved intra-protein motions, covalent bond dynamics, and hydrogen-bond fluctuations.
  • • Fragmented active site QM/MD enhances simulation accuracy for metalloenzyme active sites and transition states.
  • • Framework generalizable to other proteins, enabling rapid visual hypothesis testing and method validation in silico.