MD Analysis Beyond RMSD: Diffusion Coefficients, Umbrella Sampling, DSSP

By BioDockify Computational Research Team · September 19, 2026 · Analysis

Advanced MD analysis explained: diffusion coefficients from MSD, umbrella sampling for PMF, DSSP secondary-structure timelines, PCA and clustering — with when each applies.

Read the complete article with tables, code and references on BioDockify.

Key References

• Michaud-Agrawal, N. et al. MDAnalysis. J. Comput. Chem. 32, 2319–2327 (2011). DOI: 10.1002/jcc.21787
• Kabsch, W. & Sander, C. Dictionary of protein secondary structure. Biopolymers 22, 2577–2637 (1983). DOI: 10.1002/bip.360221211
• Torrilo, G.A. et al. Umbrella sampling workflows. J. Chem. Theory Comput. 17, 3289–3301 (2021). DOI: 10.1021/acs.jctc.1c00124
• Amadei, A. et al. Essential dynamics of proteins. Proteins 17, 412–425 (1993). DOI: 10.1002/prot.340170314

Scope & Limitations

Diffusion from short simulations is system-size-limited (finite-size effects inflate D) Umbrella results depend on window overlap and reaction-coordinate choice DSSP assignments on predicted/modeled structures carry the model's geometry errors