Molecular modelers often need to analyze conformational transitions, loop back through molecular motions, or visualize symmetry in paths taken by atoms or groups in simulations. While viewing trajectories forward is standard, playing them in reverse can be surprisingly valuable: it…

If you’ve ever felt limited by default index groups when running GROMACS simulations, you’re not alone. Often, researchers require more flexibility to isolate and analyze specific parts of a system—say, alpha helices, or a specific chain of interest. Manually creating…

When working with molecular simulations in GROMACS, little is more frustrating than realizing — mid-way through equilibration — that you forgot to define a group of atoms you need for a specific analysis or biasing method. And while GROMACS automatically…

When preparing molecules for a simulation or cleaning up a structure after import, every molecular modeler eventually runs into the challenge of geometry optimization. Some methods are effective but slow, especially when dealing with systems undergoing large-scale collective motions. That’s…

One of the most common sources of simulation issues in molecular dynamics is the improper definition of the simulation box during setups involving pulling between molecular chains. This often results in unintended interactions across periodic boundaries, leading to inaccurate results…

Controlling the visibility of elements in molecular animations can be frustrating. You might want some parts of your model to appear at specific times without gradually fading in or tweaking transparency. This is especially important in presentations or educational videos…

Visual storytelling is a powerful tool in molecular modeling, whether you’re preparing a research presentation, explaining a mechanism, or highlighting a key structural feature. Molecular animations, when done right, can reveal dynamics that a static image simply can’t capture. However,…