Author: OneAngstrom

One common challenge in molecular modeling is clearly and efficiently conveying dynamic behavior of systems, especially when preparing scientific presentations or instructional materials. Still images often fall short in highlighting spatial transformations, such as molecular rotations. This is where SAMSON’s…

When setting up molecular dynamics simulations in GROMACS, many researchers face a recurring hurdle: defining custom index groups to isolate specific molecular components—like protein chains—for analysis or for applying pulling forces. This can be tedious and error-prone when done manually…

Working with dynamic molecular systems often means watching specific atoms or regions as they evolve over time. Whether you’re observing a key residue in a protein, a ligand during docking, or a catalytic site in motion, it’s easy to lose…

Understanding how molecules move—whether during a drug unbinding event or a protein conformational change—is crucial in molecular modeling. But visualizing those motions in a clear and interpretable way can be a challenge. If you’ve ever tried to trace how a…

Long modeling sessions, late-night analysis, or extended scripting in SAMSON can take a toll on your eyes—especially in brightly-lit interface environments. Many molecular modelers have found themselves squinting at atomistic details under stark white UIs. Thankfully, SAMSON provides a simple…

If you’re using umbrella sampling in GROMACS to estimate free energy profiles, you probably already know how time-consuming the simulations can be. What’s even more frustrating is the uncertainty: did the sampling fully cover the reaction coordinate space? Were there…

Molecular dynamics simulations often require finer control over system components for applying specific actions like restraints, pulling, or analysis. In GROMACS, this is handled through index groups. While GROMACS automatically creates standard groups (like protein, water, ions), there are many…

When you’re exploring structure-activity relationships or looking to modify chemical structures to improve binding affinity, identifying reactive or modifiable sites is often one of the first steps. But this task—searching and highlighting specific substructures—can be repetitive and error-prone, especially when…

Visualizing complex molecular systems requires precision, clarity, and often, multiple points of view. If you’ve ever struggled with navigating different scenes or perspectives within the same molecular model, you’re not alone. Many researchers and modelers face the challenge of switching…