Author: OneAngstrom

When working on complex molecular systems, staying organized and minimizing distraction is key. Many molecular modelers struggle with cluttered interfaces or inefficient workflows because the tools they use don’t adapt to how they think or work. Fortunately, SAMSON offers extensive…

When working with molecular dynamics or structural analysis, it can be frustrating to lose track of a key region in your model just because the camera drifts away during visualization. Whether you are analyzing a binding site over time or…

For many molecular modelers, managing complex biomolecular systems means jumping between multiple representations: 3D structures, sequences, and data tables. A frequent source of friction is the disconnect between these representations—particularly when selecting elements in one view doesn’t immediately reflect in…

When running advanced molecular dynamics simulations, especially those involving pull groups or complex post-simulation analysis, it’s often necessary to define custom index groups. This is typically done using gmx make_ndx, which requires knowledge of GROMACS command-line syntax and selection strings.…

Geometry optimization is an essential step in molecular modeling workflows, whether you’re preparing initial configurations for simulations or cleaning up experimental structures. But if you’ve ever felt that your steepest descent minimizer just isn’t converging fast enough—especially in systems with…

One common frustration for molecular modelers preparing coarse-grained (CG) systems for molecular dynamics simulations is dealing with solvated structures where solvent beads overlap with solute atoms. These clashes often cause failed simulations or unphysical behavior. The root cause? The default…

Covalent docking is a powerful strategy in structure-based drug design, especially when targeting active sites with known reactive residues. However, setting things up properly — from hybridization to binding site specification — can be a major source of friction for…

Umbrella Sampling is a powerful technique for calculating free energy profiles along reaction coordinates, but setting it up can be time-consuming, especially when using data from existing trajectories. If you’re a molecular modeler with a finished GROMACS trajectory from a…

One of the most common frustrations that molecular modelers encounter is when a simulation runs, but the system behaves erratically—either heating up quickly or displaying unstable behavior. A major reason? Skipping or misconfiguring the NVT equilibration phase. In molecular dynamics,…