Assembling a molecule from fragments can feel deceptively simple: choose a piece, place it, and connect it. In practice, the difficult part is often knowing whether the connection is sensible, which atom should attach, and how to recover when a…
When a molecular scene contains many kinds of nodes, a broad search can return more than you meant to inspect. Property models have their own Node Specification Language (NSL) attribute space, which gives you a way to keep queries focused:…
A molecular dynamics setup can be scientifically sound and still be frustrating to run: perhaps your lab uses a specific GROMACS installation, you need to reproduce a calculation with a particular version, or a local simulation makes your computer feel…
A crystal structure can look deceptively straightforward: open a file, see atoms, and move on. But when you are trying to model a material, a perfect, fully occupied lattice may not represent the structure you actually want to study. Defects…
Umbrella sampling can produce many windowed simulations, but turning those separate pieces into a useful picture is a common sticking point. A Potential of Mean Force (PMF) brings the data together along a reaction coordinate. Yet a smooth-looking curve is…
A molecular model can contain more detail than an audience can absorb at once. When you need to explain a binding site, a structural region, or the relationship between selected atoms, leaving every part visible can make the important features…
A molecular simulation can be ready in principle but still be a poor candidate for a cloud run: perhaps the system is too large for your workstation, the setup contains an error, or you are unsure what the run will…
A molecular structure can be difficult to inspect for a simple reason: the atoms or regions you care about are surrounded by everything else. Finding a selection, revealing a buried feature, and keeping track of the parts you want to…
Finding the right atoms in a molecular model can be more tedious than the analysis that follows. A selection that is too broad brings in hydrogens, waters, or neighboring chains; one that is too narrow can quietly leave out atoms…
A path can be easy to understand on screen and surprisingly awkward to use in a simulation workflow. You may see a ligand move through a protein, but downstream analysis often needs the coordinates at each step—not just an animation.…
