OneAngstrom – Page 140

Following Atoms with the Camera: A Simple Way to Frame Better Molecular Animations

Creating molecular animations can be incredibly powerful when trying to convey structural mechanisms or simulation results — but getting the camera to follow atoms precisely in 3D space is often a challenge. Whether you’re highlighting a docking process or zooming…

How to filter molecular bonds by length in SAMSON’s Node Specification Language

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When working with molecular models, identifying bonds of specific lengths is often essential. Whether you’re analyzing structural changes, refining a force field, or creating visualizations that focus on specific bonding regimes, quickly filtering for bond lengths can save a lot…

Struggling with molecular file types? Here’s how SAMSON handles them.

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One of the most persistent issues that molecular modelers face is dealing with the variety of file formats present in computational chemistry and structural biology. Between .pdb, .mol2, electron density maps, and dozens more, managing the import process often becomes…

Duplicating Molecular Structures Without Scripts or Spreadsheets

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As molecular modeling projects grow in complexity, manually duplicating and arranging molecular structures can quickly become tedious. Whether you’re assembling a nanotube from scratch or building repeating motifs in materials science or biomolecular models, the goal is the same: replicate…

Why Applying P-NEB to a Path Is Often the Smartest Choice

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When modeling molecular systems, understanding how a molecule transitions from one conformation to another can be crucial. These transition paths often characterize reaction mechanisms, ligand unbinding, or conformational changes. However, extracting precise transition information can be computationally expensive and time-consuming,…

Avoiding Common Pitfalls When Preparing Ligands for Docking

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Preparing ligands for docking can sometimes feel like a guessing game: are all hydrogen atoms present? Are rotatable bonds under control? Is the molecule properly minimized? If you’ve found yourself spending more time troubleshooting input data than analyzing results, you’re…

Easier Umbrella Sampling from Existing Trajectories in SAMSON

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Generating initial conformations for umbrella sampling can be time-consuming, especially for researchers who already have a simulation trajectory and want to reuse it efficiently. If you’re using SAMSON’s GROMACS Wizard, there’s a streamlined and visual way to set this up…

Setting Up UFF Simulations in SAMSON Without the Guesswork

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Setting up a molecular mechanics simulation can feel like preparing for a journey with no map—especially when working with customizable force fields like the Universal Force Field (UFF). If you’ve ever hesitated because you weren’t sure how to initialize UFF…

Quickly Find Molecular Conformations Based on Atom Count in SAMSON

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Molecular modelers often deal with large datasets containing various conformations of molecules. One common task is filtering conformations based on the number of atoms—whether to identify large supramolecular assemblies, focus on smaller fragments, or prepare subsets for simulation. But scrolling…

Interpolating Protein Motions When Structures Differ: Spikes, Residues, and a Simple Trick

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One of the surprisingly common pains molecular modelers face is interpolating the motion between two conformational states of a macromolecular complex when those structures differ in the number of atoms or residues. Even small differences can impede trajectory generation, especially…