SAMSON Blog – Page 126

Filtering Backbone Structures Using NSL: A Practical Guide for Molecular Modelers

If you’re working with complex molecular systems, you likely face the challenge of isolating specific structural groups or backbones based on their properties. Whether you’re performing coarse-grained modeling, refining selection in visualizations, or analyzing structural consistency, manually identifying and filtering…

Avoiding Steric Clashes in Molecular Simulations: A Quick Guide to Energy Minimization with GROMACS Wizard

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If you’re setting up molecular dynamics simulations, one of the essential – yet often underestimated – preprocessing steps is energy minimization. Skipping it, or doing it incorrectly, may lead to steric clashes, unrealistic geometries, or unstable simulations downstream. Fortunately, the…

Exploring Defects in Diamond Structures

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Small imperfections in crystal structures, known as defects, can have a big impact on materials’ physical properties—altering conductivity, stability, and even color in some cases. If you’re modeling materials like diamond at the atomic level, understanding and controlling defects is…

Keeping the Essential: Selective Removal of Crystal Waters for GROMACS Simulations

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When preparing a molecular system for simulation in GROMACS, one common yet delicate task is handling existing crystal water molecules. While some waters can safely be deleted, others—especially those tightly bound in functional sites—may be crucial to your system’s behavior.…

Pinpoint the Right Molecular Groups: A Practical Look at Node Group Selection in SAMSON

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When working with complex molecular models, one of the most recurring tasks is selecting the correct subset of structures. Whether you’re isolating a ligand, identifying functional groups, or analyzing a molecular sub-assembly, manual selection is tedious and error-prone. Fortunately, the…

What Does It Really Mean for a Node to Be Hidden in SAMSON?

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When working with complex molecular systems in SAMSON, controlling what you see—and what you don’t—is essential for clarity and focus. If you’ve ever found yourself wondering why some nodes appear invisible, seemingly at random, you’re not alone. In this post,…

How to Select Negatively Charged Residues in Seconds

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When working with biomolecular structures, identifying residues with specific properties—like charge—can be a recurring task. Whether you are focusing on the electrostatic interactions, preparing systems for simulation, or simply analyzing subsets of residues, quickly filtering negatively charged amino acids can…

Let Atoms Fade Away to Highlight What Matters

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When creating molecular animations to educate, explain, or discover, one of the biggest challenges is guiding the viewer’s attention. In complex molecular systems, every atom and bond contributes to visual clutter. But what if you could make selected atoms gently…

Focusing on What Matters: How to Align Specific Protein Regions in SAMSON

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When comparing protein structures, full-length superposition isn’t always the best approach. What if you’re only interested in a particular domain, motif, or set of residues? Structural noise from the rest of the protein can obscure meaningful insights where you need…

How to Choose Active Atoms with ARAP for Smarter Protein Path Planning

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When modeling protein conformational changes, efficiency matters. Exploring the full atomistic flexibility of a large biomolecule can be time-consuming and computationally expensive. This is where smart simplification strategies like the As-Rigid-As-Possible (ARAP) method come in handy — especially when using…