For molecular modelers, one of the most basic yet critical steps in the workflow is selecting the right nodes to interact with structures effectively. Whether you’re selecting atoms, residues, or entire molecules, this foundational skill underpins most key actions, including inspection, geometry measurement, and editing. In SAMSON, selection is not only intuitive but also remarkably flexible thanks to its comprehensive tools and commands.
Why selection matters
In molecular modeling, an accurate selection saves time and prevents potential errors. Imagine needing to apply a property change to a specific part of a large protein or measuring distances between atom pairs. Without precise selection, you risk erroneous operations. SAMSON addresses this by offering diverse tools to match user scenarios—from beginners to advanced users.
Overview of SAMSON’s selection methods
SAMSON provides multiple approaches to make your selections based on preference and task:
- Interactive selection: Use your cursor to click and select directly within the molecular visualization.
- Selection commands: Use powerful, context-specific commands to filter nodes.
- Editors: Gain granular control by specifying nodes in the Inspector or relevant panels.
- Filters: Filter nodes based on properties like name, type, or position.
- Node Specification Language (NSL): An advanced scripting-like method to streamline selection in large systems.
Each method supports various use cases. For example, users new to SAMSON often start with interactive selection, while NSL becomes invaluable for experienced researchers handling massive molecular systems.
Tips for efficient selection
To make the most of SAMSON’s capabilities, here are some actionable tips:
- Start Small: If you’re unfamiliar with NSL or filters, practice with smaller systems or dive into the Selecting section of the documentation for step-by-step guidance.
- Combine tools: You don’t have to stick to one method—interactive selection and filters often work well in tandem.
- Use undo and redo: If you’re unsure about a selection, leverage SAMSON’s history feature for safe experimentation.
- Explore NSL: As you become more comfortable, experiment with the Node Specification Language. While it might feel advanced at first, it can save hours on complex systems.
Learn more
If you’re just beginning your selection journey, we highly recommend starting with SAMSON’s Selecting documentation. It provides a foundational understanding to build your skills further.
For those ready to dive deeper into the workflows, check out the next sections—Inspecting, Measuring, and History.
Visit the main page of the documentation at Work with Structures for an overview of all related topics and their recommended order.
SAMSON and all SAMSON Extensions are free for non-commercial use. You can explore and download SAMSON at SAMSON Connect.