In molecular modeling, repositioning groups of atoms or meshes is crucial for better clarity, customization, or simulating dynamic processes. Yet, manual adjustments can be tedious, especially for complex systems. That’s where Undock, a signature animation from SAMSON, comes in handy. This blog explores how this animation can streamline workflows and ensure precise undocking of structures, saving time for users and improving overall accuracy.
Why Use the Undock Animation?
The Undock animation is designed to move selected groups of atoms or meshes away from their current, docked positions in a calculated and automated fashion. The new positions are algorithmically computed to ensure the objects are well-spaced from one another, making manual repositioning unnecessary. Whether you’re preparing a molecular presentation, simulating dynamic movement, or investigating docking/un-docking events, Undock can simplify these tasks significantly.
Enhanced Workflow Example
Let’s say you’re visualizing a complex molecular structure with docking interactions, and you want to showcase how the ligands undock from a receptor. Rather than manually adjusting each ligand’s position, possibly risking inaccuracies, you can apply the Undock animation.
How to Apply the Undock Animation
Implementing this animation is straightforward. Follow these key steps:
- Selecting Structural Elements: First, choose at least two structural nodes (such as molecules or atom groups) or meshes. The first node forms the static receptor, while others move. If multiple nodes are required as a receptor, you can group them into a folder and select this folder as your receptor node.
- Activating the Animation: Open the Animation panel in the Animator of SAMSON, and double-click on the Undock animation effect. This applies the animation to the selected nodes.
- Keyframe Adjustments: The movement spans between two keyframes, which you can reposition to control the duration or timing of the animation.
It’s worth noting that the amplitude of the motion is computed automatically when you create the animation. If needed, you can inspect and modify properties such as movement amplitude.
Customization for Precision
The Undock animation supports further customizations:
- Fine-Tuning Movement Amplitude: Use the Inspector panel to adjust the amplitude and ensure your structural elements are spaced as desired.
- Smooth Transitions: Modify the Easing curve to control how properties change between frames, enabling smooth or dynamic movements depending on your requirements.
Example in Action
To give concrete examples, SAMSON Connect offers several presentations utilizing the Undock effect, including:

Conclusion
Whether you’re simulating dynamic molecular interactions or preparing a presentation, the Undock animation in SAMSON can be an invaluable tool. It eliminates manual repositioning of atoms and meshes, offering accurate and efficient workflows. To dive deeper and explore all features of the Undock animation, visit the complete documentation page.
Note: SAMSON and all SAMSON Extensions are free for non-commercial use. You can download the platform at https://www.samson-connect.net.
