Molecular modeling often requires precise control over how groups of atoms or meshes are rearranged within simulations. For researchers and professionals in structural biology or computational chemistry, this can be a daunting task, especially when dealing with docked configurations. The Undock animation in SAMSON offers a solution to this challenge by allowing users to systematically unbind structures from their docked positions and visualize these movements with ease.
What Exactly Does the Undock Animation Do?
The Undock animation effect helps users move groups of atoms or meshes away from their docked positions. These positions are commonly defined structures where molecules or fragments sit tight, and undocking them could be critical for analyzing their behavior or creating motion-based presentations for conferences or publications.
One of the ways the Undock animation stands out is its ability to automatically calculate final positions for the selected nodes, ensuring that the undocked structures are placed at reasonable distances from their origins. And if you’re preparing a professional presentation, this animation streamlines the process of illustrating these key biological interactions or dissociations in a manner that’s both clear and dynamic.
How to Use the Undock Animation Step-by-Step
If you’re just starting out with SAMSON, applying the Undock animation is fairly straightforward. Here’s a step-by-step guide:
- Begin by selecting the structural nodes or meshes you’d like to undock. Make sure to select at least two: the first node serves as the receptor that stays static, while the rest are animated. If multiple nodes should act as the receptor, you can group them into a folder and select the folder as the first node.
- If no nodes are selected, don’t worry—SAMSON can attempt to infer the appropriate nodes to animate.
- Open the Animation panel, located within the Animator interface, and double-click the Undock animation effect. Between two keyframes, the animation will move the selected nodes from docked to undocked positions.
- To modify the amplitude of the movement, inspect the animation using the Inspector. SAMSON initially computes the amplitude automatically but gives you full flexibility to adjust it to your needs.
You can also customize the timing of the animation by adjusting the keyframes or changing the easing curve parameters for smooth transitions between frames.
Key Features and Tips
While using the Undock animation, here are some additional points to keep in mind:
- You can always reposition or fine-tune the animation by moving the keyframes directly in the Animator interface.
- The easing curve provides control over how the animation behaves between frames, offering options like linear interpolation or more dynamic transitions.
- The Undock animation integrates seamlessly with other animations available in SAMSON, such as Dock or Move atoms, giving you versatility in designing simulations or visual storytelling.
Here’s an example visualization of the Undock animation in action:

Why This Is Important
For molecular modelers, the ability to manipulate and present structural dissociations is crucial in contexts such as docking studies, drug development, and structure-based design. The Undock animation simplifies what could otherwise be a labor-intensive visualization task, saving time and ensuring clarity in communication.
Explore the full details of this powerful feature on the documentation page: Undock Animation Documentation.
SAMSON and all SAMSON Extensions are free for non-commercial use. If you haven’t already, you can download SAMSON at SAMSON Connect.
