Protein Visualization
Protein Visualization - Related Videos
05:50
CUBIC-based Protein Expression Visualization: A Procedure for Visualizing Protein Expression in Full Thickness Mouse Skin Biopsies
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2023
This video describes the CUBIC-based visualization technique, a tissue clearing-dependent imaging technique for visual assessment of protein expression in whole-mount skin biopsies at single-cell resolution in 3D. This technically simple protocol allows the visualization of skin proteins without preparing skin sections.
11:10
Protein-protein Interactions Visualized by Bimolecular Fluorescence Complementation in Tobacco Protoplasts and Leaves
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Cited by 56 •
2014
Formation of protein complexes in vivo can be visualized by bimolecular fluorescence complementation. Interaction partners are fused to complementary parts of fluorescent tags and transiently expressed in tobacco leaves, resulting in a reconstituted fluorescent signal upon close proximity of the two proteins.
02:52
Visualizing Bacterial Protein Distribution in Three Dimensions by Fluorescence Imaging
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2026
Source: Bratton, B. P., et al., Three-dimensional Imaging of Bacterial Cells for Accurate Cellular Representations and Precise Protein Localization. J. Vis. Exp. (2019)This video demonstrates the method for acquiring and analyzing three-dimensional fluorescence images of bacterial cells to study protein organization at the single-cell level.
02:15
Visualization of Germination Proteins in the Inner Membrane of Bacterial Spores
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2025
Source: Wen, J., Pasman, et. al., Visualization of Germinosomes and the Inner Membrane in Bacillus subtilis Spores. J. Vis. Exp. (2019)This video demonstrates the use of structured illumination microscopy to acquire three-dimensional fluorescence images that reveal the organization of germination proteins within the bacterial spore.
05:04
An Immunolabeling Technique to Visualize the Subcellular Localization of Proteins
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2025
This video demonstrates a technique for the immunolabeling of sigma-1 receptors in a murine heart tissue section using quantum dots. The heart tissue is fixed, osmicated, stained, dehydrated, embedded in resin, and then sectioned. The sections are then treated with antibodies and labeled with quantum dots to demarcate the subcellular localization of Sigma-1 receptors using electron microscopy.
FAQs
Ribbons, surfaces, and molecular colors emphasize different aspects of a structural model. Ribbons can make secondary structure easier to inspect, surfaces can help display the protein’s three-dimensional form, and colors can distinguish regions, active sites, binding pockets, or interacting molecules. Selecting a representation according to the question helps researchers focus on relevant spatial relationships.
Protein visualization supports functional interpretation by placing structural features in spatial context. An active site can be examined relative to the surrounding fold, while a binding pocket can be viewed alongside a ligand or other interacting molecule. Comparing these locations with conformational changes helps connect three-dimensional organization to catalytic activity, molecular recognition, or altered protein behavior.
Displaying a mutation or engineered modification on a structural model allows researchers to examine its position within the protein and its relationship to nearby features. The view can indicate whether the change lies near an active site, binding pocket, or interaction region, helping relate the modification to possible effects on stability and activity. It therefore supports comparison of protein variants.
Researchers should inspect the ligand’s position relative to the protein surface, binding pocket, and nearby structural features. Molecular colors and spatial models can separate the interacting components, while the surrounding fold provides context for interpreting the site. This approach helps evaluate how structural arrangement may relate to molecular recognition and supports analysis of engineered proteins involved in binding.
Researchers begin with structural data obtained through X-ray crystallography, nuclear magnetic resonance, or cryo-electron microscopy, then represent the resulting information graphically. They can select ribbons, surfaces, and molecular colors according to the feature being examined, such as secondary structure, an active site, or a binding pocket. The resulting model provides a visual basis for structural interpretation and comparison.
Bioengineers can use these models during protein design and enzyme optimization to examine how a proposed sequence change or engineered modification may alter the protein’s three-dimensional arrangement. Visual inspection helps place changes in relation to functional regions and interactions, supporting decisions about variants for further study. The same approach also contributes to biomolecular modeling and analysis of protein–ligand interactions.
In bioengineering, the method can guide development of therapeutics, biosensors, industrial enzymes, and other engineered biological systems. Its value comes from linking structural observations with questions about stability, activity, binding, and conformational change. By revealing how a design or mutation relates to these features, visualization helps researchers interpret structural effects that may inform subsequent engineering decisions.