Fluorescent Protein Visualization
Fluorescent Protein Visualization - Related Videos
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.
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.
08:46
Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli
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Cited by 34 •
2015
A streamlined approach to screening for the expression of recombinant membrane proteins in Escherichia coli based on fusion to green fluorescent protein is presented.
05:03
Fluorescent Silver Staining: A Technique to Visualize Total Protein in Polyacrylamide Gels
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2025
In this video, we demonstrate a silver staining method of polyacrylamide gels for the visualization of total protein by using fluorogenic probes.
09:38
Fluorescence Labeling to Visualize Low-Expressed Proteins in Zebrafish
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2025
Here, we present a protocol to label proteins with a fluorescence protein tag in zebrafish larvae, a newly developed and modified in vivo system especially useful for visualizing low-abundance proteins in zebrafish.
FAQs
The fluorescent signal depends on two linked optical events: excitation supplies the energy that causes the protein to emit light, and the emitted light appears at a defined wavelength. Fluorescence microscopy detects this emitted signal, allowing researchers to distinguish labeled structures from their surrounding cellular context.
Two targeting strategies answer different experimental questions. Fusing the fluorescent protein to a protein of interest places the signal where that protein is located, whereas using a cell-specific promoter restricts expression to selected cells. This distinction helps investigators separate protein-associated localization from labeling defined neuronal populations.
When fluorescent protein visualization is paired with a suitable fluorescent indicator, the signal can report changes in cellular activity rather than only the presence or location of a labeled structure. In neuroscience, this pairing extends imaging from static organization to activity-related measurements, helping link cellular behavior with neuronal structure and circuit studies.
A practical workflow starts by selecting how fluorescence should be targeted: through fusion to a protein of interest or expression under a cell-specific promoter. The chosen labeling strategy is expressed in the living system, and fluorescence microscopy is then used to detect emitted light. Researchers can examine the resulting pattern at cellular or subcellular scale.
In neural tissue, the method can make neuronal morphology, axonal projections, and synaptic organization visible. These readouts provide complementary spatial information: overall cell shape, routes taken by axons, and the arrangement of synaptic structures. Together, they help investigators examine how neural elements are organized within developing or functioning circuits.
Live imaging is valuable because the same biological system can be observed over time rather than only at a single endpoint. That temporal perspective supports studies of neural development, circuit connectivity, and disease mechanisms, while activity-sensitive indicator pairings can add information about changes in cellular activity during those observations.