Venus Fluorescence
Venus Fluorescence - Related Videos
08:54
Bimolecular Fluorescence Complementation
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Cited by 66 •
2011
The subcellular localization of proteins is important in determining the spatio-temporal regulation of cell signaling. Here, we describe bimolecular fluorescence complementation (BiFC) as a straightforward method for monitoring the spatial interactions of proteins in the cell.
11:11
Flow Cytometric Analysis of Bimolecular Fluorescence Complementation: A High Throughput Quantitative Method to Study Protein-protein Interaction
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Cited by 8 •
2013
Flow cytometric analysis of Bimolecular Fluorescence Complementation provides a high throughput quantitative method to study protein-protein interaction. This methodology can be applied to mapping protein binding sites and for screening factors that regulate protein-protein interaction.
17:08
In vivo Clonal Tracking of Hematopoietic Stem and Progenitor Cells Marked by Five Fluorescent Proteins using Confocal and Multiphoton Microscopy
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Cited by 11 •
2014
Combinatorial 5 fluorescent proteins marking of hematopoietic stem and progenitor cells allows in vivo clonal tracking via confocal and two-photon microscopy, providing insights into bone marrow hematopoietic architecture during regeneration. This method allows non-invasive fate mapping of spectrally-coded HSPCs-derived cells in intact tissues for extensive periods of time following transplantation.
09:22
Introduction to Fluorescence Microscopy
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2023
Fluorescence microscopy is a very powerful analytical tool that combines the magnifying properties of light microscopy with visualization of fluorescence. Fluorescence is a phenomenon that involves absorbance and emission of a small range of light wavelengths by a fluorescent molecule known as a fluorophore. Fluorescence microscopy is accomplished in conjunction with the basic light microscope by the addition of a powerful light source, specialized filters, and a means of fluorescently...
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.
FAQs
Following translation, Venus folds into a structure that supports formation of an internal chromophore. This chromophore contains a conjugated molecular structure, meaning its linked bonds can interact with light. That arrangement enables Venus to absorb blue excitation light and emit yellow-green fluorescence, connecting protein folding and chromophore formation directly to the observable biochemical signal.
The chromophore absorbs higher-energy blue light, then releases part of that energy as lower-energy emitted light. Because the emitted photons occupy a different region of the visible spectrum, the observed signal appears yellow-green. This excitation and emission relationship allows researchers to illuminate Venus with blue light while detecting its fluorescence separately during imaging.
A Venus fusion can make the fluorescence signal follow the location of its target protein inside a cell. Instead of measuring Venus independently, researchers interpret the emitted signal as a visual reporter of the fusion partner's localization. This strategy supports microscopy-based analysis of where a biochemical component is present and how its distribution changes.
These properties improve the practical quality of the fluorescent readout. Rapid maturation can make signal development more timely after expression, while brightness helps produce a readily detectable image. Improved folding supports formation of functional Venus protein. Together, these features make the reporter suitable for live-cell imaging and studies that follow biochemical events over time.
A typical strategy begins by choosing either a target-protein fusion or a promoter that controls Venus expression. After the construct is translated and the reporter matures, researchers use fluorescence microscopy to detect the emitted signal. They then relate its location or intensity to protein distribution, gene-expression activity, or another tracked biochemical event.
A fusion is appropriate when the goal is to follow the localization of a particular target protein. Promoter-controlled expression is better suited to reporting activity associated with a selected gene-expression program. The choice determines what the fluorescence represents: the spatial distribution of a protein in the first case, or promoter-linked expression in the second.
Venus can serve as the visible reporting element in a biosensor, converting a biochemical or cellular event into a measurable fluorescence signal. Microscopy can then reveal changes in signal location or strength. This makes the reporter useful not only for visualizing molecular interactions and gene expression, but also for quantitative studies of biochemical processes in living cells.