Single Vesicle Insertion
Single Vesicle Insertion - Related Videos
02:35
Single-Cell Culture of Bacteria Within Giant Vesicles
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2025
Source: Morita, M., et al. Bacterial Cell Culture at the Single-cell Level Inside Giant Vesicles. J. Vis. Exp. (2019).This video demonstrates a method for culturing and observing individual bacterial cells encapsulated inside giant vesicles anchored to a supported lipid bilayer. The system enables stable, long-term imaging of single-cell growth dynamics in a confined, physiologically relevant microenvironment.
01:26
Insertion of Single-pass Transmembrane Proteins in the RER
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2023
Integral membrane proteins are proteins adhered to the lipid bilayer of a cell organelle or membrane. They can be of two types: transmembrane integral proteins that span the lipid bilayer and monotopic proteins that are attached to either side of the membrane but do not pass through it. Integral transmembrane proteins possess transmembrane and extra membrane domains. The transmembrane domains are primarily made of 20-25 hydrophobic amino acids arranged in a helical secondary confirmation. These...
12:08
Generating Transgenic Plants with Single-copy Insertions Using BIBAC-GW Binary Vector
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Cited by 4 •
2018
Using a pBIBAC-GW binary vector makes generating transgenic plants with intact single-copy insertions, an easy process. Here, a series of protocols is presented that guide the reader through the process of generating transgenic Arabidopsis plants, and testing the plants for intactness and copy number of the inserts.
08:36
FM Dyes in Vesicle Recycling
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2023
FM dyes are a class of fluorescent molecules that has found important use in studying the vesicle recycling process. By virtue of a chemical structure, these molecules can insert themselves into the outer leaflet of phospholipid bilayer membranes. After membrane insertion, they are internalized into the cell via endocytosed vesicles, and released when these vesicles recycle back to the membrane. Since, these dyes fluoresce strongly in the hydrophobic environment within membranes and weakly in...
06:26
Pulling Membrane Nanotubes from Giant Unilamellar Vesicles
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Cited by 42 •
2017
Many proteins in the cell sense and induce membrane curvature. We describe a method to pull membrane nanotubes from lipid vesicles to study the interaction of proteins or any curvature-active molecule with curved membranes in vitro.
FAQs
In regulated exocytosis, Ca2+ influx acts as the signal that links electrical activity to membrane fusion. An arriving action potential can open calcium channels, allowing Ca2+ to activate the fusion machinery. This coupling makes secretion responsive to cellular stimulation rather than simply to vesicle arrival, which is important for controlled release.
SNARE proteins provide the molecular linkage that draws the vesicle membrane and plasma membrane into close apposition. Their action helps overcome the separation between the two membranes and supports progression toward fusion-pore formation. Because this step connects vesicle arrival with actual fusion, defects in the machinery can disrupt secretion.
The fusion pore is the transient opening created when the two membranes begin to merge. Its formation provides a route for vesicle cargo to reach the cell exterior and marks a discrete stage in the fusion sequence. Examining this brief event helps connect molecular membrane rearrangement with the functional outcome of secretion.
A single vesicle insertion can be treated as a discrete unit of secretion rather than as an undifferentiated bulk response. This perspective helps investigators examine how cells control individual release events, membrane addition, and signaling output. It is particularly useful when brief fusion events provide information about secretory behavior or defects.
Analyses centered on these events can inform three connected processes: secretion, membrane turnover, and signaling. The same fusion event may deliver cargo outside the cell while also adding vesicle membrane to the plasma membrane. Consequently, the approach links transport of secretory products with changes in the cell surface produced by membrane incorporation.
Its relevance extends across research areas in which regulated release matters. In neuroscience, it helps frame synaptic secretion; in endocrinology, it supports analysis of secretory activity. The event-level perspective also contributes to investigating synaptic or secretory defects, where altered fusion could affect signaling or the release of vesicle cargo.