Cargo Composition
Cargo Composition - Related Videos
11:09
Characterizing the Composition of Molecular Motors on Moving Axonal Cargo Using "Cargo Mapping" Analysis
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Cited by 8 •
2014
Intracellular transport of cargoes, such as vesicles or organelles, is carried out by molecular motor proteins that track on polarized microtubules. This protocol describes the correlation of the directionality of transport of individual cargo particles moving inside neurons, to the relative amount and type of associated motor proteins.
08:06
Identification of Kinesin-1 Cargos Using Fluorescence Microscopy
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Cited by 1 •
2016
Here, a protocol is presented to identify Kinesin-1 cargos. A motorless mutant of the Kinesin-1 heavy chain (KIF5B) aggregates in the cytoplasm and induces aggregation of its cargos. Both aggregates are detected under fluorescence microscopy. A similar strategy can be employed to identify cargos of other motor proteins.
02:35
Visualizing Intracellular Transport of Cargo in Cultured Astrocytes
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2025
Source: Creighton, B. A., et al. Visualizing and Analyzing Intracellular Transport of Organelles and Other Cargos in Astrocytes. J. Vis. Exp. (2019)This video demonstrates the visualization of intracellular cargo transport in cultured astrocytes using a fluorescent acidotropic probe that selectively labels acidic endolysosomal vesicles. Time-lapse imaging and Z-stack acquisition with a confocal microscope allow tracking of fluorescently labeled cargo throughout the three-dimensional cell volume.
09:00
Cargo Loading onto Kinesin Powered Molecular Shuttles
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Cited by 4 •
2010
Molecular shuttles consisting of functionalized microtubules gliding on surface-adhered kinesin motor proteins can serve as a nanoscale transport system. Here, the assembly of a typical shuttle system is described.
13:37
Generation of Composite Plants in Medicago truncatula used for Nodulation Assays
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Cited by 7 •
2011
We demonstrate how hairy root composite plants can be used to study plant-rhizobium interactions and nodulation in the difficult-to-transform species Medicago truncatula.
FAQs
Selection begins when sorting signals on proteins or nucleic acids are recognized by cargo receptors, adaptor proteins, or coat complexes. These components help concentrate particular molecules and package them into a carrier rather than incorporating cargo randomly. The resulting molecular mixture can therefore support transport to a specific destination and contribute to the carrier’s biological function.
These components provide different parts of the selection and packaging process. Cargo receptors recognize transported molecules directly or through associated signals, while adaptor proteins and coat complexes help organize and concentrate the selected material. Their coordinated activity influences which proteins or nucleic acids become enriched in a carrier and consequently affects what the carrier can deliver.
The molecules packaged into a carrier are linked to its biological activity and routing. A cargo profile containing particular proteins or nucleic acids may support secretion, intracellular trafficking, or communication between cells, while another profile may be associated with a different destination. Examining these molecular differences helps connect transport decisions with cellular outcomes.
Analysis can reveal which proteins or nucleic acids are transported and how those molecules relate to cellular regulation. In particular, it can clarify mechanisms of secretion, movement within cells, and communication between cells. This information also helps researchers connect the molecular contents of carriers with their biological effects instead of studying transport pathways only by location.
Extracellular vesicles provide a context in which researchers can examine transported molecules and relate them to effects on other cells. Characterizing their cargo can support investigation of cell-to-cell communication and can help identify molecular patterns relevant to disease biomarkers. The same logic links vesicle contents with potential uses in biological research and therapeutic development.
Molecular cargo can serve as a source of information about biological states, making its analysis relevant to disease biomarker research. It also provides a basis for considering how carriers might transport selected material for drug delivery. In therapeutic engineering, linking cargo with biological effects can guide efforts to design carriers with useful functions.