Kinesin Discovery
Kinesin Discovery - Related Videos
09:49
Isolation and Purification of Kinesin from Drosophila Embryos
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Cited by 5 •
2012
This is a protocol to isolate active full length Kinesin from Drosophila embryos for single-molecule biophysical studies. We show how to collect embryos, make the embryo lysate, and then polymerize microtubules (MTs). Kinesin is purified by immobilizing it on the MTs, spinning down the Kinesin-MT complexes, and then releasing the kinesin from the MTs via ATP addition.
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.
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.
11:09
Generating a "Humanized" Drosophila S2 Cell Line Sensitive to Pharmacological Inhibition of Kinesin-5
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Cited by 2 •
2016
This protocol describes how to generate a Drosophila S2 cell line that is sensitive to small molecule inhibitors of kinesin-5. The use of these cells in a cell-based error correction assay is also outlined.
13:37
Polymer Microarrays for High Throughput Discovery of Biomaterials
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Cited by 32 •
2012
A description of the formation of a polymer microarray using an on-chip photopolymerization technique. The high throughput surface characterization using atomic force microscopy, water contact angle measurements, X-ray photoelectron spectroscopy and time of flight secondary ion mass spectrometry and a cell attachment assay is also described.
FAQs
ATP hydrolysis supplies the energy for repeated conformational changes in the kinesin molecule. These structural shifts alter how the motor interacts with a microtubule, allowing successive movement toward its plus end rather than passive cargo diffusion. This coupling between chemical energy and mechanical motion explains how intracellular materials can be directed through the cell.
Plus-end directionality gives kinesin-based transport a defined route within the cell. Rather than moving randomly, kinesin carries bound cargo along microtubules toward a consistent destination, supporting organized delivery. In neurons, this directional behavior is especially important because materials must travel through extended axons to reach regions involved in synaptic activity and neuronal maintenance.
Kinesin must coordinate three linked features: microtubule binding, ATP use, and cargo attachment. Microtubule binding provides the track, ATP hydrolysis powers conformational changes, and cargo association connects the motor to transported materials. The cargo can include vesicles, proteins, organelles, and other essential components, allowing one molecular mechanism to support several forms of cellular organization.
Kinesin discovery connected molecular motor activity with the physical organization of neurons. It showed how intracellular transport can support neuronal function by moving essential materials through lengthy axons, where local production and delivery alone cannot explain synaptic maintenance. This perspective integrated molecular mechanisms with neuronal structure, trafficking, and the ongoing requirements of synaptic activity.
Characterization can reveal how kinesin binds microtubules, uses ATP, changes conformation, and moves associated cargo toward the microtubule plus end. Examining these linked properties helps researchers connect molecular behavior with intracellular transport outcomes. In neuroscience, that information clarifies how vesicles, proteins, and organelles are distributed to support neuronal maintenance and synaptic activity.
Kinesin provides a framework for understanding how impaired axonal transport could affect neurons. If essential cargo fails to move through lengthy axons, the delivery of vesicles, proteins, organelles, or other components needed for neuronal maintenance and synaptic activity may be disrupted. Consequently, kinesin research informs studies of disease mechanisms and potential therapeutic strategies targeting cellular trafficking.