Gliding Velocity
Gliding Velocity - Related Videos
02:44
Gliding Motility in Phormidium lacuna Filaments
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2025
Source: Weber, N., et al., Natural Transformation, Protein Expression, and Cryoconservation of the Filamentous Cyanobacterium Phormidium lacuna. J. Vis. Exp. (2022)This video demonstrates the procedure to assess gliding motility in Phormidium lacuna by homogenizing filament cultures to create a uniform suspension, preparing a Petri plate assay setup over a microscope slide, and visualizing filament movement.
07:55
Flexural Rigidity Measurements of Biopolymers Using Gliding Assays
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Cited by 2 •
2012
A method to measure the persistence length or flexural rigidity of biopolymers is described. The method uses a kinesin-driven microtubule gliding assay to experimentally determine the persistence length of individual microtubules and is adaptable to actin-based gliding assays.
06:01
The Gliding Actin Filament Assay: An In Vitro Motility Assay to Study Translocation of Actin Filaments on Immobilized Myosins
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2025
In this video, we perform an in vitro motility assay to analyze the actin-myosin interactions. The gliding movement of actin filaments on immobilized myosin molecules is visualized using fluorescence microscopy.
01:15
Instantaneous Velocity - I
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2023
The average velocity during a time interval cannot tell us how fast or in what direction a particle is moving at any given time during the interval. To calculate this, it is important to know the instantaneous velocity, which is the velocity at a specific instant of time or at a specific point along the path. Instantaneous velocity is the quantity that measures how fast an object is moving along its path. In other words, the instantaneous velocity vx of an object is the limit of the average...
01:19
Drift Velocity
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2023
The high speed of electrical signals results from the fact that the force between charges acts rapidly at a distance. Thus, when a free charge is forced into a wire, the incoming charge pushes other charges ahead due to the repulsive force between like charges. These moving charges move the charges farther down the line. The density of charge in a system cannot easily be increased, so the signal is passed on rapidly. The resulting electrical shock wave moves through the system at nearly the...
FAQs
Gliding velocity reflects a balance between force generation and resistance from the surrounding environment. Coordinated surface adhesion can provide traction, contractile forces can drive deformation or displacement, and propulsion systems can contribute movement through a medium. If generated force changes or environmental resistance increases, the measured speed or direction may change, revealing how the locomotion system operates.
Surface adhesion supports traction against a surface, contractile forces generate internal mechanical work, and propulsion systems drive movement through a medium. These mechanisms can be distinguished by examining how locomotion responds to different surfaces, chemical conditions, or inhibitors. The comparison links a measured change in velocity to the process most likely influencing movement.
Surface properties, chemical conditions, and inhibitors can alter the balance between generated force and environmental resistance. A change in any of these factors may therefore produce a different speed or direction. Comparing measurements under controlled changes helps identify whether movement depends strongly on adhesion, contractile activity, propulsion, or the surrounding conditions.
Comparing values across organisms or genetic variants can expose biological differences in motility. A higher or lower measured speed, or a change in direction, may indicate that the systems differ in their movement machinery or its regulation. Such comparisons help researchers characterize variation rather than treating locomotion as a single uniform trait.
A useful workflow begins by measuring movement of the biological system, recording both how fast it travels and the direction of travel. Researchers can then compare those measurements among organisms or genetic variants, or after changing surfaces, chemical conditions, or inhibitors. This approach links a quantitative locomotion readout to specific biological or environmental differences.
These measurements can be used to investigate microbial behavior, host colonization, development, and tissue invasion. In each setting, researchers can examine how movement changes among organisms or genetic variants, or under altered surfaces, chemical conditions, and inhibitors. The resulting comparisons connect locomotor performance with biological processes relevant to those contexts.