Rotary Mechanism
Rotary Mechanism - Related Videos
06:43
Rotary Evaporation to Remove Solvent
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2023
Source: Dr. Melanie Pribisko Yen and Grace Tang — California Institute of Technology Rotary evaporation is a technique most commonly used in organic chemistry to remove a solvent from a higher-boiling point compound of interest. The rotary evaporator, or "rotovap", was invented in 1950 by the chemist Lyman C. Craig. The primary use of a rotovap is to dry and purify samples for downstream applications. Its speed and ability to handle large volumes of solvent make rotary evaporation a preferred...
15:21
Microfabricated Platforms for Mechanically Dynamic Cell Culture
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Cited by 3 •
2010
In this protocol, we demonstrate the fabrication of a microactuator array of vertically displaced posts on which the technology is based, and how this base technology can be modified to conduct high-throughput mechanically dynamic cell culture in both two-dimensional and three-dimensional culture paradigms.
12:45
Mechanical Stimulation of Chondrocyte-agarose Hydrogels
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Cited by 29 •
2012
The biosynthesis of cartilaginous extracellular matrix by chondrocytes can be affected by application of mechanical stimuli. This method describes the technique of applying dynamic compressive strains to chondrocytes encapsulated in 3D constructs and the evaluation of induced changes in chondrocyte metabolism.
09:28
Culturing Lymphocytes in Simulated Microgravity Using a Rotary Cell Culture System
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Cited by 2 •
2022
This is a step-by-step guide for using a commercially available rotary cell culture system to culture lymphocytes in simulated microgravity using specialized disposable culture vessels. This culturing method may be applied to any suspension-type cell culture.
04:18
Methods for Tattooing Xenopus laevis with a Rotary Tattoo Machine
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2024
Here, we describe methods for tattooing adult Xenopus laevis (African clawed frog) with a rotary tattoo machine. Proper tattooing results in dark, easily legible numerals that last for several months and make animals easily distinguishable for research and recordkeeping purposes.
FAQs
A proton gradient across the membrane supplies the energy that drives ATP synthase’s membrane-embedded rotor. As the rotor turns, it rotates a central shaft connected to the F1 region. This mechanical movement changes catalytic sites there, enabling ADP and phosphate to be used for ATP production during the process.
The central shaft links membrane-driven rotation with chemical activity in the F1 region. Rotation transmitted through the shaft changes the configuration of catalytic sites, allowing energy from the proton gradient to influence ATP formation. This connection demonstrates how a molecular machine couples membrane-based mechanical motion to a chemical reaction.
Biological rotary mechanisms share the principle of converting energy into rotational movement, but their outcomes can differ. ATP synthase uses rotation to support ATP production, whereas related rotary systems power bacterial flagella or contribute to transport processes. Comparing these systems helps connect a common mechanical principle with distinct biological functions.
ATP synthase depends on a proton gradient across a membrane, a membrane-embedded rotor, and the F1 region with catalytic sites. ADP and phosphate provide the chemical inputs for ATP formation. Together, these features establish the required relationship between an electrochemical gradient, rotational movement, and synthesis of ATP.
Studies can focus on how electrochemical gradients generate rotation, how the rotor transfers motion through a central shaft, and how that motion changes catalytic sites. Examining these linked events clarifies the operation of ATP synthase and provides a framework for understanding molecular machines involved in cellular energy metabolism.
These systems show how cells connect a proton gradient with both mechanical work and chemical synthesis. In ATP synthase, the connection leads to ATP production from ADP and phosphate. This makes rotary mechanisms relevant to research on energy metabolism because they reveal how molecular movement participates in managing usable cellular energy.
Biological examples provide models for converting an energy gradient into controlled rotational or stepwise motion. ATP synthase is especially informative because its membrane rotor, central shaft, and catalytic region operate as linked components. Studying this arrangement can guide bioinspired engineering aimed at coupling energy conversion with mechanical movement and useful work.