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Related Concept Videos

Microtubule Associated Motor Proteins01:32

Microtubule Associated Motor Proteins

Eukaryotic cells have different motor proteins for transporting various cargo within the cell. These motor proteins differ based on the filament they associate with, the direction they move within the cell, and the type of cargo they transport. Motor proteins that associate with microtubules are known as microtubule-associated motor proteins. There are two families of microtubule-associated motor proteins —Kinesins and Dyneins. Both these proteins assist in the transport of cellular cargos...
Motor Units00:46

Motor Units

A motor unit consists of two main components: a single efferent motor neuron (i.e., a neuron that carries impulses away from the central nervous system) and all of the muscle fibers it innervates. The motor neuron may innervate multiple muscle fibers, which are single cells, but only one motor neuron innervates a single muscle fiber.
Motor Units01:13

Motor Units

The motor unit is a fundamental component of the neuromuscular system and plays a crucial role in coordinating muscle contractions. It consists of a somatic motor neuron, which connects and controls multiple skeletal muscle fibers, forming a single functional segment. The axon of the motor neuron branches out and establishes synaptic connections known as neuromuscular junctions with individual muscle fibers within the motor unit.
Motor units come in different sizes, with smaller units...
Electro-mechanical Systems01:19

Electro-mechanical Systems

Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
The Movement of Organelles and Vesicles01:43

The Movement of Organelles and Vesicles

In eukaryotic cells,  cytoskeletal filaments such as actin, microtubules, and intermediate filaments form a mesh-like cytoskeletal network. These filaments serve as tracks for transporting cellular cargo. Specialized motor proteins use the chemical energy stored in adenosine triphosphate (ATP) for this transport. During interphase, microtubules are polarized, with the plus-end towards the cell periphery and the minus-end towards the cell center. Two microtubule-associated motor proteins,...

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Related Experiment Video

Updated: Jun 8, 2026

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

An all-electric single-molecule motor.

Johannes S Seldenthuis1, Ferry Prins, Joseph M Thijssen

  • 1Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands. j.s.seldenthuis@tudelft.nl

ACS Nano
|October 13, 2010
PubMed
Summary
This summary is machine-generated.

We developed a novel molecular motor controlled by electric fields and detected by electric current. This all-electronic design allows precise control over molecular motion for advanced nanotechnology applications.

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Single-Molecule Analysis of Sf9 Purified Superprocessive Kinesin-3 Family Motors
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Last Updated: Jun 8, 2026

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging
08:40

Light-driven Molecular Motors on Surfaces for Single Molecular Imaging

Published on: March 13, 2019

Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation
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Production of Dynein and Kinesin Motor Ensembles on DNA Origami Nanostructures for Single Molecule Observation

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08:16

Single-Molecule Analysis of Sf9 Purified Superprocessive Kinesin-3 Family Motors

Published on: July 27, 2022

Area of Science:

  • Molecular nanotechnology
  • Single-molecule electronics
  • Quantum chemistry

Background:

  • Various molecular motors exist, driven by light, heat, or chemicals.
  • Existing designs have limitations in control and detection.

Purpose of the Study:

  • To propose and analyze a new molecular motor design.
  • To achieve electrical control and detection of molecular rotational motion.

Main Methods:

  • Utilizing quantum chemistry calculations.
  • Designing a three-terminal single-molecule device.
  • Employing a conjugated molecular backbone for actuation and detection.

Main Results:

  • Demonstrated full control over motor speed and motion continuity.
  • Showcased electrical and mechanical control at the molecular level.
  • Confirmed functionality across a range of temperatures.

Conclusions:

  • The proposed all-electronic molecular motor offers precise control via electric fields and current detection.
  • The design enables tunable molecular motor performance through chemical modifications.
  • This advancement opens new avenues for molecular machinery and nanotechnology research.