Localized Control of the Swarming of Kinesin-Driven Microtubules Using Light.

Area of Science:

• Biophysics
• Molecular Robotics
• Soft Matter Physics

Background:

• Self-propelled cytoskeletal filaments exhibit swarming behavior, presenting opportunities for molecular machines.
• Photoregulated swarming of kinesin-driven microtubule filaments was previously achieved using visible (VIS) and ultraviolet (UV) light for association and dissociation.
• Systematic control is needed to optimize swarming for advanced applications.

Purpose of the Study:

• To demonstrate precise and localized control of a biomolecular motor-based swarm system.
• To investigate the effects of varying photoirradiation parameters on swarm behavior.
• To explore pattern-based regulation of swarming for targeted applications.

Main Methods:

• Controlled swarming by adjusting light wavelength and intensity.
• Modified swarm reversibility by altering the number of azobenzenes in DNA.
• Achieved localized control using patterned UV light irradiation.

Main Results:

• Demonstrated precise control over the association and dissociation of microtubule swarms.
• Showcased the ability to regulate swarm behavior reversibly through light parameters.
• Successfully implemented localized swarming control using patterned light stimuli.

Conclusions:

• Precise and localized control of biomolecular motor swarms is achievable.
• Photoirradiation parameters offer versatile tools for manipulating swarm dynamics.
• This research provides a foundation for developing advanced molecular swarm systems for engineering applications.