Deformation and cleavage of microtubules studied with optical tweezers

[in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]; [in Chinese]

Chinese Optics Letters, Volume. 3, Issue 0s, 26(2005)

[in Chinese]¹, [in Chinese]¹, [in Chinese]², [in Chinese]¹, [in Chinese]², [in Chinese]¹, [in Chinese]¹, and [in Chinese]¹

Author Affiliations

¹Optical Physics Laboratory, Institute of Physics, Chinese Academy of Sciences, Beijing 100080

²State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing 100094

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The mechanical properties of fluorescent microtubules (MTs) are probed with dual-optical tweezers system. The results indicate that the fluorescent MTs are much easier to be extended compared with those without fluorescence. Such MT can be extended by 30% and force for breaking up it is only several piconewtons. Furthermore, we find that the breakup of the protofilaments is not simultaneous but step-by-step. Finally, the mechanism of the breaking is discussed.

Keywords

140.7010 170.1420 020.7010

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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese], "Deformation and cleavage of microtubules studied with optical tweezers," Chin. Opt. Lett. 3, 26 (2005)

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Paper Information

Received: --

Accepted: --

Published Online: Mar. 5, 2007

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Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology