步进过程中驱动蛋白分子扭曲的测定

Basudev Roy, Avin Ramaiya, E. Schäffer
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引用次数: 0

摘要

运动蛋白分子以8纳米的步长在微管上“行走”。通常,人们认为在运动过程中不会扭曲。正是在这方面,我们使用双折射液晶材料RM257微球(默克)在运动过程中将其置于交叉偏振器下进行探测,并使用光学微量角器,使用光学镊子检测步进过程中驱动蛋白分子产生的扭曲和扭矩。
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Determination of twisting of kinesin molecules during stepping
Kinesin molecules “walk” on microtubules with 8 nm steps. Typically, it is believed to not twist during the motilty. It is this very aspect that we probe using birefringent microspheres of liquid crystalline material RM257 (Merck) upon placing them under crossed polarizers during motility and also using the Optical Micro-Protractor that uses the optical tweezers and detect the twist and the torque generated by the kinesin molecules during stepping.
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Niederländische Botschaft / Netherlands Embassy Berlin, DE Timmerhuis Rotterdam, NL Design Museum London, GB Blox Kopenhagen / Copenhagen, DK Casa da Música Porto, PT
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