Polarity Sorting in a Bundle of Actin Filaments by Two-Headed Myosins
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概要
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A theoretical model is presented for sorting of the polarity of actin filaments in the presenceof actin-activated ATP-hydrolysis of two-headed myosin (heavy meromyosin, HMIVI). In methyl-cellulose aqueous solution, actin filaments form a nonpolar bundlelike aggregate. Upon additionof HMIVI and ATP to this, the HNIlV[-driven mutual sliding of the actin filaments is known tolead to gradual segregation of the filaments according to their polarity directions, as well as tocontraction of the length of the bundle. We found crucial role of frictional drag between theactin filaments, which is not mediated by active sliding force of the two-headed myosins. Weshow why regions of actins with sorted polarity emerge and how they undergo coarsening in thepresence of frictional drag between filaments.
- 社団法人日本物理学会の論文
- 1996-08-15
著者
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SEKIMOTO Ken
Yukawa Institute for THeoretical Physics,Kyoto University
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Sekimoto Ken
Yukawa Institute For Theoretical Physics Kyoto University
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