Pseudo-spin model for the microtubule wall in external field |
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Authors: | Chen Ying Qiu Xi-Jun Dong Xian-Lin |
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Institution: | Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, PR China. siyuyingying@hotmail.com |
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Abstract: | Microtubules (MTs) in the cytoskeletons of eukaryotic cells provide a wide range of microskeletal and micromuscular functionalities. Some evidence has indicated that they can serve as a medium for intracellular signaling processing. In this paper, for the inherent symmetry structures and the electric properties of tubulin dimers, the microtubule (MT) is treated as a one-dimensional ferroelectric system. The nonlinear dynamics of the dimer electric dipoles is described by virtue of the double-well potential and the physical problem is further mapped onto the pseudo-spin system. In addition, the effect of the external electric field on the MT has been taken into account. |
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