title: Electric field generated by axial longitudinal vibration modes of microtubule.
abstract: Microtubules are electrically polar structures fulfilling prerequisites for generation of oscillatory electric field in the kHz to GHz region. Energy supply for excitation of elasto-electrical vibrations in microtubules may be provided from GTP-hydrolysis; motor protein-microtubule interactions; and energy efflux from mitochondria. We calculated electric field generated by axial longitudinal vibration modes of microtubules for random, and coherent excitation. In case of coherent excitation of vibrations, the electric field intensity is highest at the end of microtubule. The dielectrophoretic force exerted by electric field on the surrounding molecules will influence the kinetics of microtubule polymerization via change in the probability of the transport of charge and mass particles. The electric field generated by vibrations of electrically polar cellular structures is expected to play an important role in biological self-organization.
authors.affiliation: Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic, Czech Republic. cifra@ufe.cz <cifra@ufe.cz>
authors.forename: M
authors.initials: M
authors.lastname: Cifra
authors.forename: J
authors.initials: J
authors.lastname: Pokorný
authors.forename: D
authors.initials: D
authors.lastname: Havelka
authors.forename: O
authors.initials: O
authors.lastname: Kucera
mesh_terms: D001683:Biological Clocks / Q000502:physiology; D016764:Cell Polarity / Q000502:physiology*; D004574:Electromagnetic Fields; D005057:Eukaryotic Cells / Q000502:physiology*; D008870:Microtubules / Q000502:physiology*; D011897:Random Allocation; D014732:Vibration; D015002:Yeast, Dried