Excitation of vibrations in microtubules in living cells
Jazyk angličtina Země Nizozemsko Médium print
Typ dokumentu časopisecké články, práce podpořená grantem, přehledy
PubMed
15110296
DOI
10.1016/j.bioelechem.2003.09.028
PII: S1567539404000581
Knihovny.cz E-zdroje
- MeSH
- biologické modely * MeSH
- elektromagnetická pole MeSH
- guanosindifosfát metabolismus MeSH
- guanosintrifosfát metabolismus MeSH
- hydrolýza MeSH
- lidé MeSH
- mikrotubuly fyziologie ultrastruktura MeSH
- přenos energie fyziologie MeSH
- pružnost MeSH
- vibrace MeSH
- viskozita MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- přehledy MeSH
- Názvy látek
- guanosindifosfát MeSH
- guanosintrifosfát MeSH
Microtubules, which are thought to be the primary organizers of the cytoskeleton, are electrical polar structures with extraordinary elastic deformability at low stress and with energy supply from hydrolysis of guanosine triphosphate (GTP) to guanosine diphosphate (GDP). At least a part of the energy supplied from hydrolysis can excite vibrations. Energy is mainly lost by viscous damping of the surrounding cytosol. Viscous damping is diminished by a slip layer which is formed by an attracted ionic charge layer and by a thin surface layer of the microtubule. Relaxation time caused by viscous damping may be several orders of magnitude greater than period of vibrations at 10 MHz. Energy supplied to the microtubule is of the order of magnitude of 10(-14) W cm(-1) (per unit length of the microtubule).
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