Cited by 344Microtubule and mitosis dynamicsAlzheimer's disease research and treatmentsCellular transport and secretion

Tau regulates the attachment/detachment but not the speed of motors in microtubule-dependent transport of single vesicles and organelles

Trinczek, B., Ebneth, A., Mandelkow, E.-M., Mandelkow, E.·1999·Journal of Cell Science

Abstract

We have performed a real time analysis of fluorescence-tagged vesicle and mitochondria movement in living CHO cells transfected with microtubule-associated protein tau or its microtubule-binding domain. Tau does not alter the speed of moving vesicles, but it affects the frequencies of attachment and detachment to the microtubule tracks. Thus, tau decreases the run lengths both for plus-end and minus-end directed motion to an equal extent. Reversals from minus-end to plus-end directed movement of single vesicles are strongly reduced by tau, but reversals in the opposite direction (plus to minus) are not. Analogous effects are observed with the transport of mitochondria and even with that of vimentin intermediate filaments. The net effect is a directional bias in the minus-end direction of microtubules which leads to the retraction of mitochondria or vimentin IFs towards the cell center. The data suggest that tau can control intracellular trafficking by affecting the attachment and detachment cycle of the motors, in particular by reducing the attachment of kinesin to microtubules, whereas the movement itself is unaffected.

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Crossref · 10.1242/jcs.112.14.2355

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Authors
Trinczek, B., Ebneth, A., Mandelkow, E.-M., & Mandelkow, E.
Affiliations
  • Max Planck Unit for Structural Molecular Biology (DE)
  • Max-Planck Unit for Structural Molecular Biology, Notkestrasse 85, D-22607 Hamburg, Germany
Corresponding author
  • Trinczek, B.
  • Ebneth, A.
Venue
Journal of Cell Science
Published
1999-07-15
Volume
112
Issue
14
Pages
2355-2367
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2153578959
Cited by
344
References
2
Citations by year
2026: 5 · 2025: 8 · 2024: 5 · 2023: 10 · 2022: 6 · 2021: 9 · 2020: 10 · 2019: 14 · 2018: 12 · 2017: 15 · 2016: 20 · 2015: 16 · 2014: 21 · 2013: 11 · 2012: 14
FWCI
4.78
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
tau protein, microtubule transport, kinesin, vesicle trafficking, mitochondrial transport, vimentin intermediate filaments, intracellular trafficking, run length, directional bias, microtubule-binding domain, CHO cells
MeSH terms
Animals, Binding Sites, Biological Transport, Active, Exocytosis, Fluorescent Dyes, Cricetinae, Humans, Intermediate Filaments, Microtubules, Movement, Peptide Fragments, Recombinant Proteins, Transfection, Vimentin, Organelles, CHO Cells, Kinesins, tau Proteins, Molecular Motor Proteins

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