Cited by 919Microtubule and mitosis dynamicsGenetic and Kidney Cyst DiseasesCancer Treatment and Pharmacology

Microtubule Acetylation Promotes Kinesin-1 Binding and Transport

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Reed, Nathan A., Cai, Dawen, Blasius, T. Lynne, Jih, Gloria T., Meyhofer, Edgar, Gaertig, Jacek, Verhey, Kristen J.·2006·Current Biology

Abstract

Long-distance intracellular delivery is driven by kinesin and dynein motor proteins that ferry cargoes along microtubule tracks . Current models postulate that directional trafficking is governed by known biophysical properties of these motors-kinesins generally move to the plus ends of microtubules in the cell periphery, whereas cytoplasmic dynein moves to the minus ends in the cell center. However, these models are insufficient to explain how polarized protein trafficking to subcellular domains is accomplished. We show that the kinesin-1 cargo protein JNK-interacting protein 1 (JIP1) is localized to only a subset of neurites in cultured neuronal cells. The mechanism of polarized trafficking appears to involve the preferential recognition of microtubules containing specific posttranslational modifications (PTMs) by the kinesin-1 motor domain. Using a genetic approach to eliminate specific PTMs, we show that the loss of a single modification, alpha-tubulin acetylation at Lys-40, influences the binding and motility of kinesin-1 in vitro. In addition, pharmacological treatments that increase microtubule acetylation cause a redirection of kinesin-1 transport of JIP1 to nearly all neurite tips in vivo. These results suggest that microtubule PTMs are important markers of distinct microtubule populations and that they act to control motor-protein trafficking.

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Crossref · 10.1016/j.cub.2006.09.014

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Authors
Reed, N. A., Cai, D., Blasius, T. L., Jih, G. T., Meyhofer, E., Gaertig, J., & Verhey, K. J.
Affiliations
  • University of Michigan (US)
  • University of Georgia (US)
Corresponding author
Verhey, Kristen J.
Venue
Current Biology
Publisher
Elsevier BV
Published
2006-11
Volume
16
Issue
21
Pages
2166-2172
ISSN
0960-9822 (ISSN-L)
OpenAlex
W2046746554
Cited by
919
References
5
Citations by year
2026: 17 · 2025: 42 · 2024: 38 · 2023: 49 · 2022: 36 · 2021: 46 · 2020: 56 · 2019: 46 · 2018: 45 · 2017: 49 · 2016: 53 · 2015: 50 · 2014: 57 · 2013: 58 · 2012: 57
FWCI
15.74
Type
journal article
Language
en
Open access
Locations
  • Current Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Science Foundation (MCB-0235826)
  • National Institutes of Health (GM070862)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic and Kidney Cyst Diseases
  • Health Sciences › Medicine › Oncology › Cancer Treatment and Pharmacology
Keywords
microtubule acetylation, kinesin-1, alpha-tubulin acetylation, post-translational modification, JIP1, neuronal transport, intracellular transport
MeSH terms
Acetylation, Animals, Bacterial Proteins, Chlorocebus aethiops, Drosophila, Dyneins, HeLa Cells, Humans, Luminescent Proteins, Microtubules, Neurons, Protein Binding, Protein Processing, Post-Translational, Tetrahymena, Tubulin, Neurites, Kinesins, Protein Structure, Tertiary, COS Cells, Protein Transport, Adaptor Proteins, Signal Transducing, Mice, Rats

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