Cited by 179Microtubule and mitosis dynamicsHereditary Neurological DisordersCellular transport and secretion

Kinesin Light Chains Are Essential for Axonal Transport in Drosophila

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Gindhart, Joseph G., Desai, Chand J., Beushausen, Sven, Zinn, Kai, Goldstein, Lawrence S.B.·1998·The Journal of Cell Biology

Abstract

Kinesin is a heterotetramer composed of two 115-kD heavy chains and two 58-kD light chains. The microtubule motor activity of kinesin is performed by the heavy chains, but the functions of the light chains are poorly understood. Mutations were generated in the Drosophila gene Kinesin light chain (Klc), and the phenotypic consequences of loss of Klc function were analyzed at the behavioral and cellular levels. Loss of Klc function results in progressive lethargy, crawling defects, and paralysis followed by death at the end of the second larval instar. Klc mutant axons contain large aggregates of membranous organelles in segmental nerve axons. These aggregates, or organelle jams (Hurd, D.D., and W.M. Saxton. 1996. Genetics. 144: 1075-1085), contain synaptic vesicle precursors as well as organelles that may be transported by kinesin, kinesin-like protein 68D, and cytoplasmic dynein, thus providing evidence that the loss of Klc function blocks multiple pathways of axonal transport. The similarity of the Klc and Khc (. Cell 64:1093-1102; Hurd, D.D., and W.M. Saxton. 1996. Genetics 144: 1075-1085) mutant phenotypes indicates that KLC is essential for kinesin function, perhaps by tethering KHC to intracellular cargos or by activating the kinesin motor.

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Authors
Gindhart, J. G., Desai, C. J., Beushausen, S., Zinn, K., & Goldstein, L. S. B.
Affiliations
California Institute of Technology (US)
Venue
The Journal of Cell Biology
Published
1998-04-20
Volume
141
Issue
2
Pages
443-454
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2099198611
Cited by
179
References
105
Citations by year
2026: 4 · 2025: 5 · 2024: 2 · 2023: 2 · 2022: 4 · 2021: 2 · 2020: 2 · 2019: 3 · 2018: 6 · 2017: 9 · 2016: 3 · 2015: 5 · 2014: 8 · 2013: 7 · 2012: 10
FWCI
4.32
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • CaltechAUTHORS (California Institute of Technology) (submittedVersion, cc-by-nc-sa)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Hereditary Neurological Disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
kinesin light chain, axonal transport, kinesin heavy chain, Drosophila, cytoplasmic dynein, cargo binding, paralysis, larval mortality
MeSH terms
Animals, Axonal Transport, Drosophila, Larva, Microtubule-Associated Proteins, Movement, Mutation, Nerve Tissue Proteins, Neurons, Paralysis, Phenotype, Kinesins, Genes, Insect, Animals, Genetically Modified

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