Cited by 253Microtubule and mitosis dynamicsNeurogenesis and neuroplasticity mechanismsCancer Treatment and Pharmacology

An Essential Role for Katanin in Severing Microtubules in the Neuron

Open access
Ahmad, Fridoon J., Yu, Wenqian, McNally, Francis J., Baas, Peter W.·1999·The Journal of Cell Biology

Abstract

Several lines of evidence suggest that microtubules are nucleated at the neuronal centrosome, and then released for transport into axons and dendrites. Here we sought to determine whether the microtubule-severing protein known as katanin mediates microtubule release from the neuronal centrosome. Immunomicroscopic analyses on cultured sympathetic neurons show that katanin is present at the centrosome, but is also widely distributed throughout the neuron. Microinjection of an antibody that inactivates katanin results in a dramatic accumulation of microtubules at the centrosome, indicating that katanin is indeed required for microtubule release from the centrosome. However, the antibody also causes an inhibition of axon outgrowth that is more immediate than expected on this basis alone. It may be that katanin severs microtubules throughout the cell body to keep them sufficiently short to be efficiently transported into developing processes. Consistent with this idea, there were significantly fewer free ends of microtubules in the cell bodies of neurons that had been injected with the katanin antibody compared with controls. These results indicate that microtubule-severing by katanin is essential for releasing microtubules from the neuronal centrosome, and also for regulating the length of the microtubules after their release.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1083/jcb.145.2.305

Cites

21 of 21 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Some microtubule-related genes associated with axonal transport and known to play a role in post-mitotic neural wiring and plasticity are associated with signals of positive selection, such as KIF18A or KATNA1.

    “Some of the aforementioned microtubule-related genes, specifically those associated with axonal transport and known to play a role in post-mitotic neural wiring and plasticity93, are associated with signals of positive selection, such as KIF18A94 or KATNA195,96.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Ahmad, F. J., Yu, W., McNally, F. J., & Baas, P. W.
Affiliations
University of Wisconsin–Madison (US)
Corresponding author
Yu, Wenqian
Venue
The Journal of Cell Biology
Published
1999-04-19
Volume
145
Issue
2
Pages
305-315
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2066803550
Cited by
253
References
21
Citations by year
2026: 5 · 2025: 7 · 2024: 8 · 2023: 8 · 2022: 9 · 2021: 6 · 2020: 13 · 2019: 13 · 2018: 8 · 2017: 8 · 2016: 12 · 2015: 8 · 2014: 10 · 2013: 6 · 2012: 14
FWCI
4.01
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Oncology › Cancer Treatment and Pharmacology
Keywords
katanin, microtubule severing, axon growth, microtubule length regulation, microtubule transport, sympathetic neurons, microtubule ends
MeSH terms
Katanin, Adenosine Triphosphatases, Animals, Animals, Newborn, Axons, Cells, Cultured, Ganglia, Sympathetic, Microscopy, Electron, Microtubules, Neurons, Trimethoprim, Sulfamethoxazole Drug Combination, Microscopy, Immunoelectron, Centrosome, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review