Cited by 873Microtubule and mitosis dynamicsGenetic and Kidney Cyst DiseasesCancer Treatment and Pharmacology

Microtubules containing acetylated alpha-tubulin in mammalian cells in culture.

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Piperno, G, LeDizet, M, Chang, X J·1987·The Journal of cell biology

Abstract

The subcellular distribution of microtubules containing acetylated alpha-tubulin in mammalian cells in culture was analyzed with 6-11B-1, a monoclonal antibody specific for acetylated alpha-tubulin. Cultures of 3T3, HeLa, and PtK2 cells were grown on coverslips and observed by immunofluorescence microscopy after double-staining by 6-11B-1 and B-5-1-2, a monoclonal antibody specific for all alpha-tubulins. The antibody 6-11B-1 binds to primary cilia, centrioles, mitotic spindles, midbodies, and to subsets of cytoplasmic microtubules in 3T3 and HeLa cells, but not in PtK2 cells. These observations confirm that the acetylation of alpha-tubulin is a modification occurring in different microtubule structures and in a variety of eukaryotic cells. Some features of the acetylation of cytoplasmic microtubules of mammalian cells are also described here. First, acetylated alpha-tubulin is present in microtubules that, under depolymerizing conditions, are more stable than the majority of cytoplasmic microtubules. In addition to the specific microtubule frameworks already mentioned, cytoplasmic microtubules resistant to nocodazole or colchicine, but not cold-resistant microtubules, contain more acetylated alpha-tubulin than the rest of cellular microtubules. Second, the alpha-tubulin in all cytoplasmic microtubules of 3T3 and HeLa cells becomes acetylated in the presence of taxol, a drug that stabilizes microtubules. Third, acetylation and deacetylation of cytoplasmic microtubules are reversible in cells released from exposure to 0 degrees C or antimitotic drugs. Fourth, the epitope recognized by the antibody 6-11B-1 is not absolutely necessary for cell growth and division. This epitope is absent in PtK2 cells. The acetylation of alpha-tubulin could regulate the presence of microtubules in specific intracellular spaces by selective stabilization.

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Authors
Piperno, G., LeDizet, M., & Chang, X. J.
Affiliations
Rockefeller University (US)
Venue
The Journal of cell biology
Published
1987-02-01
Volume
104
Issue
2
Pages
289-302
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2155768517
Cited by
873
References
13
Citations by year
2026: 15 · 2025: 18 · 2024: 23 · 2023: 27 · 2022: 19 · 2021: 30 · 2020: 24 · 2019: 29 · 2018: 32 · 2017: 28 · 2016: 28 · 2015: 34 · 2014: 33 · 2013: 34 · 2012: 36
FWCI
15.45
Type
journal article
Language
en
Open access
Locations
  • The Journal of Cell Biology (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
  • National Institute of General Medical Sciences (GM28702)
  • National Center for Research Resources (S07 RR077065)
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
acetylated alpha-tubulin, alpha-tubulin acetylation, microtubules, cytoplasmic microtubules, primary cilia, centrioles, mitotic spindle, midbody, microtubule stabilization, paclitaxel, nocodazole, colchicine, deacetylation, 3T3 fibroblasts, HeLa cells, PtK2 cells
MeSH terms
Acetylation, Alkaloids, Animals, Cell Line, Cells, Cultured, Cold Temperature, Fluorescent Antibody Technique, HeLa Cells, Humans, Kinetics, Microtubules, Tubulin, Paclitaxel, Mice

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