Cited by 387Microtubule and mitosis dynamicsCancer Treatment and PharmacologyCellular Mechanics and Interactions

Mammalian end binding proteins control persistent microtubule growth

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Komarova, Yulia, De Groot, Christian O., Grigoriev, Ilya, Gouveia, Susana Montenegro, Munteanu, E. Laura, Schober, Joseph M., Honnappa, Srinivas, Buey, Rubén M. +5 more·2009·Journal of Cell Biology

Abstract

End binding proteins (EBs) are highly conserved core components of microtubule plus-end tracking protein networks. Here we investigated the roles of the three mammalian EBs in controlling microtubule dynamics and analyzed the domains involved. Protein depletion and rescue experiments showed that EB1 and EB3, but not EB2, promote persistent microtubule growth by suppressing catastrophes. Furthermore, we demonstrated in vitro and in cells that the EB plus-end tracking behavior depends on the calponin homology domain but does not require dimer formation. In contrast, dimerization is necessary for the EB anti-catastrophe activity in cells; this explains why the EB1 dimerization domain, which disrupts native EB dimers, exhibits a dominant-negative effect. When microtubule dynamics is reconstituted with purified tubulin, EBs promote rather than inhibit catastrophes, suggesting that in cells EBs prevent catastrophes by counteracting other microtubule regulators. This probably occurs through their action on microtubule ends, because catastrophe suppression does not require the EB domains needed for binding to known EB partners.

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Authors
Komarova, Y., De Groot, C. O., Grigoriev, I., Gouveia, S. M., Munteanu, E. L., Schober, J. M., Honnappa, S., Buey, R. M., Hoogenraad, C. C., Dogterom, M., Borisy, G. G., Steinmetz, M. O., & Akhmanova, A.
Affiliations
  • Northwestern University (US)
  • Biomolecular Research, Structural Biology, Paul Scherrer Insititut, CH-5232 Villigen PSI, Switzerland 2
  • Erasmus MC (NL)
  • Institute for Atomic and Molecular Physics (NL)
  • Paul Scherrer Institute (CH)
Corresponding author
Akhmanova, Anna
Venue
Journal of Cell Biology
Published
2009-03-02
Volume
184
Issue
5
Pages
691-706
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2099220194
Cited by
387
References
49
Citations by year
2026: 10 · 2025: 12 · 2024: 14 · 2023: 22 · 2022: 19 · 2021: 20 · 2020: 14 · 2019: 14 · 2018: 17 · 2017: 26 · 2016: 25 · 2015: 30 · 2014: 32 · 2013: 25 · 2012: 35
FWCI
15.87
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)
  • AMOLF Institutional Repository (AMOLF) (submittedVersion)
  • DORA PSI (Paul Scherrer Institute) (submittedVersion, other-oa)
  • EUR Research Repository (Erasmus University Rotterdam) (submittedVersion)
  • Open Access Server of the Woods Hole Scientific Community (Woods Hole Scientific Community) (submittedVersion, cc-by-nc-sa)
Funders
  • National Science Foundation
  • Ariad Pharmaceuticals
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung (109423, 3100A0)
  • National Institutes of Health
  • University of California, San Diego
  • RIKEN
  • National Institute of General Medical Sciences (GM 25062, R37GM025062, R01GM025062)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Health Sciences › Medicine › Oncology › Cancer Treatment and Pharmacology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
Keywords
end-binding proteins, EB1, EB3, microtubule plus-end tracking, microtubule dynamics, microtubule catastrophe, calponin homology domain, protein dimerization, dominant negative effect
MeSH terms
Animals, Cell Differentiation, Cricetulus, Cricetinae, Humans, Microtubule-Associated Proteins, Microtubules, CHO Cells, Protein Structure, Tertiary, Dimerization, Protein Multimerization

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