ArticleMolecular biology of the cell2019
Actin turnover ensures uniform tension distribution during cytokinetic actomyosin ring contraction.
Article in Molecular biology of the cell, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Review
- A mechanical ratchet drives unilateral cytokinesis.Nature · 2026Article
- RhoA-ROCK2 signaling possesses complex pathophysiological functions in cancer progression and shows promising therapeutic potential.Cancer cell international · 2024Review
- Actin turnover protects the cytokinetic contractile ring from structural instability.Journal of cell science · 2023Article
- Myosin turnover controls actomyosin contractile instability.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Coro1B and Coro1C regulate lamellipodia dynamics and cell motility by tuning branched actin turnover.The Journal of cell biology · 2022Article
- Counting actin in contractile rings reveals novel contributions of cofilin and type II myosins to fission yeast cytokinesis.Molecular biology of the cell · 2022Article
- Negative control of cytokinesis by stress-activated MAPK signaling.Current genetics · 2021Review
- Evolutionarily diverse LIM domain-containing proteins bind stressed actin filaments through a conserved mechanism.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Microtubule nucleation promoters Mto1 and Mto2 regulate cytokinesis in fission yeast.Molecular biology of the cell · 2020Article
- Comparative Analysis of the Roles of Non-muscle Myosin-IIs in Cytokinesis in Budding Yeast, Fission Yeast, and Mammalian Cells.Frontiers in cell and developmental biology · 2020Review
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3 authors.
Funding
Abstract
In many eukaryotes, cytokinesis is facilitated by the contraction of an actomyosin ring (AMR). The exact mechanisms that lead to this contractility are unknown, although some models posit that actin turnover in the AMR is essential. The effect of reduced actin dynamics during AMR formation has been well studied in Schizosaccharomyces pombe; however, the corresponding effects on AMR contraction are not well understood. By using mutants of the fission yeast actin severing protein Adf1, we observed that contracting AMRs display a "peeling" phenotype, where bundles of actin and myosin peel off from one side of the AMR, and are pulled across to the opposite side. This occurs multiple times during cytokinesis and is dependent on the activity of myosins Myo2, Myp2, and Myo51. We found that the distribution of Myo2 in the AMR anticorrelates with the location of peeling events, suggesting that peeling is caused by a nonuniform tension distribution around the AMR, and that one of the roles of actin turnover is to maintain a uniform tension distribution around the AMR.
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