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Updated: Jul 19, 2026
09:09
Bottom-Up In Vitro Methods to Assay the Ultrastructural Organization, Membrane Reshaping, and Curvature Sensitivity Behavior of Septins
Published on: August 17, 2022
Resolving polarized views: septin filaments do the twist.
Jonathan D Steels1, William S Trimble
1Program in Cell Biology, Hospital for Sick Children and Department of Biochemistry, University of Toronto, 555 University Avenue, Toronto, M5G 1X8, Canada.
Developmental Cell
|November 7, 2006
Summary
Septins, essential proteins for cell division, exhibit dynamic filament rotation during the cell splitting process. This rotation is crucial for the proper functioning of the septin ring during cytokinesis.
Area of Science:
- Cell Biology
- Molecular Biology
- Biophysics
Background:
- Septins are conserved GTPases vital for eukaryotic cell division.
- Their filamentous structure plays a key role in cellular processes.
Purpose of the Study:
- To investigate the dynamic behavior of septin filaments during cytokinesis.
- To elucidate the structural rearrangements of the septin ring.
Main Methods:
- Utilized polarized fluorescence microscopy.
- Observed septin filament dynamics in real-time.
Main Results:
- Demonstrated that septin filaments undergo a coordinated rotation.
- Showed filaments transition from longitudinal to circumferential orientation.
- Observed this rotation coincides with septin ring splitting during cytokinesis.
Conclusions:
- Septin filament rotation is a highly orchestrated event.
- This dynamic rearrangement is essential for successful cytokinesis.
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