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Updated: Jun 13, 2026
08:13
Manipulation and Analysis of Cell Cycle-Dependent Processes in Budding Yeast
Published on: September 26, 2025
Cell cycle control of spindle elongation.
Johanna Roostalu1, Elmar Schiebel, Anton Khmelinskii
1Zentrum für Molekulare Biologie der Universität Heidelberg, Heidelberg, Germany.
Cell Cycle (Georgetown, Tex.)
|April 23, 2010
Summary
Mitotic chromosome segregation relies on conserved dephosphorylation of proteins like Ase1/PRC1. This microtubule crosslinker regulates spindle elongation and stability, ensuring accurate cell division across eukaryotes.
Area of Science:
- Cell Biology
- Molecular Biology
- Genetics
Background:
- Chromosome segregation is vital for cell division in eukaryotes.
- Mitotic phosphoprotein dephosphorylation is crucial for spindle function and accurate segregation.
- Ase1/PRC1, a microtubule crosslinker, is a key regulator in this process.
Purpose of the Study:
- To explore the role of Ase1/PRC1 as a regulatory platform in the mitotic midzone.
- To discuss how Ase1/PRC1's phosphorylation status controls spindle dynamics.
- To provide a comparative overview of chromosome segregation strategies in model organisms.
Main Methods:
- Comparative analysis of Ase1/PRC1 function across different organisms.
- Review of literature on mitotic phosphoprotein regulation.
- Discussion of molecular mechanisms linking Ase1/PRC1 to spindle functions.
Main Results:
- Ase1/PRC1 acts as a universal target for dephosphorylation control during mitosis.
- Phosphorylation status of Ase1/PRC1 dictates its role in restraining or promoting spindle elongation.
- Ase1/PRC1 integrates spindle stability, elongation, and cytokinesis functions.
Conclusions:
- Ase1/PRC1 serves as a central hub connecting critical midzone functions.
- Conserved regulatory principles govern chromosome segregation, highlighting Ase1/PRC1's importance.
- Understanding Ase1/PRC1 provides insights into accurate cell division mechanisms.
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