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Spatiotemporal Analysis of Cytokinetic Events in Fission Yeast
Published on: February 20, 2017
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Syntaxin 16 is a master recruitment factor for cytokinesis.
Hélia Neto1, Alexandra Kaupisch, Louise L Collins
1Henry Wellcome Laboratory of Cell Biology, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, United Kingdom.
Molecular Biology of the Cell
|October 11, 2013
Summary
Syntaxin 16 is crucial for cell division (cytokinesis). It coordinates the delivery of key protein complexes, linking membrane trafficking and cell division for successful completion.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Cytokinesis requires recycling endosome and endosomal sorting complex required for transport (ESCRT) components.
- The precise targeting and coordination of these components to the midbody remain unclear.
- The role of intracellular SNAREs in membrane trafficking during cytokinesis is not well understood.
Purpose of the Study:
- To investigate the mechanism of recycling endosome and ESCRT machinery recruitment during cytokinesis.
- To identify the role of intracellular SNAREs in coordinating these events.
- To determine if membrane trafficking pathways are linked to ESCRT-mediated abscission.
Main Methods:
- Utilized molecular biology techniques to study protein localization and function.
- Investigated the role of syntaxin 16 in cytokinesis using genetic and cell imaging approaches.
- Examined the recruitment of Exocyst and ESCRT components in syntaxin 16 mutants.
Main Results:
- Syntaxin 16 is essential for the recruitment of both recycling endosome-associated Exocyst and ESCRT machinery.
- Syntaxin 16 acts as a key regulator, linking these two distinct pathways.
- The delivery of Exocyst and ESCRT complexes to the midbody is coordinated by syntaxin 16.
Conclusions:
- Syntaxin 16 is a critical regulator of cytokinesis.
- It plays a central role in coordinating membrane trafficking and ESCRT-dependent abscission.
- These findings establish an inextricable link between recycling endosome pathways and the terminal stages of cell division.
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