Septins and Microtubules in Yeast During Nutritional Limitation
Author Information
Author(s): Pablo-Hernando M Evangelina, Arnaiz-Pita Yolanda, Tachikawa Hiroyuki, del Rey Francisco, Neiman Aaron M, Vázquez de Aldana Carlos R
Primary Institution: Instituto de Microbiología Bioquímica, Departamento de Microbiología y Genética, CSIC/Universidad de Salamanca
Hypothesis
Nutrient limitation triggers the relocalization of septins to microtubules in Saccharomyces cerevisiae.
Conclusion
Nutrient limitation in S. cerevisiae triggers the sporulation process and induces the disassembly of the septin bud neck ring, leading to their relocalization to microtubules and later to the nascent prospore membranes.
Supporting Evidence
- Nutrient limitation causes septins to move from the bud neck to microtubules.
- Septins remain associated with microtubules during meiotic divisions.
- Cdc11 localization to microtubules occurs shortly after transfer to sporulation medium.
Takeaway
When yeast cells don't have enough food, they change how their proteins are organized, moving some proteins called septins to help with making spores.
Methodology
The study used immunofluorescence and immunoprecipitation techniques to analyze septin localization during meiosis in yeast cells under different nutritional conditions.
Limitations
The study does not explore the exact nature of the nutritional signal that triggers septin relocalization.
Digital Object Identifier (DOI)
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