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Published on: November 8, 2006
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Substrates of the MAPK Slt2: Shaping Yeast Cell Integrity
Gema González-Rubio1, Lucía Sastre-Vergara1, María Molina1
1Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad Complutense de Madrid, and Instituto Ramón y Cajal de Investigaciones Sanitarias (IRYCIS), 28040 Madrid, Spain.
Journal of Fungi (Basel, Switzerland)
|April 21, 2022
Summary
The cell wall integrity (CWI) MAPK pathway in yeast, regulated by Slt2, has diverse roles beyond cell wall damage. This review details Slt2 substrates and their functions in maintaining yeast cell integrity.
Area of Science:
- Cell Biology
- Molecular Biology
- Yeast Genetics
Background:
- The cell wall integrity (CWI) MAPK pathway in *Saccharomyces cerevisiae* responds to cell wall damage.
- This pathway, primarily regulated by the MAPK Slt2, exhibits functional diversity under various stress conditions.
- Slt2 activity is crucial for yeast physiology, including signaling, transcriptional regulation, cell cycle control, and organelle fate.
Purpose of the Study:
- To review methods used to identify Slt2-phosphorylated proteins.
- To summarize known and candidate substrates of the Slt2 MAPK.
- To discuss the role of Slt2-mediated phosphorylation in maintaining yeast cell integrity.
Main Methods:
- Recapitulation of methods for discovering Slt2 substrates.
- Review of literature on bona fide and candidate Slt2 substrates.
- Analysis of large-scale datasets and available methodologies.
Main Results:
- Slt2 phosphorylates various protein substrates, modulating their activity, stability, interactions, and localization.
- A comprehensive list of confirmed and potential Slt2 substrates is presented.
- The phosphorylation events by Slt2 are key to yeast cell integrity.
Conclusions:
- The CWI MAPK pathway, particularly Slt2, plays a multifaceted role in yeast stress response and cell physiology.
- Understanding Slt2 substrates is essential for deciphering its regulatory mechanisms.
- Future research directions include identifying new Slt2 substrates and functions through advanced analyses.
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