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Updated: May 2, 2026

Assessment of Submitochondrial Protein Localization in Budding Yeast Saccharomyces cerevisiae
Published on: July 19, 2021
Insight into Tor2, a budding yeast microdomain protein
Katelyn Bartlett1, Kyoungtae Kim1
1Department of Biology, Missouri State University, Springfield, MO 65897, USA.
Abstract:
The plasma membrane of eukaryotic organisms is compartmentalized into microdomains. The budding yeast Saccharomyces cerevisiae presents three laterally distinct microdomains: membrane compartment containing Can1 (MCC), membrane compartment containing Pma1 (MCP), and membrane compartment containing Tor2 (MCT). Tor2 and its corresponding protein complex, target of rapamycin complex 2 (TORC2), has been of particular interest in recent years. Tor2, the main organizer of TORC2, is a highly conserved kinase that has proved to be an important regulator of multiple cellular functions including cell growth, actin polymerization, endocytosis, and sphingolipid synthesis. Despite significant advancements, the full understanding of the Tor2 signaling networks is incomplete. Here we review the most compelling evidences for the function and physiological significance of Tor2, as well as discuss possible implications and explanations for observed phenomena.
Insights
The Tor2 kinase and its complex (TORC2) regulate key yeast cell functions like growth and actin polymerization. Further research is needed to fully understand Tor2 signaling networks.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Eukaryotic plasma membranes are organized into distinct microdomains.
- Budding yeast Saccharomyces cerevisiae exhibits three microdomains: MCC, MCP, and MCT.
- The Tor2 kinase and its complex, TORC2, are crucial regulators of cellular processes.
Purpose of the Study:
- To review current evidence on the function and significance of Tor2.
- To explore the implications and potential explanations for observed Tor2 phenomena.
- To highlight the incomplete understanding of Tor2 signaling networks.
Main Methods:
- Literature review of compelling evidence.
- Analysis of Tor2's role in cellular functions.
- Discussion of physiological significance and signaling pathways.
Main Results:
- Tor2 is a highly conserved kinase and the main organizer of TORC2.
- Tor2 regulates cell growth, actin polymerization, endocytosis, and sphingolipid synthesis.
- Significant advancements have been made, but Tor2 signaling remains incompletely understood.
Conclusions:
- Tor2 plays a vital role in multiple cellular functions in Saccharomyces cerevisiae.
- Further investigation into Tor2 signaling networks is warranted.
- Understanding Tor2's physiological significance is key to advancing cell biology research.
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