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Published on: August 10, 2021
Msi1-Like (MSIL) Proteins in Fungi
Dong-Hoon Yang1, Shinae Maeng, Yong-Sun Bahn
1Department of Biotechnology, Center for Fungal Pathogenesis, College of Life Science and Biotechnology, Yonsei University, Seoul 120-749, Korea.
Abstract:
Msi1-like (MSIL) proteins, which are eukaryote-specific and contain a series of WD40 repeats, have pleiotropic roles in chromatin assembly, DNA damage repair, and regulation of nutrient/stress-sensing signaling pathways. In the fungal kingdom, the functions of MSIL proteins have been studied most intensively in the budding yeast model Saccharomyces cerevisiae, an ascomycete. Yet their functions are largely unknown in other fungi. Recently, an MSIL protein, Msl1, was discovered and functionally characterized in the pathogenic yeast Cryptococcus neoformans, a basidiomycete. Interestingly, MSIL proteins appear to have redundant and unique roles in both fungi, suggesting that MSIL proteins may have evolutionarily divergent roles in different parts of the fungal kingdom. In this review, we will describe the current findings regarding the role of MSIL proteins in fungi and discuss future directions for research on this topic.
Insights
Msi1-like (MSIL) proteins have diverse roles in eukaryotes. This review explores their functions in fungi, highlighting unique and redundant roles across different fungal species.
Area of Science:
- Molecular Biology
- Mycology
- Genetics
Background:
- Msi1-like (MSIL) proteins are eukaryote-specific, characterized by WD40 repeats.
- These proteins are involved in chromatin assembly, DNA repair, and nutrient/stress signaling.
- MSIL protein functions are well-studied in Saccharomyces cerevisiae but largely unknown in other fungi.
Purpose of the Study:
- To review current findings on MSIL protein functions in fungi.
- To discuss the evolutionary divergence of MSIL proteins across fungal lineages.
- To identify future research directions for fungal MSIL proteins.
Main Methods:
- Literature review of existing studies on MSIL proteins in fungi.
- Comparative analysis of MSIL protein functions in ascomycetes (e.g., S. cerevisiae) and basidiomycetes (e.g., C. neoformans).
Main Results:
- MSIL proteins exhibit both conserved and unique functions across different fungal groups.
- Functional characterization of Msl1 in Cryptococcus neoformans reveals basidiomycete-specific roles.
- Evidence suggests evolutionary divergence in MSIL protein functions within the fungal kingdom.
Conclusions:
- MSIL proteins play critical, yet divergent, roles in fungal biology.
- Further research is needed to elucidate the specific functions and evolutionary trajectories of MSIL proteins in understudied fungal phyla.
- Understanding fungal MSIL proteins can provide insights into eukaryotic cellular processes.
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