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Published on: October 23, 2016
Membrane traffic related to endosome dynamics and protein secretion in filamentous fungi
1Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan.
Abstract:
In eukaryotic cells, membrane-surrounded organelles are orchestrally organized spatiotemporally under environmental situations. Among such organelles, vesicular transports and membrane contacts occur to communicate each other, so-called membrane traffic. Filamentous fungal cells are highly polarized and thus membrane traffic is developed to have versatile functions. Early endosome (EE) is an endocytic organelle that dynamically exhibits constant long-range motility through the hyphal cell, which is proven to have physiological roles, such as other organelle distribution and signal transduction. Since filamentous fungal cells are also considered as cell factories, to produce valuable proteins extracellularly, molecular mechanisms of secretory pathway including protein glycosylation have been well investigated. In this review, molecular and physiological aspects of membrane traffic especially related to EE dynamics and protein secretion in filamentous fungi are summarized, and perspectives for application are also described.
Insights
This review explores membrane traffic in filamentous fungi, focusing on early endosome (EE) dynamics and protein secretion. Understanding these processes is key for fungal cell factory applications.
Area of Science:
- Cell Biology
- Mycology
- Molecular Biology
Background:
- Eukaryotic cells utilize membrane traffic for organelle communication.
- Filamentous fungi exhibit specialized membrane traffic due to high cell polarization.
- Early endosomes (EEs) are crucial for organelle distribution and signaling in fungi.
Purpose of the Study:
- To summarize molecular and physiological aspects of membrane traffic in filamentous fungi.
- To highlight the role of EE dynamics in fungal cells.
- To discuss applications related to protein secretion.
Main Methods:
- Literature review of membrane traffic mechanisms.
- Analysis of EE motility and function in fungi.
- Examination of secretory pathway and protein glycosylation.
Main Results:
- EEs exhibit dynamic long-range motility essential for fungal cell physiology.
- Membrane traffic is integral to organelle distribution and signal transduction.
- The secretory pathway, including glycosylation, is well-investigated for fungal protein production.
Conclusions:
- Membrane traffic, particularly EE dynamics, plays a vital role in filamentous fungi.
- Understanding these mechanisms offers potential for optimizing fungal cell factories for protein production.
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