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2018 Fiscal Year Final Research Report

Analysis of novel mitochondrion-related organelles in Entamoeba histolytica

Research Project

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Project/Area Number 17K19416
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Research Field Biology of Cells to Organisms, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Nozaki Tomoyoshi  東京大学, 大学院医学系研究科(医学部), 教授 (60198588)

Co-Investigator(Kenkyū-buntansha) サントス ハルベルト・ヒメネス  東京大学, 大学院医学系研究科(医学部), 助教 (90793779)
Project Period (FY) 2017-06-30 – 2019-03-31
Keywords進化 / オルガネラ / ミトコンドリア / 代謝 / 内部共生
Outline of Final Research Achievements

We characterized two proteins involved in mitosome (uniquely evolved mitochondrion-related organelle in anaerobic eukaryotic cells)-vesicle contact, which possibly allows substrate/product transport and quality control of mitosomes. We concluded by various experimental approaches using biochemistry, cell biology, and genetics that ETMP1, a novel lineage-specific mitosomal transmembrane protein, interacts with EHD-domain containing proteins, which are localized to a variety of vesicles/vacuoles. Thus, this study shed new light on organellogenesis in eukaryotes.

Free Research Field

寄生虫学、感染症、進化、分子生物学、生化学、分子生物学、代謝学、細胞生物学、オミクス解析、創薬

Academic Significance and Societal Importance of the Research Achievements

本研究成果により、酸素の中で進化をした真核生物において、その中の細菌の内部共生に由来してできたミトコンドリアに似た細胞内小器官であるマイトソームの細胞内での相互作用を担うタンパク質が同定された。様々な環境の中で進化するオルガネラの多様性の一端が解明された。

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Published: 2020-03-30  

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