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2022 Fiscal Year Final Research Report

Elucidation of deposition modeling mechanism responsible for bacterial microtube formation

Research Project

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Project/Area Number 20K05846
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 38040:Bioorganic chemistry-related
Research InstitutionYokohama National University

Principal Investigator

Takeda Minoru  横浜国立大学, 大学院工学研究院, 教授 (40247507)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords有鞘細菌 / 構造形成多糖
Outline of Final Research Achievements

The aim of this study was to get an idea of a new microfabrication technique using polysaccharide-based polymers from aquatic bacteria that form microtubes outside the cell. The target for investigation was a type of microtubes that extends at the end. This type of microtube was thought to consist of sugars and amino acids, but a new finding suggests that it is also possible to assemble a microtube with a polymer only composed of sugars. It was also suggested that a balance of negative and positive charges should be established for microtube formation. It was also confirmed that the microtubule-degrading enzyme has a unique specificity. In addition, a microtube-forming bacterium probably represents a novel taxon was found in a wastewater treatment plant.

Free Research Field

応用微生物学

Academic Significance and Societal Importance of the Research Achievements

本研究では、細菌による菌体外でのマイクロチューブを形成に関して研究を行い、下記の学術的成果を得た。すわなち、マイクロチューブ形成には高分子間の静電的相互作用が重要であることを明らかにした。また、マイクロチューブ分解酵素が新しい種類の酵素である可能性を示した。さらに、新規な有鞘細菌を発見した。そして、下記のような波及効果が期待される。マイクロチューブ形成細菌は排水処理の根幹を成す活性汚泥の沈降性悪化との関連が知られており、マイクロチューブ形成機構の理解は対処法を立案にあたって有意義である。ナノテクノロジーの分野では、水中での微細造形手法の開発に展開できる可能性がある。

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Published: 2024-01-30  

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