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2022 Fiscal Year Final Research Report

Construction of a synthetic complex microbial system for chemical production

Research Project

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Project/Area Number 20H02544
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 27040:Biofunction and bioprocess engineering-related
Research InstitutionKyushu University

Principal Investigator

HANAI Taizo  九州大学, 農学研究院, 教授 (60283397)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywords合成生物学 / 人工遺伝子回路 / 合成代謝経路 / バイオ物質生産
Outline of Final Research Achievements

We designed and constructed an E. coli strain that produces glycosyltransferases, destroys its own cells after the enzyme is fully produced, and releases the glycosyltransferases into the culture medium ("glycosylation/lysis strain"), Next, by co-culturing the glycosylation/lysis strain and the E. coli strain that produces the target substance from monosaccharides (target substance production strain), we constructed and improved a new process that realizes the processes of "production of glycolytic enzymes," "recovery of glycolytic enzymes from cells and saccharification of biomass," and "production of target substances from monosaccharides" in a single reactor.

Free Research Field

合成生物学

Academic Significance and Societal Importance of the Research Achievements

一般的に、セルロース系バイオマスからの物質生産では、バイオマスの分解に必要な糖化酵素が必要となることが多く、糖化酵素の生産と精製を行う①酵素生産プロセス、バイオマスから単糖に変換する②糖化プロセス、③物質生産プロセスが必要となる。これらのプロセスの内、①および②における糖化酵素の生産・精製にかかるコストが全体の20%程度を占めることが、この方法の社会実装を妨げる大きな障害のうちの一つとなっている。そのため、本研究で構築するシステムが実現されれば、社会的なインパクトが高い原油由来の燃料や一般化学製品原料が、バイオマス由来の物質に取って代わることが可能となると考えられる。

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Published: 2024-01-30  

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