論文 - 詳細
RRC ID | 48171 |
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著者 | Miyauchi R, Ono C, Ohnuki T, Shiba Y. |
タイトル | Nectrisine Biosynthesis Genes in Thelonectria discophora SANK 18292: Identification and Functional Analysis. |
ジャーナル | Appl Environ Microbiol |
Abstract |
The fungus Thelonectria discophora SANK 18292 produces the iminosugar nectrisine, which has a nitrogen-containing heterocyclic 5-membered ring and acts as a glycosidase inhibitor. In our previous study, an oxidase (designated NecC) that converts 4-amino-4-deoxyarabinitol to nectrisine was purified from T. discophora cultures. However, the genes required for nectrisine biosynthesis remained unclear. In this study, the nectrisine biosynthetic gene cluster in T. discophora was identified from the contiguous genome sequence around the necC gene. Gene disruption and complementation studies and heterologous expression of the gene showed that necA, necB, and necC could be involved in nectrisine biosynthesis, during which amination, dephosphorylation, and oxidation occur. It was also demonstrated that nectrisine could be produced by recombinant Escherichia coli coexpressing the necA, necB, and necC genes. These findings provide the foundation to develop a bacterial production system for nectrisine or its intermediates through genetic engineering. IMPORTANCE:Iminosugars might have great therapeutic potential for treatment of many diseases. However, information on the genes for their biosynthesis is limited. In this study, we report the identification of genes required for biosynthesis of the iminosugar nectrisine in Thelonectria discophora SANK 18292, which was verified by disruption, complementation, and heterologous expression of the genes involved. We also demonstrate heterologous production of nectrisine by recombinant E. coli, toward developing an efficient production system for nectrisine or its intermediates through genetic engineering. |
巻・号 | 82(21) |
ページ | 6414-6422 |
公開日 | 2016-11-1 |
DOI | 10.1128/AEM.01709-16 |
PII | AEM.01709-16 |
PMID | 27565616 |
PMC | PMC5066358 |
MeSH | Amination Escherichia coli / genetics Genes, Fungal* Genetic Complementation Test Genetic Engineering Genome, Fungal Hypocreales / genetics* Hypocreales / metabolism Imino Furanoses / chemistry Imino Furanoses / isolation & purification* Imino Furanoses / metabolism* Multigene Family Oxidation-Reduction |
IF | 4.016 |
引用数 | 3 |
WOS 分野 | BIOTECHNOLOGY & APPLIED MICROBIOLOGY MICROBIOLOGY |
リソース情報 | |
一般微生物 | JCM 30947 |