RRC ID 48171
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