Genetic manipulation of pathway regulation for overproduction of angucycline-like antibiotic auricin in Streptomyces aureofaciens CCM 3239
Jazyk angličtina Země Spojené státy americké Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- antibakteriální látky biosyntéza MeSH
- DNA bakterií genetika metabolismus MeSH
- makrolidy metabolismus MeSH
- multigenová rodina MeSH
- plazmidy genetika MeSH
- promotorové oblasti (genetika) MeSH
- regulace genové exprese u bakterií MeSH
- restrikční mapování MeSH
- Streptomyces aureofaciens genetika metabolismus MeSH
- vysokoúčinná kapalinová chromatografie MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- antibakteriální látky MeSH
- auricin MeSH Prohlížeč
- DNA bakterií MeSH
- makrolidy MeSH
The polyketide gene cluster aur1 is responsible for the production of the antibiotic auricin in Streptomyces aureofaciens CCM 3239. Auricin production is low and strictly regulated by two regulators, Aur1P and Aur1R. To improve auricin yield, we genetically manipulated S. aureofaciens CCM 3239 strain to overcome this strict regulation. A regulatory region including aur1R, aur1P, aur1O and the target biosynthetic aur1Ap promoter were replaced by the strong constitutive ermEp* promoter. However, auricin production was decreased in such a genetically manipulated strain. In the second strategy we placed the aur1P gene for auricin pathway-specific activator under the control of the ermEp* promoter. The resulting strain has been shown to produce 2.8-fold higher amount of auricin compared with the WT strain.
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