期刊
CHEMISTRY & BIOLOGY
卷 20, 期 1, 页码 111-122出版社
CELL PRESS
DOI: 10.1016/j.chembiol.2012.10.023
关键词
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资金
- EU [LSHMCT2004-005224]
- Deutsche Forschungsgemeinschaft [DFG SU239/8-1]
- German Ministry of Education and Research [BMBF 0315198]
- Cluster of Excellence Unifying Concepts in Catalysis
Labyrinthopeptins are class III lantibiotics produced by the actinomycete Actinomadura namibiensis. The most characteristic structural feature is the post-translationally installed triamino triacid labionin with a quaternary alpha-carbon. In addition to the unique structure, labyrinthopeptin A2 possess remarkable antiviral and antiallodynic biological activities. To harness the substrate tolerance of the biosynthetic machinery, we developed an efficient system for the generation of labyrinthopeptin analogs. Streptomyces lividans was used as a heterologous host since the natural producer Actinomadura namibiensis remained genetically intractable. Generation of a library of 39 mutants allowed identification of variable and invariable regions in the labyrinthopeptin structures. Additional data on the flexibility of the biosynthetic machinery were provided by in vitro experiments. This study is detailed investigation on the potential to generate analogs of class III lantibiotics by genetic engineering.
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