Biosynthesis of Colabomycin E, a New Manumycin-Family Metabolite, Involves an Unusual Chain-Length Factor

作者: Kateřina Petříčková , Stanislav Pospíšil , Marek Kuzma , Tereza Tylová , Michal Jágr

DOI: 10.1002/CBIC.201400068

关键词: BiosynthesisBiochemistryStereochemistryGene clusterPolyketideStreptomycesMetaboliteStreptomyces aureusBiological activityBiologyRecombinant DNA

摘要: Colabomycin E is a new member of the manumycin-type metabolites produced by strain Streptomyces aureus SOK1/5-04 and identified genetic screening from library streptomycete strains. The structures colabomycin accompanying congeners were resolved. entire biosynthetic gene cluster was cloned expressed in lividans. Bioinformatic analysis mutagenic studies components pathway that are involved formation both polyketide chains. Recombinant synthases (PKSs) assembled asukamycin routes catalyzing biosynthesis "lower" carbon chains constructed S. ΔcolC11-14 deletion mutant. Analysis recombinant strains provided evidence pathways length lower chain controlled an unusual chain-length factor supporting either triketide or tetraketide E. Biological activity assays indicated significantly inhibited IL-1β release THP-1 cells might thus potentially act as anti-inflammatory agent.

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