Collaborative Biosynthesis Of Maleimide- And Succinimide-Containing Natural Products By Fungal Polyketide Megasynthases
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY(2017)
摘要
Fungal polyketide synthases (PKSs) can function collaboratively to synthesize natural products of significant structural diversity. Here we present a new mode of collaboration between a highly reducing PIKS (HRPKS) and a PKS-nonribosomal peptide synthetase (PKS-NRPS) in the synthesis of oxaleimides from the Penicillium species. The HRPKS is recruited in the synthesis of an olefin-containing free amino acid, which is activated and incorporated by the adenylation domain of the PKS-NRPS. The precisely positioned olefin from the unnatural amino acid is proposed to facilitate a scaffold rearrangement of the FKS-NRPS product to forge the maleimide and succinimide cores of oxaleimides.
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