Supplementary material for 'Orthoester Formation in Fungal Meroterpenoid Austalide F Biosynthesis' from Orthoester formation in fungal meroterpenoid austalide F biosynthesis

Takayoshi Awakawa, Wei Liu, Tongxuan Bai, Tomo Taniguchi & Ikuro Abe
Fungal meroterpenoids are important bioactive natural products. Their biosynthetic machineries are highly diverse, and reconstitutions lead to the production of unnatural meroterpenoids. In this study, heterologous gene expression in Aspergillus oryzae and in vitro assays elucidated the biosynthetic pathway of the orthoester-containing fungal meroterpenoid austalide F. Remarkably, the α-ketoglutarate-dependent oxygenase AstB produces the hemiacetal intermediate, and the methyltransferase AstL transfers a methyl group on it to construct the orthoester functionality. This study presents the extraordinary...
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