Your Weekly Dose of Mycology Research
In the biosynthesis of cochliodone, polyketides (PKs) undergo unexpected in-trans reduction post-synthesis by nonreducing polyketide synthase (PKS) CcdL. This study identifies an acetyltransferase, acetate lyase, and enoyl reductase as key enzymes facilitating extensive reduction of the unsaturated PK backbone, revealing novel insights into chemoenzymatic modifications in fungal metabolites.
Enantioselective biosynthesis refers to the production of molecules that are identical except for their mirror-image orientation, known as enantiomers. This study identifies distinct nonribosomal peptide synthetases (NRPSs), NitA and NitC, responsible for synthesizing the enantiomers (+)- and (-)-auranthines. These findings underline NRPS diversity's role in producing stereochemically complex fungal metabolites.
Terpene cyclases are enzymes critical for constructing diverse terpenoid structures. In Aspergillus fresenii, researchers have identified a unique Type II terpene cyclase pathway responsible for synthesizing the rare radarin scaffold. A specific regioselective IDT epoxidase modifies 3'-geranylgeranylindole, highlighting a novel biosynthetic route for intricate IDT architectures.
The female genital tract (FGT) mycobiome refers to the diverse fungal communities present within the reproductive system. In a groundbreaking study, researchers employed metaproteomics to characterize the taxonomic composition and functional processes of the FGT mycobiome in South African women. This work uncovers significant diversity, laying crucial groundwork for future FGT mycobiome research.