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The biosynthesis of the fungal metabolite tenellin from Beauveria bassiana CBS110.25 was investigated in the presence of the epigenetic modifiers 5-azacytidine and suberoyl bis-hydroxamic acid and under conditions where individual genes from the tenellin biosynthetic gene cluster were silenced. Numerous new compounds were synthesized, indicating that the normal predominant biosynthesis of tenellin is just one outcome out of a diverse array of possible products. The structures of the products reveal key clues about the programming selectivities of the tenellin polyketide synthase.
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http://dx.doi.org/10.1021/ja204200x | DOI Listing |
RSC Adv
September 2025
Department of Molecular Microbiology and Immunology, CSIR-Central Drug Research Institute Sector 10, Janakipuram Extension, Sitapur Road Lucknow Uttar Pradesh-226031 India.
Microorganisms, including bacteria, viruses, fungi, and protozoa, significantly impact human health by causing infections that can lead to serious health issues, including mortality and morbidity. Antimicrobials, including antibacterials, anti-virals, anti-fungals, and anti-parasitics, effectively prevent and treat infections in humans and animals. However, pathogens have developed resistance to these antimicrobials, enabling them to survive and persist even in the presence of antibiotics.
View Article and Find Full Text PDFIMA Fungus
August 2025
State Key Laboratory of Microbial Diversity and Innovative Utilization, Institute of Microbiology, Chinese Academy of Sciences, Beijing, 100101, China Institute of Microbiology, Chinese Academy of Sciences Beijing China.
is a widely consumed edible mushroom and the only species currently cultivated on an industrial scale. Despite its economic importance, its trophic strategy and genomic adaptations remain elusive. Here, we presented high-quality, chromosome-level genome assemblies for two sexually compatible monokaryons (PP78 and PP85) of .
View Article and Find Full Text PDFAngew Chem Int Ed Engl
September 2025
Department of Chemical and Pharmaceutical Biology, University of Groningen, Antonius Deusinglaan 1, Groningen, 9713AV, The Netherlands.
Type III polyketide synthases (T3PKSs) are enzymes that produce diverse compounds of ecological and clinical importance. While well-studied in plants, only a handful of T3PKSs from fungi have been characterised to date. Here, we developed a comprehensive workflow for kingdom-wide characterisation of T3PKSs.
View Article and Find Full Text PDFG3 (Bethesda)
September 2025
Department of Biological Sciences, University of Manitoba, Winnipeg, MB, Canada, R3T 2N2.
Exophiala dermatitidis is a polyextremotolerant black yeast species. E. dermatitidis produces 1,8 dihydroxynaphthalene (DHN) melanin via the Polyketide Synthase 1 (PKS1) pathway enabling it to survive harmful conditions.
View Article and Find Full Text PDFOrg Lett
September 2025
Helmholtz International Lab for Anti-infectives, Shandong University-Helmholtz Institute of Biotechnology, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China.
Six new spirotetronate polyketides, chrolactomycins A-F (-), and the known chrolactomycin () were isolated and identified from TX15. Chrolactomycins D-F (-) feature an unprecedented dimeric skeleton bridged by a rare barbiturate unit. Sequencing and characterization of a type I polyketide synthase biosynthetic gene cluster led to the proposal of a biosynthetic pathway for -.
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