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Geranylgeraniol: Bio-based platform for teprenone, menaquinone-4, and α-tocotrienol synthesis.

Bioresour Technol

November 2024

Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, China; Department of Urology, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan, China; Wuhan Hesheng Technology Co., Ltd, Wuhan, China; TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, China; State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, and School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China. Electronic address:

Article Synopsis
  • * This study introduces a new strategy that uses a chemosynthesis-like method to emphasize the value of biobased intermediates, specifically focusing on geranylgeraniol (GGOH) production.
  • * Through advanced metabolic engineering and a novel yeast strain, researchers achieved significant GGOH production, which led to the semi-synthesis of several pharmaceuticals, suggesting new possibilities for industrial production improvements and innovations.
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Chemosynthesis: a neglected foundation of marine ecology and biogeochemistry.

Trends Microbiol

July 2024

Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia; Securing Antarctica's Environmental Future, Monash University, Clayton, VIC 3800, Australia; Centre to Impact AMR, Monash University, Melbourne, Victoria, Australia. Electronic address:

Chemosynthesis is a metabolic process that transfers carbon to the biosphere using reduced compounds. It is well recognised that chemosynthesis occurs in much of the ocean, but it is often thought to be a negligible process compared to photosynthesis. Here we propose that chemosynthesis is the underlying process governing primary production in much of the ocean and suggest that it extends to a much wider range of compounds, microorganisms, and ecosystems than previously thought.

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Prokaryotes and free-living nematodes are both very abundant and co-occur in marine environments, but little is known about their possible association. Our objective was to characterize the microbiome of a neglected but ecologically important group of free-living benthic nematodes of the Oncholaimidae family. We used a multi-approach study based on microscopic observations (Scanning Electron Microscopy and Fluorescence In Situ Hybridization) coupled with an assessment of molecular diversity using metabarcoding based on the 16S rRNA gene.

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Population dynamics of chemotrophs in anaerobic conditions where the metabolic energy acquisition per redox reaction is limited.

J Theor Biol

April 2019

Department of Bioscience, School of Science and Technology, Kwansei Gakuin University, Gakuen 2-1, Sanda-shi, Hyogo 669-1337, Japan.

We present a new model of microbial population growth that focuses on the acquisition of metabolic energy through chemosynthesis and how this depends on the concentration of resources and byproducts. Due to entropy effects, organisms extract the greater energy (i.e.

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