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Biosynthesis in Bacteria

Biosynthesis in bacteria is a fundamental anabolic process that generates essential macromolecules, including proteins, nucleic acids, lipids, and polysaccharides. These macromolecules are critical for cellular growth, replication, and function. The process is tightly regulated and energetically linked to catabolic pathways to ensure optimal resource utilization.Biosynthetic pathways begin with precursor metabolites such as pyruvate, acetyl-CoA, and glucose-6-phosphate derived from glycolysis,...
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Penicillin, one of the earliest and most widely used antibiotics, is produced industrially by the filamentous fungus Penicillium chrysogenum. Large stirred-tank bioreactors ranging from tens to hundreds of thousands of liters maintain tightly controlled temperature, pH, and dissolved oxygen conditions to support fungal metabolism and maximize antibiotic yield. Penicillin is a secondary metabolite, synthesized primarily during the stationary growth phase, which requires a carefully managed...
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Related Experiment Video

Updated: Jun 21, 2026

From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028
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From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028

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Triggering cryptic natural product biosynthesis in microorganisms.

Kirstin Scherlach1, Christian Hertweck

  • 1Leibniz Institute for Natural Product Research and Infection Biology, (HKI), Beutenbergstr. 11a, 07745, Jena, Germany.

Organic & Biomolecular Chemistry
|July 11, 2009
PubMed
Summary

Microbial natural products offer novel therapeutics, but many valuable compounds remain hidden. This overview explores strategies like external cues, co-cultivation, and genomic approaches to activate silent biosynthetic pathways for discovering cryptic natural products.

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A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
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Last Updated: Jun 21, 2026

From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028
09:08

From a Natural Product to Its Biosynthetic Gene Cluster: A Demonstration Using Polyketomycin from Streptomyces diastatochromogenes Tü6028

Published on: January 13, 2017

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
07:59

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products

Published on: October 4, 2019

Area of Science:

  • Microbiology
  • Natural Product Chemistry
  • Drug Discovery

Background:

  • Microorganisms are a vital source of novel therapeutic compounds.
  • Standard laboratory culturing often fails to activate silent biosynthetic gene clusters, leading to the overlooking of valuable natural products.
  • These silent or
  • cryptic
  • pathways require specific activation conditions.

Purpose of the Study:

  • To provide a comprehensive overview of strategies for activating silent biosynthetic pathways in microorganisms.
  • To highlight methods for uncovering
  • cryptic
  • natural products with therapeutic potential.
  • To discuss the importance of exploring microbial chemical diversity beyond standard cultivation.

Main Methods:

  • Review of external stimuli and environmental manipulation to trigger gene expression.
  • Exploration of microbial co-cultivation techniques to simulate natural interactions.
  • Discussion of genomic approaches including genome-mining, epigenetic modification, and engineered pathway activation.

Main Results:

  • Various external cues and co-cultivation methods can successfully activate cryptic biosynthetic pathways.
  • Genomic strategies, particularly genome-mining and pathway engineering, offer powerful tools for identifying and activating silent gene clusters.
  • These approaches significantly increase the potential for discovering novel natural products from microbial sources.

Conclusions:

  • Activating silent biosynthetic pathways is essential for unlocking the full therapeutic potential of microorganisms.
  • A combination of cultivation-based and genomic strategies is most effective for discovering cryptic natural products.
  • Further research into these methods will accelerate the discovery of new drug leads.