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Updated: Sep 22, 2025

Medium Preparation for the Cultivation of Microorganisms under Strictly Anaerobic/Anoxic Conditions
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Engineering Acetogenic Bacteria for Efficient One-Carbon Utilization.

Hyeonsik Lee1, Jiyun Bae1, Sangrak Jin1

  • 1Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, South Korea.

Frontiers in Microbiology
|May 26, 2022
PubMed
Summary
This summary is machine-generated.

Acetogenic bacteria can convert C1 gases like carbon dioxide (CO2) and carbon monoxide (CO) into valuable chemicals. Engineering these microbes, particularly their Wood-Ljungdahl pathway, offers a promising strategy to overcome energy limitations and enhance C1 gas bioconversion.

Keywords:
Wood–Ljungdahl pathwayacetogenic bacteriabiocatalystenergy metabolismone-carbon utilization

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Area of Science:

  • Microbiology
  • Biotechnology
  • Environmental Science

Background:

  • C1 gases (CO2, CO) are major climate change contributors.
  • Microbial biocatalysis offers a promising route for C1 gas valorization.
  • Acetogenic bacteria possess the Wood-Ljungdahl (WL) pathway for C1 fixation.

Purpose of the Study:

  • To review strategies for engineering acetogens for efficient C1 gas conversion.
  • To address the energy limitations hindering acetogen metabolism.
  • To explore future directions in acetogen engineering using systems and synthetic biology.

Main Methods:

  • Focus on engineering the Wood-Ljungdahl (WL) pathway in acetogens.
  • Discusses strategies to overcome energy limitations, such as supplying liquid C1 substrates or electricity.
  • Highlights the potential of systems and synthetic biology approaches.

Main Results:

  • Engineering acetogens, particularly the WL pathway, is key for diverse biochemical production.
  • Overcoming energy limitations is crucial for efficient C1 gas fermentation.
  • Liquid C1 substrates and electricity can enhance cellular energy supply.

Conclusions:

  • Engineering acetogens via WL pathway modification is a promising strategy for C1 gas valorization.
  • Addressing energy limitations through novel substrate supply is essential.
  • Systems and synthetic biology offer future avenues for advancing acetogen-based bioconversion.