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Multiscale metabolic engineering in biological lignin valorization.

Ruo-Ying Liu1,2, Bing-Zhi Li1,2, Ying-Jin Yuan1,2

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Synthetic biology enhances lignin bioconversion by optimizing metabolic regulation in microbes. This approach improves resource allocation for sustainable bio-based manufacturing and a circular bioeconomy.

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Area of Science:

  • Biotechnology
  • Synthetic Biology
  • Metabolic Engineering

Background:

  • Lignin is a renewable aromatic polymer abundant in biomass.
  • Its complex structure limits efficient bioconversion using traditional methods.
  • Metabolic engineering strategies face challenges in optimizing lignin utilization.

Purpose of the Study:

  • To review synthetic biology-guided metabolic regulation for lignin valorization.
  • To explore multiscale metabolic regulation strategies for ligninolytic strains.
  • To highlight advanced technologies for improving lignin bioconversion efficiency.

Main Methods:

  • Overview of critical enzymes in lignin biotransformation.
  • Analysis of metabolic pathway networks and genome-phenotype relationships.
  • Integration of machine learning for predictive modeling.

Main Results:

  • Synthetic biology effectively coordinates intracellular resource allocation.
  • Multiscale metabolic regulation balances metabolic fluxes in ligninolytic strains.
  • Emerging technologies show significant potential for lignin valorization.

Conclusions:

  • Synthetic biology-guided metabolic regulation is key to advancing lignin bioconversion.
  • This approach enhances microbial adaptation for industrial applications.
  • It promotes the sustainability of the lignin-based bioeconomy.