Cited by 93Microbial Metabolic Engineering and BioproductionCRISPR and Genetic EngineeringBacterial Genetics and Biotechnology

Implementation of stable and complex biological systems through recombinase-assisted genome engineering

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Santos, Christine Nicole S., Regitsky, Drew D., Yoshikuni, Yasuo·2013·Nature Communications

Abstract

Evaluating the performance of engineered biological systems with high accuracy and precision is nearly impossible with the use of plasmids due to phenotypic noise generated by genetic instability and natural population dynamics. Minimizing this uncertainty therefore requires a paradigm shift towards engineering at the genomic level. Here, we introduce an advanced design principle for the stable installment and implementation of complex biological systems through recombinase-assisted genome engineering (RAGE). We apply this concept to the development of a robust strain of Escherichia coli capable of producing ethanol directly from brown macroalgae. RAGE significantly expedites the optimal implementation of a 34 kb heterologous pathway for alginate metabolism based on genetic background, integration locus, copy number and compatibility with two other pathway modules (alginate degradation and ethanol production). The resulting strain achieves a ~40% higher titre than its plasmid-based counterpart and enables substantial improvements in titre (~330%) and productivity (~1,200%) after 50 generations.

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  • The resulting engineered strain, which integrates alginate metabolism genes into its genome, produced a 330% higher titer than the canonical plasmid-based E. coli counterpart after culturing both strains on synthetic seaweed medium for 50 generations.

    “The resulting engineered strain, which integrates alginate metabolism genes into its genome, produced a 330% higher titer than the canonical plasmid-based E. coli counterpart after culturing both strains on synthetic seaweed medium for 50 generations (Santos et al., 2013).”

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  1. Yoshikuni, Y., Wargacki, A. J. & Herman, A. Microbial systems for producing commodity chemicals. US Patent 12/899,419 (2011).

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Authors
Santos, C. N. S., Regitsky, D. D., & Yoshikuni, Y.
Corresponding author
Yoshikuni, Yasuo
Venue
Nature Communications
Published
2013-09-23
Volume
4
Issue
1
Pages
2503-2503
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2080365353
Cited by
93
References
42
Citations by year
2026: 5 · 2025: 5 · 2024: 8 · 2023: 6 · 2022: 12 · 2021: 9 · 2020: 9 · 2019: 8 · 2018: 3 · 2017: 3 · 2016: 16 · 2015: 4 · 2014: 4 · 2013: 1
FWCI
3.73
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
Funders
  • U.S. Department of Energy
  • Corporación de Fomento de la Producción
  • Advanced Research Projects Agency - Energy (DE-AR0000006)
  • Advanced Research Projects Agency
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
Escherichia coli, brown macroalgae, ethanol production, chromosomal integration, plasmid instability, phenotypic noise, genetic background, copy number, strain robustness
MeSH terms
Ethanol, Phaeophyceae, Alginates, Escherichia coli, Genetic Engineering, Hexuronic Acids, Plasmids, Mutagenesis, Insertional, Genome, Bacterial, Glucuronic Acid, Escherichia coli Proteins, Recombinases, Metabolic Networks and Pathways

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