Cited by 12Microbial Metabolic Engineering and BioproductionGene Regulatory Network AnalysisBacterial Genetics and Biotechnology

Resource allocation accounts for the large variability of rate-yield phenotypes across bacterial strains

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Baldazzi, Valentina, Ropers, Delphine, Gouzé, Jean-Luc, Gedeon, Tomas, de Jong, Hidde·2023·eLife

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Abstract

Different strains of a microorganism growing in the same environment display a wide variety of growth rates and growth yields. We developed a coarse-grained model to test the hypothesis that different resource allocation strategies, corresponding to different compositions of the proteome, can account for the observed rate-yield variability. The model predictions were verified by means of a database of hundreds of published rate-yield and uptake-secretion phenotypes of Escherichia coli strains grown in standard laboratory conditions. We found a very good quantitative agreement between the range of predicted and observed growth rates, growth yields, and glucose uptake and acetate secretion rates. These results support the hypothesis that resource allocation is a major explanatory factor of the observed variability of growth rates and growth yields across different bacterial strains. An interesting prediction of our model, supported by the experimental data, is that high growth rates are not necessarily accompanied by low growth yields. The resource allocation strategies enabling high-rate, high-yield growth of E. coli lead to a higher saturation of enzymes and ribosomes, and thus to a more efficient utilization of proteomic resources. Our model thus contributes to a fundamental understanding of the quantitative relationship between rate and yield in E. coli and other microorganisms. It may also be useful for the rapid screening of strains in metabolic engineering and synthetic biology.

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Authors
Baldazzi, V., Ropers, D., Gouzé, J.-L., Gedeon, T., & de Jong, H.
Affiliations
  • Centre National de la Recherche Scientifique (FR)
  • Institut national de recherche en sciences et technologies du numérique (FR)
  • Montana State University
  • Université Grenoble Alpes, Inria
Corresponding author
Baldazzi, Valentina
Venue
eLife
Published
2023-05-31
Volume
12
Pages
1-29
ISSN
2050-084X (ISSN-L)
OpenAlex
W4378783540
Cited by
12
References
88
Citations by year
2026: 5 · 2025: 3 · 2024: 3 · 2023: 1
FWCI
1.07
Type
journal article
Language
en
Open access
Locations
  • eLife (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Montana State University ScholarWorks (Montana State University) (submittedVersion, cc-by)
  • HAL (submittedVersion, cc-by)
  • HAL (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
French National Research Agency (Maximic project (ANR-17-CE40-0024))
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial Metabolic Engineering and Bioproduction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gene Regulatory Network Analysis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
Keywords
resource allocation, Escherichia coli, bacterial growth rate, growth yield, proteome composition, coarse-grained models, glucose uptake, enzyme saturation, strain differences, metabolic engineering
MeSH terms
Escherichia coli, Ribosomes, Resource Allocation, Proteomics, Metabolic Engineering

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