Cited by 230Microbial Metabolic Engineering and BioproductionGene Regulatory Network AnalysisBioinformatics and Genomic Networks

A genome-scale Escherichia coli kinetic metabolic model k-ecoli457 satisfying flux data for multiple mutant strains

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Khodayari, Ali, Maranas, Costas D.·2016·Nature Communications

Abstract

Kinetic models of metabolism at a genome scale that faithfully recapitulate the effect of multiple genetic interventions would be transformative in our ability to reliably design novel overproducing microbial strains. Here, we introduce k-ecoli457, a genome-scale kinetic model of Escherichia coli metabolism that satisfies fluxomic data for wild-type and 25 mutant strains under different substrates and growth conditions. The k-ecoli457 model contains 457 model reactions, 337 metabolites and 295 substrate-level regulatory interactions. Parameterization is carried out using a genetic algorithm by simultaneously imposing all available fluxomic data (about 30 measured fluxes per mutant). The Pearson correlation coefficient between experimental data and predicted product yields for 320 engineered strains spanning 24 product metabolites is 0.84. This is substantially higher than that using flux balance analysis, minimization of metabolic adjustment or maximization of product yield exhibiting systematic errors with correlation coefficients of, respectively, 0.18, 0.37 and 0.47 (k-ecoli457 is available for download at http://www.maranasgroup.com).

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  1. Cautha S. C.. in 12th IFAC Symposium on Computer Applications in Biotechnology 221–226 (Mumbai, India, 2013).
  2. Cornish-Bowden A. in Fundamentals of Enzyme Kinetics 4th edn Wiley (2012).

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Authors
Khodayari, A., & Maranas, C. D.
Affiliations
Pennsylvania State University (US)
Corresponding author
Maranas, Costas D.
Venue
Nature Communications
Published
2016-12-20
Volume
7
Issue
1
Pages
13806-13806
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2561960911
Cited by
230
References
64
Citations by year
2026: 7 · 2025: 17 · 2024: 18 · 2023: 23 · 2022: 21 · 2021: 20 · 2020: 32 · 2019: 29 · 2018: 39 · 2017: 24
FWCI
15.93
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • U.S. Department of Energy (DESC0012377)
  • University of Pennsylvania
  • Pennsylvania State University (DE-SC0012377)
  • Institute for Computational and Data Sciences, Pennsylvania State University
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 › Molecular Biology › Bioinformatics and Genomic Networks
Keywords
Escherichia coli, kinetic metabolic models, genome-scale metabolic modeling, fluxomics, mutant strain, product yield prediction, metabolic engineering
MeSH terms
Escherichia coli, Kinetics, Models, Biological, Mutation, Genome, Bacterial, Metabolome, Metabolic Flux Analysis

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