Simulation and prediction of protein production in fed-batch E. coli cultures: An engineering approach

Daniel Calleja, John Kavanagh, Carles de Mas, Josep López-Santín

Research output: Contribution to journalArticleResearchpeer-review

3 Citations (Scopus)

Abstract

© 2016 Wiley Periodicals, Inc. An overall model describing the dynamic behavior of fed-batch E. coli processes for protein production has been built, calibrated and validated. Using a macroscopic approach, the model consists of three interconnected blocks allowing simulation of biomass, inducer and protein concentration profiles with time. The model incorporates calculation of the extra and intracellular inducer concentration, as well as repressor-inducer dynamics leading to a successful prediction of the product concentration. The parameters of the model were estimated using experimental data of a rhamnulose-1-phosphate aldolase-producer strain, grown under a wide range of experimental conditions. After validation, the model has successfully predicted the behavior of different strains producing two different proteins: fructose-6-phosphate aldolase and ω-transaminase. In summary, the presented approach represents a powerful tool for E. coli production process simulation and control. Biotechnol. Bioeng. 2016;113: 772-782.
Original languageEnglish
Pages (from-to)772-782
JournalBiotechnology and bioengineering
Volume113
DOIs
Publication statusPublished - 1 Apr 2016

Keywords

  • Aldolases
  • E.coli
  • Fed-batch
  • Protein production
  • Simulation and modelling
  • Transaminases

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