Growth-coupled overproduction is feasible for almost all metabolites in five major production organisms

Axel von Kamp and Steffen Klamt ()
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Axel von Kamp: ARB Group, Max Planck Institute for Dynamics of Complex Technical Systems
Steffen Klamt: ARB Group, Max Planck Institute for Dynamics of Complex Technical Systems

Nature Communications, 2017, vol. 8, issue 1, 1-10

Abstract: Abstract Computational modelling of metabolic networks has become an established procedure in the metabolic engineering of production strains. One key principle that is frequently used to guide the rational design of microbial cell factories is the stoichiometric coupling of growth and product synthesis, which makes production of the desired compound obligatory for growth. Here we show that the coupling of growth and production is feasible under appropriate conditions for almost all metabolites in genome-scale metabolic models of five major production organisms. These organisms comprise eukaryotes and prokaryotes as well as heterotrophic and photoautotrophic organisms, which shows that growth coupling as a strain design principle has a wide applicability. The feasibility of coupling is proven by calculating appropriate reaction knockouts, which enforce the coupling behaviour. The study presented here is the most comprehensive computational investigation of growth-coupled production so far and its results are of fundamental importance for rational metabolic engineering.

Date: 2017
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DOI: 10.1038/ncomms15956

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