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| 001 | 909084 | ||
| 005 | 20240820094010.0 | ||
| 024 | 7 | _ | |a 10.1016/j.ymben.2022.06.004 |2 doi |
| 024 | 7 | _ | |a 1096-7176 |2 ISSN |
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| 100 | 1 | _ | |a Schito, Simone |0 P:(DE-Juel1)164840 |b 0 |u fzj |
| 245 | _ | _ | |a Communities of Niche-optimized Strains (CoNoS) – Design and creation of stable, genome-reduced co-cultures |
| 260 | _ | _ | |a Orlando, Fla. |c 2022 |b Academic Press |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Current bioprocesses for production of value-added compounds are mainly based on pure cultures that are composed of rationally engineered strains of model organisms with versatile metabolic capacities. However, in the comparably well-defined environment of a bioreactor, metabolic flexibility provided by various highly abundant biosynthetic enzymes is much less required and results in suboptimal use of carbon and energy sources for compound production. In nature, non-model organisms have frequently evolved in communities where genome-reduced, auxotrophic strains cross-feed each other, suggesting that there must be a significant advantage compared to growth without cooperation. To prove this, we started to create and study synthetic communities of niche-optimized strains (CoNoS) that consists of two strains of the same species Corynebacterium glutamicum that are mutually dependent on one amino acid. We used both the wild-type and the genome-reduced C1* chassis for introducing selected amino acid auxotrophies, each based on complete deletion of all required biosynthetic genes. The best candidate strains were used to establish several stably growing CoNoS that were further characterized and optimized by metabolic modelling, microfluidic experiments and rational metabolic engineering to improve amino acid production and exchange. Finally, the engineered CoNoS consisting of an l-leucine and l-arginine auxotroph showed a specific growth rate equivalent to 83% of the wild type in monoculture, making it the fastest co-culture of two auxotrophic C. glutamicum strains to date. Overall, our results are a first promising step towards establishing improved biobased production of value-added compounds using the CoNoS approach. |
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| 536 | _ | _ | |a DFG project 428038451 - SiMBal 2.0: Quantifizierung der Co-Kultur-Leistung und der intrazellulären Interaktionen in Abhängigkeit der Umgebung |0 G:(GEPRIS)428038451 |c 428038451 |x 1 |
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| 700 | 1 | _ | |a Kohlheyer, Dietrich |0 P:(DE-Juel1)140195 |b 8 |u fzj |
| 700 | 1 | _ | |a Bott, Michael |0 P:(DE-Juel1)128943 |b 9 |u fzj |
| 700 | 1 | _ | |a Wiechert, Wolfgang |0 P:(DE-Juel1)129076 |b 10 |u fzj |
| 700 | 1 | _ | |a Baumgart, Meike |0 P:(DE-Juel1)145489 |b 11 |u fzj |
| 700 | 1 | _ | |a Noack, Stephan |0 P:(DE-Juel1)129050 |b 12 |e Corresponding author |
| 773 | _ | _ | |a 10.1016/j.ymben.2022.06.004 |g Vol. 73, p. 91 - 103 |0 PERI:(DE-600)1471017-1 |p 91 - 103 |t Metabolic engineering |v 73 |y 2022 |x 1096-7176 |
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