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  4. Analysis and Design of Metabolic Engineering and Synthetic Biology Strategies using Large Scale Dynamic Models of Metabolism
 
conference poster not in proceedings

Analysis and Design of Metabolic Engineering and Synthetic Biology Strategies using Large Scale Dynamic Models of Metabolism

Fengos, Georgios  
•
Miskovic, Ljubisa  
•
Hatzimanikatis, Vassily  
2016
Metabolic Engineering 11

Systematic analysis for the redirection of carbon flux in metabolite-producing microorganisms requires the comprehensive understanding of their complex metabolic processes. The use of large-scale dynamic models of metabolism plays key role in the understanding of these processes and the study of possible metabolic engineering interventions. However, the generation of such models is hampered by the intrinsic nonlinearities of enzymatic reactions, and the uncertainties at different levels. In particular there is limited knowledge about the exact kinetic mechanisms, and many of the parameters involved in these mechanisms remain largely unknown. In this study we propose a systematic methodology to generate large populations of dynamic non-linear models of metabolism using the ORACLE (Optimization and Risk Analysis of Complex Living Entities) framework. Instead of seeking for an optimal value of the estimated kinetic model parameter values, we integrate thermodynamics, available omics, and kinetic data to construct populations of models that are locally stable, and consistent with the observed physiology. To demonstrate the utility of this methodology we constructed a population of large-scale dynamical models of optimally grown E. coli. We used these models to perform large-scale perturbations of E. coli metabolism and to analyze their simulated responses. The aforementioned analyses provides valuable insight for the design of metabolic engineering strategies towards amplification of desired product-forming pathways.

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Type
conference poster not in proceedings
Author(s)
Fengos, Georgios  
Miskovic, Ljubisa  
Hatzimanikatis, Vassily  
Date Issued

2016

Subjects

metabolic control analysis

•

large-scale dynamic models

•

metabolism

Written at

EPFL

EPFL units
LCSB  
Event nameEvent placeEvent date
Metabolic Engineering 11

Awaji Island, Japan

June 26-30, 2016

Available on Infoscience
October 6, 2017
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/141045
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