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A network property necessary for concentration robustness.


ABSTRACT: Maintenance of functionality of complex cellular networks and entire organisms exposed to environmental perturbations often depends on concentration robustness of the underlying components. Yet, the reasons and consequences of concentration robustness in large-scale cellular networks remain largely unknown. Here, we derive a necessary condition for concentration robustness based only on the structure of networks endowed with mass action kinetics. The structural condition can be used to design targeted experiments to study concentration robustness. We show that metabolites satisfying the necessary condition are present in metabolic networks from diverse species, suggesting prevalence of this property across kingdoms of life. We also demonstrate that our predictions about concentration robustness of energy-related metabolites are in line with experimental evidence from Escherichia coli. The necessary condition is applicable to mass action biological systems of arbitrary size, and will enable understanding the implications of concentration robustness in genetic engineering strategies and medical applications.

SUBMITTER: Eloundou-Mbebi JM 

PROVIDER: S-EPMC5075777 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature

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A network property necessary for concentration robustness.

Eloundou-Mbebi Jeanne M O JM   Küken Anika A   Omranian Nooshin N   Kleessen Sabrina S   Neigenfind Jost J   Basler Georg G   Nikoloski Zoran Z  

Nature communications 20161019


Maintenance of functionality of complex cellular networks and entire organisms exposed to environmental perturbations often depends on concentration robustness of the underlying components. Yet, the reasons and consequences of concentration robustness in large-scale cellular networks remain largely unknown. Here, we derive a necessary condition for concentration robustness based only on the structure of networks endowed with mass action kinetics. The structural condition can be used to design ta  ...[more]

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