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Highly optimised global organisation of metabolic networks

Tanaka, R. and Csete, M. and Doyle, J. (2005) Highly optimised global organisation of metabolic networks. Systems Biology, 152 (4). pp. 179-184. ISSN 1741-2471. doi:10.1049/ip-syb:20050042.

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High-level, mathematically precise descriptions of the global organisation of complex metabolic networks are necessary for understanding the global structure of metabolic networks, the interpretation and integration of large amounts of biologic data (sequences, various -omics) and ultimately for rational design of therapies for disease processes. Metabolic networks are highly organised to execute their function efficiently while tolerating wide variation in their environment. These networks are constrained by physical requirements (e.g. conservation of energy, redox and small moieties) but are also remarkably robust and evolvable. The authors use well-known features of the stoichiometry of bacterial metabolic networks to demonstrate how network architecture facilitates such capabilities, and to develop a minimal abstract metabolism which incorporates the known features of the stoichiometry and respects the constraints on enzymes and reactions. This model shows that the essential functionality and constraints drive the tradeoffs between robustness and fragility, as well as the large-scale structure and organisation of the whole network, particularly high variability. The authors emphasise how domain specific constraints and tradeoffs imposed by the environment are important factors in shaping stoichiometry. Importantly, the consequence of these highly organised tradeoffs and tolerances is an architecture that has a highly structured modularity that is self-dissimilar and scale-rich.

Item Type:Article
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Doyle, J.0000-0002-1828-2486
Additional Information:© 2005 IEE. Paper first received 1st July and in revised form 7th October 2005.
Subject Keywords:highly optimised global organisation, bacterial metabolic networks, global structure, disease therapy, energy conservation, redox, stoichiometry, enzymes, robustness, fragility
Issue or Number:4
Record Number:CaltechAUTHORS:20110815-134554423
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Official Citation:Highly optimised global organisation of metabolic networks R. Tanaka, M. Csete, and J. Doyle, IEE Proc. Syst. Biol. 152, 179 (2005), DOI:10.1049/ip-syb:20050042
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24865
Deposited By: Tony Diaz
Deposited On:14 Oct 2011 20:47
Last Modified:09 Nov 2021 16:27

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