Journal
JOURNAL OF THEORETICAL BIOLOGY
Volume 355, Issue -, Pages 185-193Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jtbi.2014.04.011
Keywords
Emergence; Flux coupling analysis; FCA; Hypergraph; Flow networks
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Funding
- University of Tehran [28791/1/1]
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Emergent properties in systems biology are those which arise only when the biological system passes a certain level of complexity. In this study, we introduce some of the emergent properties which appear in the constraint-based analysis of metabolic networks. These properties generally appear as a result of existence of hfdeyperarcs and irreversible reactions in networks. Here, we present examples of metabolic networks in which there exist at least two reactions whose fluxes cannot be written as products and/or ratios of the stoichiometric coefficients of the network. We show that any such network contains at least one hyperarc. Additionally, we prove that partial coupling cannot appear in consistent metabolic networks with less than four reactions, or with less than three irreversible reactions, or without hyperarc(s). (C) 2014 Elsevier Ltd. All rights reserved.
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