Title |
A model reduction method for biochemical reaction networks
|
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Published in |
BMC Systems Biology, May 2014
|
DOI | 10.1186/1752-0509-8-52 |
Pubmed ID | |
Authors |
Shodhan Rao, Arjan van der Schaft, Karen van Eunen, Barbara M Bakker, Bayu Jayawardhana |
Abstract |
In this paper we propose a model reduction method for biochemical reaction networks governed by a variety of reversible and irreversible enzyme kinetic rate laws, including reversible Michaelis-Menten and Hill kinetics. The method proceeds by a stepwise reduction in the number of complexes, defined as the left and right-hand sides of the reactions in the network. It is based on the Kron reduction of the weighted Laplacian matrix, which describes the graph structure of the complexes and reactions in the network. It does not rely on prior knowledge of the dynamic behaviour of the network and hence can be automated, as we demonstrate. The reduced network has fewer complexes, reactions, variables and parameters as compared to the original network, and yet the behaviour of a preselected set of significant metabolites in the reduced network resembles that of the original network. Moreover the reduced network largely retains the structure and kinetics of the original model. |
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