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Deriving Behavior of Boolean Bioregulatory Networks from Subnetwork Dynamics

Please always quote using this URN:urn:nbn:de:0296-matheon-5313
  • In the well-known discrete modeling framework developed by R. Thomas, the structure of a biological regulatory network is captured in an interaction graph, which, together with a set of Boolean parameters, gives rise to a state transition graph describing all possible dynamical behaviors. For complex networks the analysis of the dynamics becomes more and more difficult, and efficient methods to carry out the analysis are needed. In this paper, we focus on identifying subnetworks of the system that govern the behavior of the system as a whole. We present methods to derive trajectories and attractors of the network from the dynamics suitable subnetworks display in isolation. In addition, we use these ideas to link the existence of certain structural motifs, namely circuits, in the interaction graph to the character and number of attractors in the state transition graph, generalizing and refining results presented in \cite{AB07}. Lastly, we show for a specific class of networks that all possible asymptotic behaviors of networks in that class can be derived from the dynamics of easily identifiable subnetworks.

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Metadaten
Author:Heike Siebert
URN:urn:nbn:de:0296-matheon-5313
Referee:Alexander Bockmayr
Document Type:Preprint, Research Center Matheon
Language:English
Date of first Publication:2008/10/30
Release Date:2008/10/30
Institute:Freie Universität Berlin
Preprint Number:527
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