Biology – Quantitative Biology – Molecular Networks
Scientific paper
2009-02-24
Biology
Quantitative Biology
Molecular Networks
7 pages, 4 figures, To appear in Int. J. Bifurcation and Chaos, typos were corrected and 2 references were added
Scientific paper
We investigate the dynamical properties of the transcriptional regulation of gene expression in the yeast Saccharomyces Cerevisiae within the framework of a synchronously and deterministically updated Boolean network model. By means of a dynamically determinant subnetwork, we explore the robustness of transcriptional regulation as a function of the type of Boolean functions used in the model that mimic the influence of regulating agents on the transcription level of a gene. We compare the results obtained for the actual yeast network with those from two different model networks, one with similar in-degree distribution as the yeast and random otherwise, and another due to Balcan et al., where the global topology of the yeast network is reproduced faithfully. We, surprisingly, find that the first set of model networks better reproduce the results found with the actual yeast network, even though the Balcan et al. model networks are structurally more similar to that of yeast.
Kabakcioglu Alkan
Tugrul Murat
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