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Computational modeling of the dynamics of the MAP kinase cascade activated by surface and internalized EGF receptors.

Nature biotechnology | Apr 29, 2002

http://www.ncbi.nlm.nih.gov/pubmed/11923843

We present a computational model that offers an integrated quantitative, dynamic, and topological representation of intracellular signal networks, based on known components of epidermal growth factor (EGF) receptor signal pathways. The model provides insight into signal-response relationships between the binding of EGF to its receptor at the cell surface and the activation of downstream proteins in the signaling cascade. It shows that EGF-induced responses are remarkably stable over a 100-fold range of ligand concentration and that the critical parameter in determining signal efficacy is the initial velocity of receptor activation. The predictions of the model agree well with experimental analysis of the effect of EGF on two downstream responses, phosphorylation of ERK-1/2 and expression of the target gene, c-fos.

Pubmed ID: 11923843 RIS Download

Mesh terms: Computational Biology | Computer Simulation | Down-Regulation | Endocytosis | Enzyme Activation | Epidermal Growth Factor | Genes, fos | HeLa Cells | Humans | Kinetics | MAP Kinase Signaling System | Mitogen-Activated Protein Kinases | Models, Biological | Receptor, Epidermal Growth Factor | Software

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