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- W2161112329 abstract "The role of cell size and shape in controlling local intracellular signaling reactions, and how this spatial information originates and is propagated, is not well understood. We have used partial differential equations to model the flow of spatial information from the β-adrenergic receptor to MAPK1,2 through the cAMP/PKA/B-Raf/MAPK1,2 network in neurons using real geometries. The numerical simulations indicated that cell shape controls the dynamics of local biochemical activity of signal-modulated negative regulators, such as phosphodiesterases and protein phosphatases within regulatory loops to determine the size of microdomains of activated signaling components. The model prediction that negative regulators control the flow of spatial information to downstream components was verified experimentally in rat hippocampal slices. These results suggest a mechanism by which cellular geometry, the presence of regulatory loops with negative regulators, and key reaction rates all together control spatial information transfer and microdomain characteristics within cells." @default.
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- W2161112329 date "2008-05-01" @default.
- W2161112329 modified "2023-10-16" @default.
- W2161112329 title "Cell Shape and Negative Links in Regulatory Motifs Together Control Spatial Information Flow in Signaling Networks" @default.
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- W2161112329 doi "https://doi.org/10.1016/j.cell.2008.04.025" @default.
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