Dynamic re-wiring of protein interaction: The case of transactivation

Details Dynamic re-wiring of protein interaction: The case of transactivation Dynamic re-wiring of protein interaction: The case of transactivation

2006-09-10

arxiv.org/abs/q-bio/0609014v1

Biology

Quantitative Biology

Molecular Networks

4 pages; presented at NIPS 2004 workshop

Scientific paper

We are looking at local protein interaction networks from the perspective of directed, labeled graphs with quantitative values for monotonic changes in concentrations. These systems can be used to perform stability analysis for a stable attractor, given initial values. They can also show re-configuration of whole system states by dynamic insertion of links, given specific patterns of input. The latter issue seems particularly relevant for the concept of multistability in cellular memory. We attempt to show that this level of analysis is well-suited for a number of relevant biological subsystems, such as transactivation in cardiac myocytes or G-protein coupling to adrenergic receptors. In particular, we analyse the 'motif' of an "overflow gate" as a concentration-dependent system reconfiguration.

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