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Exploiting stochastic fluctuations to understand cellular processes and infer biochemical kinetics

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Abstract: Many biological processes in cells are complex yet sparsely characterized. Constructing models of such systems then often requires making many assumptions based on guesswork. Instead of ignoring or guessing unknown details in complex processes I will present universal balance relations to rigorously characterize stochastic fluctuations in incompletely specified systems. Specifying some features of a system while leaving everything else unspecified allows us to establish physical performance bounds for classes of intracellular processes. Additionally, we can turn general network invariants into experimental data analysis tools. For example, exploiting naturally occurring cell-to-cell variability allowed us to test specific hypotheses about gene expression, showing that observed fluctuations in E. coli contradict the majority of published models of stochastic gene expression.

This talk is part of the Computational and Systems Biology series.

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