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- W4380994390 abstract "Compartmentalised biochemical reactions are a ubiquitous building block of biological systems. The interplay between chemical and compartmental dynamics can drive rich and complex dynamical behaviors that are difficult to analyse mathematically -- especially in the presence of stochasticity. We have recently proposed an effective moment equation approach to study the statistical properties of compartmentalised biochemical systems. So far, however, this approach is limited to polynomial rate laws and moreover, it relies on suitable moment closure approximations, which can be difficult to find in practice. In this work we propose a systematic method to derive closed moment dynamics for compartmentalised biochemical systems. We show that for the considered class of systems, the moment equations involve expectations over functions that factorize into two parts, one depending on the molecular content of the compartments and one depending on the compartment number distribution. Our method exploits this structure and approximates each function with suitable polynomial expansions, leading to a closed system of moment equations. We demonstrate the method using three systems inspired by cell populations and organelle networks and study its accuracy across different dynamical regimes." @default.
- W4380994390 created "2023-06-17" @default.
- W4380994390 creator A5046748552 @default.
- W4380994390 creator A5075017149 @default.
- W4380994390 date "2023-06-15" @default.
- W4380994390 modified "2023-09-26" @default.
- W4380994390 title "A local polynomial moment approximation for compartmentalised biochemical systems" @default.
- W4380994390 doi "https://doi.org/10.48550/arxiv.2306.09186" @default.
- W4380994390 hasPublicationYear "2023" @default.
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