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arXiv · 1308.0623

Asymptotic Cellular Growth Rate as the Effective Information Utilization Rate

Rami Pugatch·Naama Barkai·Tsvi Tlusty
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Abstract

We study the average asymptotic growth rate of cells in randomly fluctuating environments, with multiple viable phenotypes per environment. We show that any information processing strategy has an asymptotic growth rate, which is the sum of: (i) the maximal growth rate at the worst possible distribution of environments, (ii) relative information between the actual distribution of environments to the worst one, and (iii) information utilization rate, which is the information rate of the sensory devices minus the "information dissipation rate", the amount of information not utilized by the cell for growth. In non-stationary environments, we find that the optimal phenotypic switching times equally partition the information dissipation rate between consecutive switching intervals.

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Rami Pugatch, Naama Barkai, Tsvi Tlusty. 2014-03-12. Asymptotic Cellular Growth Rate as the Effective Information Utilization Rate. https://arxiv.org/abs/1308.0623

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