Dynamics of gene expression under feedback

Details Dynamics of gene expression under feedback Dynamics of gene expression under feedback

2008-07-22

arxiv.org/abs/0807.3521v1

Biology

Quantitative Biology

Cell Behavior

Scientific paper

Gene expression is a stochastic process governed by the presence of specific transcription factors. Here we study the dynamics of gene expression in the presence of feedback, where a gene regulates its own expression. The nonlinear coupling between input and output of gene expression can generate a dynamics different from simple scenarios such as the Poisson process. This is exemplified by our findings for the time intervals over which genes are transcriptionally active and inactive. We apply our results to the lac system in E. coli, where parametric inference on experimental data results in a broad distribution of gene activity intervals.

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