Multi-species stochastic models: small RNA regulation of gene expression

Details Multi-species stochastic models: small RNA regulation of gene expression Multi-species stochastic models: small RNA regulation of gene expression

2009-10-13

arxiv.org/abs/0910.2278v1

Biology

Quantitative Biology

Populations and Evolution

Scientific paper

The processes, resulting in the transcription of RNA, are intrinsically noisy. It was observed experimentally that the synthesis of mRNA molecules is driven by short, burst-like, events. An accurate prediction of the protein level often requires one to take these fluctuations into account. Here, we consider the stochastic model of gene expression regulated by small RNAs. Small RNA post-transcriptional regulation is achieved by base-pairing with mRNA. We show that in a strong pairing limit the mRNA steady state distribution can be determined exactly. The obtained analytical results reveal large discrepancies in the deterministic description, due to transcriptional bursting. The proposed approach is expected to work for a large variety of multi-species models.

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