Sensitivity of mRNA Translation

TL;DR

This paper uses a mathematical model to analyze how small changes in different stages of mRNA translation affect the overall protein production rate, providing insights relevant to genomics and synthetic biology.

Contribution

It introduces a dynamic mean-field approximation approach to quantify translation sensitivity and derives exact formulas for specific cases, advancing understanding of translation regulation.

Findings

Derived closed-form expressions for translation rate sensitivity.

Identified key parameters influencing translation efficiency.

Discussed implications for genomics and synthetic biology.

Abstract

Using the dynamic mean-field approximation of the totally asymmetric simple exclusion process (TASEP), we investigate the effect of small changes in the initiation, exit, and elongation rates along the mRNA strand on the steady state protein translation rate. We focus on two special cases where exact closed-form expressions for the translation rate sensitivity can be derived. We discuss the ramifications of our results in the context of functional genomics, molecular evolution, and synthetic biology.