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Noise in gene expression may be a choice of cellular system

Author

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  • Rajesh Karmakar

    (Ramakrishna Mission Vidyamandira, Belur Math, Howrah 711202, West Bengal, India)

Abstract

Gene expression and its regulation is a nonequilibrium stochastic process. Different molecules are involved in several biochemical steps in this process with low copies. It is observed that the stochasticity in biochemical processes is mainly due to the low copy number of the molecules present in the system. Several studies also show that the nonequilibrium biochemical processes require energy cost. But cellular system has developed itself through natural evolution by minimizing energy cost for optimum output. Here, we study the role of stochasticity qualitatively in a network of two genes using stochastic simulation method and approximately measure the energy consumption for the gene expression process. We find that the noise in gene expression process reduces the energy cost of protein synthesis. Therefore, we argued that the stochasticity in gene expression may be a choice of cellular system for protein synthesis with minimum energy cost.

Suggested Citation

  • Rajesh Karmakar, 2019. "Noise in gene expression may be a choice of cellular system," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 30(02n03), pages 1-17, February.
    • Handle: RePEc:wsi:ijmpcx:v:30:y:2019:i:02n03:n:s0129183119500141
    DOI: 10.1142/S0129183119500141
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