Exact results for gene-expression models with general waiting-time distributions

Jinqiang Zhang, Aimin Chen, Huahai Qiu, Jiajun Zhang, Tianhai Tian, and Tianshou Zhou
Phys. Rev. E 109, 024119 – Published 20 February 2024

Abstract

Complex molecular details of transcriptional regulation can be coarse-grained by assuming that reaction waiting times for promoter-state transitions, the mRNA synthesis, and the mRNA degradation follow general distributions. However, how such a generalized two-state model is analytically solved is a long-standing issue. Here we first present analytical formulas of burst-size distributions for this model. Then, we derive an iterative equation for the mRNA moment-generating function, by which mRNA raw and binomial moments of any order can be conveniently calculated. The analytical results obtained in the special cases of phase-type waiting-time distributions not only provide insights into the mechanisms of complex transcriptional regulations but also bring conveniences for experimental data-based statistical inferences.

  • Received 10 July 2023
  • Accepted 19 January 2024
  • Corrected 28 February 2024

DOI:https://doi.org/10.1103/PhysRevE.109.024119

©2024 American Physical Society

Physics Subject Headings (PhySH)

Statistical Physics & ThermodynamicsInterdisciplinary PhysicsPhysics of Living Systems

Corrections

28 February 2024

Correction: Incorrect information was used for the affiliation of the fifth author. A new affiliation and affiliation indicator have been inserted.

Authors & Affiliations

Jinqiang Zhang1, Aimin Chen2, Huahai Qiu3, Jiajun Zhang1,4, Tianhai Tian5, and Tianshou Zhou1,4,*

  • 1School of Mathematics, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China
  • 2School of Mathematics and Statistics, Henan University, Kaifeng 475004, China
  • 3School of Mathematics and Computers, Wuhan Textile University, Wuhan 430200, People's Republic of China
  • 4Key Laboratory of Computational Mathematics, Guangdong Province, Guangzhou 510275, People's Republic of China
  • 5School of Mathematics, Monash University, Clayton 3800, Australia

  • *Author to whom correspondence should be addressed: mcszhtsh@mail.sysu.edu.cn

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Issue

Vol. 109, Iss. 2 — February 2024

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