The Effect of Stochastic Bursting on Biological Clock Precision

James Maclaurin, Abhyudai Singh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We study stochasticity in gene transcription oscillations. The oscillations in the protein concentration occur due to stochastic bursting of gene transcription being modulated by a delayed negative feedback. The oscillator dynamics is such that the mean dynamics (which the system converges towards in the large size limit) supports an attracting limit cycle. However, since there are only a finite-number of particles in biologically-realistic systems, this results in stochastic effects which perturb the system away from the limit cycle. We define an isochronal phase for the oscillation, and argue that it allows a much more powerful analysis than the Linear Noise Approximation. We demonstrate that the isochronal phase is accurate for very long periods of time: this results from the attracting dynamics of the limit cycle damping down stochasticity from the finite-size effects. Furthermore, because the system stays close to the oscillator for very long periods of time, we can obtain an estimate for the increase in errors over time due to the stochastic nature of the chemical reactions. We investigate numerically how various parametric regimes affect the resulting limit cycle dynamics.

Original languageEnglish (US)
Title of host publicationEuropean Control Conference 2020, ECC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1135-1140
Number of pages6
ISBN (Electronic)9783907144015
StatePublished - May 2020
Event18th European Control Conference, ECC 2020 - Saint Petersburg, Russian Federation
Duration: May 12 2020May 15 2020

Publication series

NameEuropean Control Conference 2020, ECC 2020

Conference

Conference18th European Control Conference, ECC 2020
CountryRussian Federation
CitySaint Petersburg
Period5/12/205/15/20

All Science Journal Classification (ASJC) codes

  • Artificial Intelligence
  • Decision Sciences (miscellaneous)
  • Control and Systems Engineering
  • Mechanical Engineering
  • Computational Mathematics
  • Control and Optimization

Fingerprint Dive into the research topics of 'The Effect of Stochastic Bursting on Biological Clock Precision'. Together they form a unique fingerprint.

Cite this