Zabet, Nicolae Radu and Chu, Dominique F (2010) Stochasticity and Robustness in Bi-Stable Systems. In: 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE), 2010-06-18 - 2010-06-20.
Zabet, Nicolae Radu and Chu, Dominique F (2010) Stochasticity and Robustness in Bi-Stable Systems. In: 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE), 2010-06-18 - 2010-06-20.
Zabet, Nicolae Radu and Chu, Dominique F (2010) Stochasticity and Robustness in Bi-Stable Systems. In: 2010 4th International Conference on Bioinformatics and Biomedical Engineering (iCBBE), 2010-06-18 - 2010-06-20.
Abstract
The genetic bi-stable switch (toggle switch) consists of two genes which repress one another through their synthesised proteins. In the stochastic bi-stable case, the toggle switch exhibits noise induced flips. Using simulation based techniques, we identified three methods for reducing the random flipping probability, namely: (i) increasing the system size, (ii) increasing the synthesis rate, and (iii) increasing the Hill coefficient. Our heat-maps showed that for large parts of parameter space the toggle switch displays extremely low noise induced flipping probability, and consequently high robustness. We also analysed the noise analytically. The area of validity of the analytical approach was found to be constrained to low Hill coefficients and high synthesis rate (both conditions within biological realistic parameters). Most importantly, we observed that increasing the synthesis rate is more efficient in reducing the noise compared to the increase in system size, for systems affected by negative feedback. ©2010 Crown.
Item Type: | Conference or Workshop Item (Paper) |
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Additional Information: | Published proceedings: 2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 |
Subjects: | Q Science > QC Physics Q Science > QH Natural history > QH426 Genetics |
Divisions: | Faculty of Science and Health Faculty of Science and Health > Life Sciences, School of |
SWORD Depositor: | Unnamed user with email elements@essex.ac.uk |
Depositing User: | Unnamed user with email elements@essex.ac.uk |
Date Deposited: | 04 Feb 2016 19:37 |
Last Modified: | 12 Sep 2024 21:45 |
URI: | http://repository.essex.ac.uk/id/eprint/15119 |