Dynamical model fitting to a synthetic positive feedback circuit in

E. coli biology computing circuit feedback complex dynamics differential equations dynamical model fitting feedback genetics modular genetic components ordinary differential equation model phage shock promoter positive feedback circuit synthetic biology synthetic positive feedback circuit time series time‐series data

Journal

Engineering biology
ISSN: 2398-6182
Titre abrégé: Eng Biol
Pays: United States
ID NLM: 9918539388906676

Informations de publication

Date de publication:
Jun 2020
Historique:
received: 21 04 2020
revised: 22 05 2020
accepted: 22 05 2020
entrez: 27 3 2023
pubmed: 23 6 2020
medline: 23 6 2020
Statut: epublish

Résumé

Applying the principles of engineering to Synthetic Biology relies on the development of robust and modular genetic components, as well as underlying quantitative dynamical models that closely predict their behaviour. This study looks at a simple positive feedback circuit built by placing filamentous phage secretin pIV under a phage shock promoter. A single-equation ordinary differential equation model is developed to closely replicate the behaviour of the circuit, and its response to inhibition by TetR. A stepwise approach is employed to fit the model's parameters to time-series data for the circuit. This approach allows the dissection of the role of different parameters and leads to the identification of dependencies and redundancies between parameters. The developed genetic circuit and associated model may be used as a building block for larger circuits with more complex dynamics, which require tight quantitative control or tuning.

Identifiants

pubmed: 36970395
doi: 10.1049/enb.2020.0009
pii: ENB2BF00029
pmc: PMC9996705
doi:

Types de publication

Journal Article

Langues

eng

Pagination

25-31

Informations de copyright

© 2020 The Institution of Engineering and Technology.

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Auteurs

Jure Tica (J)

Department of Life Sciences Imperial College London London SW7 2AZ UK.

Tong Zhu (T)

Department of Life Sciences Imperial College London London SW7 2AZ UK.

Mark Isalan (M)

Department of Life Sciences Imperial College London London SW7 2AZ UK.

Classifications MeSH