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Retroactivity to the input in complex gene transcription networks

Author(s)
Gyoergy, Andras; Del Vecchio, Domitilla
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Abstract
Synthetic biology is a bottom-up engineering discipline: biological modules are systematically designed with predefined behavior and then combined to build up larger circuits. Although the modules produce the desired behavior in isolation, they fail to operate properly when they are connected due to retroactivity, an effect which extends the notion of impedance to biomolecular systems. Despite playing a central role, retroactivity is not yet characterized in complex gene transcription networks. In this paper, we mathematically describe and quantify this effect. This result is obtained by applying singular perturbation on the finite time interval. We identify the biomolecular counterpart of impedance and introduce the effective retroactivity to the input of a gene. Furthermore, we provide a theorem describing how modules affect each other when connected. We restore modular composition of synthetic circuits by extending the characterization of modules with internal and input retroactivities. We illustrate the implications of the results by investigating crosstalk in a simple genetic system.
Date issued
2012-12
URI
http://hdl.handle.net/1721.1/119169
Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science; Massachusetts Institute of Technology. Department of Mechanical Engineering
Journal
2012 IEEE 51st Conference on Decision and Control (CDC)
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Gyorgy, Andras, and Domitilla Del Vecchio. “Retroactivity to the Input in Complex Gene Transcription Networks.” 2012 IEEE 51st IEEE Conference on Decision and Control (CDC) (December 2012), Maui, HI, USA, Institute of Electrical and Electronics Engineers (IEEE), 2012. © 2012 Institute of Electrical and Electronics Engineers (IEEE)
Version: Author's final manuscript
ISBN
978-1-4673-2066-5
978-1-4673-2065-8
978-1-4673-2063-4
978-1-4673-2064-1
ISSN
0191-2216
0743-1546
0743-1546

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