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Design and implementation of a biomolecular circuit for tracking protein concentration

de los Santos, Emmanuel L. C. and Hsiao, Victoria and Murray, Richard M. (2013) Design and implementation of a biomolecular circuit for tracking protein concentration. In: 2013 American Control Conference (ACC). IEEE , Piscataway, NJ, pp. 2290-2294. ISBN 978-1-4799-0177-7.

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This paper describes the design, modeling, synthesis and preliminary validation of a protein concentration regulator circuit. The circuit is designed to maintain the level of a target protein to a reference level, specified by the amount of another protein. This is implemented using a single negative feedback loop that inhibits the production of the target protein once its concentration is equal to the reference amount. A mathematical model consisting of a set of ODEs is derived from mass action laws and Hill function approximations of protein production. Steady-state analysis of the model is used to predict parameter sensitivity and experimental behavior. We implemented this circuit in E. coli using scaffold-based sequestration and transcriptional activation. Preliminary experimental results show the system matching predictions from our model and performing the expected task.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Hsiao, Victoria0000-0001-9297-1522
Murray, Richard M.0000-0002-5785-7481
Additional Information:© 2013 AACC. Research supported in part by the Benjamin M. Rosen Bioengineering Center, the California Institute of Technology, and the Institute for Collaborative Biotechnologies through grant W911NF-09-0001 from the U.S. Army Research Office. The content of the information does not necessarily reflect the position or the policy of the Government, and no official endorsement should be inferred. The authors would like to thank John E. Dueber and Weston R. Whitaker from the University of California, Berkeley, for providing the initial plasmid constructs, the E. coli strain WW62, and continuing experimental advice.
Funding AgencyGrant Number
Benjamin M. Rosen Bioengineering CenterUNSPECIFIED
Army Research Office (ARO)W911NF-09-0001
Record Number:CaltechAUTHORS:20131219-095517199
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Official Citation:de los Santos, E.L.C.; Hsiao, V.; Murray, R.M., "Design and implementation of a biomolecular circuit for tracking protein concentration," American Control Conference (ACC), 2013 , vol., no., pp.2290,2294, 17-19 June 2013 URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43088
Deposited By: Tony Diaz
Deposited On:23 Dec 2013 19:58
Last Modified:10 Nov 2021 16:32

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