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Estimation of kinetic parameters of transcription from temporal single-RNA measurements

Gene expression dynamics in prokaryotes is largely controlled by the multi-step process of transcription initiation whose kinetics is subject to regulation. Since the number and duration of these steps cannot be currently measured in vivo, we propose a novel method for estimating them from time seri...

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Hauptverfasser: Zimmer, Christoph (VerfasserIn) , Häkkinen, Antti (VerfasserIn) , Ribeiro, André Strecht (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 2016
In: Mathematical biosciences
Year: 2015, Jahrgang: 271, Pages: 146-153
ISSN:1879-3134
DOI:10.1016/j.mbs.2015.10.001
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.mbs.2015.10.001
Verlag, lizenzpflichtig, Volltext: http://www.sciencedirect.com/science/article/pii/S0025556415001960
Volltext
Verfasserangaben:Christoph Zimmer, Antti Häkkinen, Andre S. Ribeiro

MARC

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520 |a Gene expression dynamics in prokaryotes is largely controlled by the multi-step process of transcription initiation whose kinetics is subject to regulation. Since the number and duration of these steps cannot be currently measured in vivo, we propose a novel method for estimating them from time series of RNA numbers in individual cells. We demonstrate the method’s applicability on measurements of fluorescence-tagged RNA molecules in Escherichia coli cells, and compare with a previous method. We show that the results of the two methods agree for equal data. We also show that, when incorporating additional data, the new method produces significantly different estimates, which are in closer agreement with qPCR measurements. Unlike the previous method, the new method requires no preprocessing of the RNA numbers, using maximal information from the RNA time series. In addition, it can use data outside of the observed RNA productions. Overall, the new method characterizes the transcription initiation process with enhanced detail. 
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