Mathematical modeling of lac operon regulation dynamics

2014 ◽  
Author(s):  
Ling Gao ◽  
Yutian Lin ◽  
Huibin Lin ◽  
Xiaoyi Jia ◽  
Jianqun Lin ◽  
...  
Keyword(s):  
Mathematical Modeling ◽  
Lac Operon ◽  
Operon Regulation

lac Operon Regulation

2021 ◽  
Author(s):  
Liskin Swint-Kruse ◽  
Daniel J. Parente ◽  
Kathleen S. Matthews
Keyword(s):  
Lac Operon ◽  
Operon Regulation

scholarly journals Comparison of the theoretical and real-world evolutionary potential of a genetic circuit.

2014 ◽  
Author(s):  
Manuel Razo-Mejia ◽  
James Boedicker ◽  
Daniel Jones ◽  
Alexander de Luna ◽  
Justin Block Kinney ◽  
...  
Keyword(s):  
Gene Expression ◽  
Gene Regulation ◽  
Large Scale ◽  
Point Mutations ◽  
Promoter Sequence ◽  
Binding Energies ◽  
Genetic Circuit ◽  
Lac Operon ◽  
Evolutionary Potential ◽  
Operon Regulation

With the development of next-generation sequencing technologies, many large scale experimental efforts aim to map genotypic variability among individuals. This natural variability in populations fuels many fundamental biological processes, ranging from evolutionary adaptation and speciation to the spread of genetic diseases and drug resistance. An interesting and important component of this variability is present within the regulatory regions of genes. As these regions evolve, accumulated mutations lead to modulation of gene expression, which may have consequences for the phenotype. A simple model system where the link between genetic variability, gene regulation and function can be studied in detail is missing. In this article we develop a model to explore how the sequence of the wild-type lac promoter dictates the fold change in gene expression. The model combines single-base pair resolution maps of transcription factor and RNA polymerase binding energies with a comprehensive thermodynamic model of gene regulation. The model was validated by predicting and then measuring the variability of lac operon regulation in a collection of natural isolates. We then implement the model to analyze the sensitivity of the promoter sequence to the regulatory output, and predict the potential for regulation to evolve due to point mutations in the promoter region.

Cerebral Blood Circulation in Premature Infants by Means of Mathematical Modeling

2015 ◽  
Vol 46 (S 01) ◽  
Author(s):  
R. Lampe ◽  
N. Botkin ◽  
V. Turova ◽  
T. Blumenstein ◽  
A. Alves-Pinto
Keyword(s):  
Mathematical Modeling ◽  
Premature Infants ◽  
Blood Circulation ◽  
Cerebral Blood Circulation
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