Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/67354
Title: A simple genetically structured model of trp repressor-operator interactions
Authors: Koh, B.T. 
Yap, M.G.S. 
Issue Date: 1-Jan-1993
Source: Koh, B.T.,Yap, M.G.S. (1993-01-01). A simple genetically structured model of trp repressor-operator interactions. Biotechnology and Bioengineering 41 (7) : 707-714. ScholarBank@NUS Repository.
Abstract: A genetically structured mathematical model of the trp operon bases on known molecular interactions of aporepressor, corepressor, and inducer is proposed. The model simulates, both qualitatively and quantitatively, the influence of these regulatory species on the extent of repression and expression of cloned gene products. It shows that at low aporepressor concentration, full repression is not possible even with high tryptophan levels, resulting in leaky expression. Calculations based on the model enabled predictions of optimum levels of aporepressor and tryptophan for effective repression and, concurrently, the β-indoleacrylic acid concentrations required for induction for both low and high plasmid copy number clones. Using the model we attempted to provide explanations for seemingly anomalous and sometimes contradictory observations by researchers when working with the trp promoter.
Source Title: Biotechnology and Bioengineering
URI: http://scholarbank.nus.edu.sg/handle/10635/67354
ISSN: 00063592
Appears in Collections:Staff Publications

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