Team:Evry/Metabolism model

From 2013.igem.org

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To keep in mind the figure 1 presents the reactions composing the enterobacting production pathway.
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The Figure 1 presents the biochemical pathway for producing the enterobactin compound in E.coli.
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    <b>Figure 1:</b> Légende ici.
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<b>Figure 1:</b> Légende ici.
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  <p>Texte après l'image</p>
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As we can see there are
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As can be seen in the figure the pathway is 4 steps long and composed of six different enzymes. Hence there exists 4 possible metabolites which concentration may be limiting :
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<li>Chorismate</li>
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<li>Isochorismate</li>
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<li>2,3-dihydroxy-2,3-dihydrobenzoate</li>
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<li>2,3-dihydroxybenzoat</li>
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<h1>Goal</h1>
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We highlighted two main kind of interactions between the bacterial and our system :
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<li>The synthetic system interacts with the bacterial metabolism. Leading to scarcity of the metabolites involved in the pathway for the other (possibly essential) metabolic reactions of the cell.</li>
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<li>The other way round, the metabolic reactions could prevent our synthetic system to work as expected by limiting the quantity of the involved metabolites available.</li>
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Revision as of 23:14, 4 October 2013

Iron coli project

Flux modeling

In this part of our modeling work we focus on genome scale analysis of the enterobactin production pathway. A major concern about our system is its non-orthogonality with the natural metabolic network of the cells : E.Coli already possesses the genes for producing enterobactins. Therefore we wanted to assess the possible interactions between our system and the bacterial metabolism.

Observations

This model stems from the following observations :
  • Enterobactin production pathway is a metabolic process;
  • Any of the involved metabolites may limit the rate of the reactions.

The Figure 1 presents the biochemical pathway for producing the enterobactin compound in E.coli.

Nom Lien
Figure 1: Légende ici.

As can be seen in the figure the pathway is 4 steps long and composed of six different enzymes. Hence there exists 4 possible metabolites which concentration may be limiting :

  • Chorismate
  • Isochorismate
  • 2,3-dihydroxy-2,3-dihydrobenzoate
  • 2,3-dihydroxybenzoat

Goal

We highlighted two main kind of interactions between the bacterial and our system :
  1. The synthetic system interacts with the bacterial metabolism. Leading to scarcity of the metabolites involved in the pathway for the other (possibly essential) metabolic reactions of the cell.
  2. The other way round, the metabolic reactions could prevent our synthetic system to work as expected by limiting the quantity of the involved metabolites available.
Enterobactin metabolic network

Overview

Assumptions

Model Description

Results

Conclusion

References: