Team:Imperial College London/Drylab/M1/Protein production/Analysis
From 2009.igem.org
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[Introduce system in the absence of IPTG here] | [Introduce system in the absence of IPTG here] | ||
- | [ | + | [http://openwetware.org/wiki/IGEM:IMPERIAL/2009/M1/Modelling/Analysis/Detailed click here for explanation of the equations and parameters] or click |
+ | [https://2009.igem.org/Team:Imperial_College_London/Drylab/M1/Protein_production/Analysis/Detailed here] | ||
*When IPTG is introduced the system becomes: | *When IPTG is introduced the system becomes: | ||
[Introduce full system with IPTG included] and expansion to the model. | [Introduce full system with IPTG included] and expansion to the model. | ||
[link] | [link] | ||
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+ | ==Model Predictions== | ||
{{Imperial/09/TemplateBottom}} | {{Imperial/09/TemplateBottom}} |
Latest revision as of 15:18, 14 September 2009
Contents |
Protein Production
Model Assumptions
- LacI assumptions:
- The lac operon represses by constitutively synthesizing the LacI gene product [ref1].
- Here we have assumed that all the other complicated dynamical pathways are at dynamic equilibrium [ref2], and we are only considering the LacI gene.
- If these effects were included, the dynamics of the entire system will be more complicated, and the outcome of the model will be different.
- In a culture grown overnight, levels of LacI expression will have reached steady state. We can assume that this is the case before we add in IPTG.
- IPTG assumptions:
- LacI and IPTG undergo a secondary set of reactions when IPTG is added in. We assume that 1 molecule of IPTG binds to 1 molecule of LacI, creating an intermediate reaction complex:
- We also assume that the concentration of IPTG we put in is below the threshold of toxicity that could significantly start killing our cells.
- [http://openwetware.org/wiki/IGEM:IMPERIAL/2009/M1/Modelling/Analysis/literatureIPTG Literature review on IPTG]
- In this model we have neglected the degradation rate of IPTG and also of the [IPTG-LacI] complex.
The model
We can describe the behavior of the system with 4 ODEs. In this system, the first two equations describe the expression of LacI protein, and these will be linked to how it represses production of the protein of interest.
- In the absence of IPTG the system becomes:
[Introduce system in the absence of IPTG here] [http://openwetware.org/wiki/IGEM:IMPERIAL/2009/M1/Modelling/Analysis/Detailed click here for explanation of the equations and parameters] or click here
- When IPTG is introduced the system becomes:
[Introduce full system with IPTG included] and expansion to the model. [link]
Model Predictions