Difference between revisions of "Team:Valencia UPV/Modelling"

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<h2>First steps<br />
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<h2>Overview<br />
 
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<p>We started by figuring out how it should work in a tree diagram, keeping the idea simple:</p><br/>
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<p>When new things are created, there is no clue about its behavior, which causes uncertainty. This is the reason why modeling has become a significant part of any project. </p>
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<img class="image left" style="width:19em" src="https://static.igem.org/mediawiki/2015/a/a8/Alpha.png" alt="simple circuit" /></span>
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<img style="width:28em" class="image right" src="https://static.igem.org/mediawiki/2015/e/e5/Valencia_upv_tablaverdad.jpg" alt="truth table" /></span>
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<p style="text-align:right;font-size:15px;margin-right: 10em;">True table of our model</p>
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<p style="text-align:center;font-weight:bold">
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2 pulses <br/>
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4 possible combinations <br/>
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4 different products <br/>
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<p>We started by figuring out how it should work in a tree diagram, keeping the idea simple:</p>
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<header id="scrollsect1" class="major">
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<h3 style="text-align:left">Overview<br />
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<div style="text-align: center;"><img width=600em src="https://static.igem.org/mediawiki/2015/9/93/Valencia_upv_blackboxcircuit.png" usemap="#dnamap"></div>
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<p style="text-align:center;font-size:big">Our idea is to model a biological multiplexor that responds to two different light pulses.</p>
 
 
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<h2>The circuit<br />
 
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<div style="text-align: center;"><img width="700px" height="600px" src="https://static.igem.org/mediawiki/2015/a/a6/Valencia_upv_circuitkey.png"></div>
 
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<h2>Expression levels<br />
 
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<h3 style="text-align:left">Constitutive expression<br />
 
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Proteins A, B, C and D, are used to control the expression of next level. As they keep being produced before light pulses are given to the organism, we will assume that their concentrations have reached their balanced values. This assumption lets us simplify several expressions from this first level, as we will demonstrate in the development of the mathemathical model.
 
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<div style="text-align: center;"><img width=600em src="https://static.igem.org/mediawiki/2015/6/61/Valencia_upv_equation2.png"></div>
 
<p style="text-align:right;font-size:big">same for B,C,D and E.</p>
 
<div style="text-align: center;"><img width=400em src="https://static.igem.org/mediawiki/2015/7/77/Valencia_upv_equation3.png"></div>
 
</p>
 
 
<p id="scrollsect4" style="color:white">.</p>
 
<div style="text-align:right"><a left href="https://2015.igem.org/Team:Valencia_UPV/Modelling#scrollsect2" class="button alt">Back to circuit</a></div>
 
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<h3 style="text-align:left">Regulated expression: 2nd level<br />
 
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<span class="image right"><img width="500em" src="https://static.igem.org/mediawiki/2015/e/e5/Valencia_upv_equation4.png"></span>
 
<div style="margin-right:40px">When A (E-PIF6), B (PhyB-VP16), C (Gal4-KDronpa) and D (NDronpa-VP16) are pro- duced, they interact with the operator binding sites OBD1 (in gE, gF and gG) and OBD2 (in gH, gI and gJ). Thus, proteins produced in previous levels, regulate the expression of the following ones. Light induced transcription, is due to the activacion of proteins B and D, whose structures change according to a certain light wavelenght. Theoretically, only if B* (activated) binds A (which is already attached to the genes), proteins E, F and G will be produced. On the other hand, it occurs similarly with D*, C and proteins H, I and J. The symbol ”+”, makes reference to those genes which can be transcripted because recombinases have not bind to them. </div> <br/>
 
  
<a href="https://2015.igem.org/Team:Valencia_UPV/Modelling#scrollsect2" class="button alt">Back to circuit</a>
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<img src=https://static.igem.org/mediawiki/2015/9/9a/Valencia_upv_overviewcircuito.png>
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<p>Basically, our aim is the biological design of a decoder that only expresses the codified genetic information when, where and which is desired by the user. The biological components that allow us this implementation in living organisms are two switches, two recombinases and a library of different binding domains. All those elements have been coordinated in this cascade of three different levels.</p>
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<p>Our deterministic model uses mathematical information contained in its equations, in order to provide results that depict the behavior of our device. </p>
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<img src=https://static.igem.org/mediawiki/2015/3/3c/Valencia_upv_overviewdetmodel.png>
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<p>After deterministic model, it is time to test our biological machine in different conditions. </p>
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<img src=https://static.igem.org/mediawiki/2015/d/db/Valencia_upv_overviewsimulations.png>
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<p>As organisms are supposed to be in a closed device, environmental variability was not the critical point. We have analyzed the influence of different color combinations of light, duration of those, numbers of gene copies and values of tetramerization. </p>
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<p>One of the main points when innovative devices are being tested, is “how”. How does AladDNA behave? This is the main question that we want to answer with our modeling task.</p>
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<p>Take a sit and enjoy this wander in our mathematical chaos!</p>
 
 
 
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Revision as of 13:54, 17 September 2015

Link title Valencia UPV iGEM 2015

Overview


When new things are created, there is no clue about its behavior, which causes uncertainty. This is the reason why modeling has become a significant part of any project.

We started by figuring out how it should work in a tree diagram, keeping the idea simple:

Basically, our aim is the biological design of a decoder that only expresses the codified genetic information when, where and which is desired by the user. The biological components that allow us this implementation in living organisms are two switches, two recombinases and a library of different binding domains. All those elements have been coordinated in this cascade of three different levels.

Our deterministic model uses mathematical information contained in its equations, in order to provide results that depict the behavior of our device.

After deterministic model, it is time to test our biological machine in different conditions.

As organisms are supposed to be in a closed device, environmental variability was not the critical point. We have analyzed the influence of different color combinations of light, duration of those, numbers of gene copies and values of tetramerization.

One of the main points when innovative devices are being tested, is “how”. How does AladDNA behave? This is the main question that we want to answer with our modeling task.

Take a sit and enjoy this wander in our mathematical chaos!