Team:INSA Toulouse/contenu/project/overview

From 2013.igem.org

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During our brainstorming meetings to define our iGEM project, we realized that various arithmetic operations were present in many cellular systems, like intracellular regulations and controls, or even in the control of metabolic pathways. We therefore decided to create a n-bit bacterial full adder which could be operated by the user, and able to transmit a carry if needed. Considering that some of the previous iGEM projects tackled the bacterial adder concept, and using new systems of logic recombinatorial gates, we aimed to create a robust and strong device in a bacterial chassis. We also wanted to demonstrate that recombination-based gates represent a quite simple yet efficient way to build genetic logic gates that could be used further to design pure genetic devices.</p>
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During our brainstorming meetings to decide our iGEM project many ideas about building artificial regulations came out. We realized that for most of these systems, various arithmetic operations exist in cellular systems but are highly specific and certainly not prone to do real mathematical operations. We therefore decided to create a n-bit bacterial full adder which could be operated by the user and able to transmit a carry if needed. Considering that some of the previous iGEM projects tackled the bacterial adder concept, we envisioned using a new strategy that has several advantages: recombination based logic gates. The most important goals and achievments would be to demonstrate that recombination-based switches represent simple yet highly efficient genetic logic gates modules that can be further integrated into more complex genetic devices. Besides the full adder idea, these genetic devices should lead to substantial progresses in the design of artificially regulated synthetic pathways. </p>
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   <h2 class="title2">From TI83+ to <i>E.calculus</i></h2>
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   <h2 class="title2">From TI83+ to <i>E. calculus</i></h2>
   <p class="texte">An electronic full-adder consists of the association of 5 logic gates (2 XOR gates, 2 AND gates, and 1 OR gate) which are able to receive 3 input signals (2 input bits and the last stage carry) and give the right answer to the user. <a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/full-adder">(View "Full Adder" Part)</a></li>
   <p class="texte">An electronic full-adder consists of the association of 5 logic gates (2 XOR gates, 2 AND gates, and 1 OR gate) which are able to receive 3 input signals (2 input bits and the last stage carry) and give the right answer to the user. <a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/full-adder">(View "Full Adder" Part)</a></li>
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   <img src="https://static.igem.org/mediawiki/2013/9/9b/400px-Full_Adder.png" class="imgcontent" />
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   <p class="texte">With <i>E.calculus</i>, we also tried to transpose this electronic device into a genetic device (system) based on recombination principle. We chose to use blue and red light as bit inputs <a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/input">(View "Input" Part)</a>, and a diffusive molecule for the carry <a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/carry">(View "Carry" Part)</a> . The answer should be readable by the manipulators, that is why we chose to use a red pigment <a href="<a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/output">(View "Output" Part)</a>, visible by human eyes at a low concentration.</p>
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   <p class="texte">With <i>E. calculus</i>, we also tried to link the gate genetic devices to a semi-artificial input system that uses blue and red light as the input bits<a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/input">(View "Input" Part)</a>, and a diffusive molecule, acyl homoserine lactone (AHL) for the carry <a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/carry">(View "Carry" Part)</a> . We also wanted that the results of the various operations could be easily readable by experimentators. We then chose a clearly visible output pigment: the Red Fluorescent Protein (RFP)<a href="<a href="https://2013.igem.org/Team:INSA_Toulouse/contenu/project/biological_construction/output">(View "Output" Part)</a>, visible by human eyes, even at a low concentration.</p>

Revision as of 07:24, 27 September 2013

logo


Overview

Why E.calculus ?

During our brainstorming meetings to decide our iGEM project many ideas about building artificial regulations came out. We realized that for most of these systems, various arithmetic operations exist in cellular systems but are highly specific and certainly not prone to do real mathematical operations. We therefore decided to create a n-bit bacterial full adder which could be operated by the user and able to transmit a carry if needed. Considering that some of the previous iGEM projects tackled the bacterial adder concept, we envisioned using a new strategy that has several advantages: recombination based logic gates. The most important goals and achievments would be to demonstrate that recombination-based switches represent simple yet highly efficient genetic logic gates modules that can be further integrated into more complex genetic devices. Besides the full adder idea, these genetic devices should lead to substantial progresses in the design of artificially regulated synthetic pathways.

From TI83+ to E. calculus

An electronic full-adder consists of the association of 5 logic gates (2 XOR gates, 2 AND gates, and 1 OR gate) which are able to receive 3 input signals (2 input bits and the last stage carry) and give the right answer to the user. (View "Full Adder" Part)

With E. calculus, we also tried to link the gate genetic devices to a semi-artificial input system that uses blue and red light as the input bits(View "Input" Part), and a diffusive molecule, acyl homoserine lactone (AHL) for the carry (View "Carry" Part) . We also wanted that the results of the various operations could be easily readable by experimentators. We then chose a clearly visible output pigment: the Red Fluorescent Protein (RFP)(View "Output" Part), visible by human eyes, even at a low concentration.