Team:UT Dallas/Project2

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<div id='st_1'><h2 class='title'>Project 2: Oscillator</h2>
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<div id='st_1'><center><h2 class='title' style="margin-bottom: 18px;margin-top: 7px;">Dual Population Toggle Switch</h2></center>
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For this subproject, our team created what we call a "biological oscillator". For this oscillator, we used three different strains of bacteria. Each strain produces a different quorum sensing molecule which triggers the next one while repressing the previous one. Each strain has a different fluorescent protein for us to test.
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  <td width='50%' valign='top'>Population 1</td>
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  <li class='st_list' onclick="show_project_info('oscillator_design')">Design</li>
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<td id='st_right' valign='top'><h2 class='title' style='font-size: 120%;'>Overview</h2>Our secondary project involved creating another toggle switch similar in nature to our first mechanism that would serve as a relationship between two different populations of bacteria. Our dual population toggle would be equivalent to our single population toggle in its use, but split up into two populations of cells. That is, the activation of one population would mean the deactivation of the other population. We hoped to achieve this by utilizing basic components as used in our single population toggle strain along with other parts that allowed the two strains to communicate with each other via quorum signalling. When one population was “deactivated” it would secrete quorum signalling molecules that would activate the creation of fluorescence proteins in the other population. The fluorescing population was considered to be in the “activated” state. In this state, inhibitor proteins would be created alongside the fluorescence proteins in order to turn off the production of signalling molecules.Similar to our single strain toggle switch, adding either IPTG or ATc would flip the switch from one state to the other by preventing the targeted inhibitor proteins from binding to their respective promoters. </td>
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Latest revision as of 03:55, 4 October 2012

Dual Population Toggle Switch

  • Two Populations
  • Design
  • Data/Results
  • Biobricks
  • Future Direction

Overview

Our secondary project involved creating another toggle switch similar in nature to our first mechanism that would serve as a relationship between two different populations of bacteria. Our dual population toggle would be equivalent to our single population toggle in its use, but split up into two populations of cells. That is, the activation of one population would mean the deactivation of the other population. We hoped to achieve this by utilizing basic components as used in our single population toggle strain along with other parts that allowed the two strains to communicate with each other via quorum signalling. When one population was “deactivated” it would secrete quorum signalling molecules that would activate the creation of fluorescence proteins in the other population. The fluorescing population was considered to be in the “activated” state. In this state, inhibitor proteins would be created alongside the fluorescence proteins in order to turn off the production of signalling molecules.Similar to our single strain toggle switch, adding either IPTG or ATc would flip the switch from one state to the other by preventing the targeted inhibitor proteins from binding to their respective promoters.
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