B22222

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    <td height="59" colspan="2" bgcolor="#03438A" class="subHeader"><p align="center" class="STYLE3" style="margin-bottom: 0">The synthetic convertible  ecosystem</p></td>
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    <td height="311" colspan="2" bgcolor="#03438A" class="subHeader STYLE5"><p class="STYLE25"><span class="STYLE12">Background</span><br />
        <p class="STYLE25">The attempts to uncover the mechanics and complex  interrelations within natural microbial systems and quantitatively measurement  of environmental factors on system behavior often failed because of the  entangled intrinsic parameters and un-measurable population dynamics.</p>
    <p class="STYLE25">We designed and constructed an ecosystem constituted  of two strains of E.coli, which could represent various biological  relationships along with the fluctuation of antibiotics concentration as the  environmental pressure and the inducing molecular such as IPTG and arabinose as  the regulating factors. </p></td>
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    <td height="31" colspan="2" bgcolor="#03438A" class="subHeader"><span class="STYLE7">The Tools</span></td>
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    <td height="390" colspan="2" bgcolor="#03438A" class="subHeader"><table width="968" height="384" border="0" align="center">
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        <td width="318" bordercolor="#03438A" bgcolor="#03438A"><p class="STYLE8"><span class="STYLE10"><strong>Convertible  switch</strong>-----Convertible switch is a switch on the basis  of two mutually-repressive promoters, the product of each represses the express  of that of the other, and both the repressors could be deactivated in certain  conditions. And the state of the cell could be regulated by the change of the  culture variations.</span></p></td>
        <td width="319" bordercolor="#03438A" bgcolor="#03438A"><p class="STYLE11"><span class="STYLE4"><strong>Quorum  sensing</strong>-----That is the way how various bacteria “talk”  to each other. It is the mechanism ensures that certain genes will keep silence  before the cell density of the species pass a threshold. </span><img src="https://static.igem.org/mediawiki/2008/b/b3/F2620Parts.png" width="223" height="48" /></p></td>
        <td width="329" bordercolor="#03438A" bgcolor="#03438A"><p class="STYLE5"><span class="STYLE9"><strong>Prisoners’  Dilemma----</strong>It is the dilemma in which the two  suspects could either choose to cooperate with or betray each other. In  conditions when they could communicate freely with each other, they will cooperate,  which maximizes their benefits as a whole; while when they are inquisited separately,  they will both choose to betray one another to lower the risks of long sentence. </span></p></td>
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        <td height="196" bordercolor="#03438A" bgcolor="#03438A"><img src="https://static.igem.org/mediawiki/2008/2/2d/Qwe.jpg" width="318" height="195" /></td>
        <td bordercolor="#03438A" bgcolor="#03438A"><img src="https://static.igem.org/mediawiki/2008/6/6e/%E6%9C%AA%E5%91%BD%E5%90%8D%C2%B7.jpg" width="319" height="196" /></td>
        <td bordercolor="#03438A" bgcolor="#03438A"><img src="https://static.igem.org/mediawiki/2008/0/0f/Prison.jpg" width="317" height="194" /></td>
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    <td height="15" colspan="2" bgcolor="#03438A" class="subHeader"><div align="right" class="STYLE27">      back to <a href="https://2008.igem.org/Project" class="STYLE29">Project</a> <span class="STYLE28"><span class="STYLE4">or</span></span> <a href="https://2008.igem.org/Team:Tianjin"><strong>Home</strong></a></div></td>
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