Team:INSA-Lyon/Project

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      <th style="width: 70%; background-color: rgb(204, 204, 255);"><big>Highlights<br>
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      <hr style="width: 100%; height: 2px;"><big><br><br>
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      </big><span style="font-weight: normal;">Polyhydroxyalcanoates (PHAs) are universal prokaryotic storage compounds of carbon and
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energy. They are accumulated into the cell as spherical inclusion bodies in case of oversupply
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of carbon sources. We aim to control the production and the composition of granules in E.Coli.
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Many industrial and biomedical applications for those granules had been evocated. We want to
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concentrate especially on two axes :<br />
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⋅ the granule as nano or micro-beads in order to purify a molecule of interest<br />
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⋅ the granule as a storage system for overproduced lipids of interest such as DHA or EPA.
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      </span><big><a
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href="file:///C:/Documents%20and%20Settings/PYZ/Bureau/IGEM%202010/Wiki/Avec%20Kompozer/accueil_Wiki.html#haut"><small><span
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News<br>
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countdown, clustermap, contact mail, etc...</span></td>
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      <td style="background-color: rgb(204, 204, 255);"><big>Abstract<br>
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      <span style="font-weight: normal;">project sum up<br>
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Our Sponsors<br>
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align="undefined" valign="undefined"><big>Modeling<br>
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      <span style="font-weight: normal;">drawings !!!<br>
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== '''Overall project''' ==
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$(this).css({ 'background' : '#f200d0 url(https://static.igem.org/mediawiki/2010/d/d9/Team_INSA-Lyon_bouton_fushia.gif) repeat-x'}); //Add background color and image on hovered list item
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Your abstract
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<div id="corps2">
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<br>
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<h2>The <em>Droppy project</em> !</h2>
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<br>
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<p style="text-indent: 30px; text-align:justify; font-family:Verdana, Times new roman, police3, police4;">Polyhydroxyalcanoates (PHAs) are universal prokaryotic storage compounds of carbon and
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energy. They are accumulated into the cell as spherical inclusion bodies in case of oversupply
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of carbon sources. We aim to control the <a href="https://2010.igem.org/Team:INSA-Lyon/Project/Stage1/Theory">production</a> and the composition of granules in <span style="font-style:italic">Escherichia Coli</span>.
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Many industrial and biomedical applications for those granules had been evocated. However, we want to
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focus especially on two potential applications (see <a href="https://2010.igem.org/Team:INSA-Lyon/Project/Stage2/Theory">Uses</a>):<br />
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<ol id="list_extra">
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<li>the granule as self-cleaving micro-beads in order to purify a recombinant protein of interest, see <a href="https://2010.igem.org/Team:INSA-Lyon/Project/Stage2/Theory#anne3">Proteins purification</a></li>
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<li>the granule as a storage system for overproduced lipids of interest, for example DHA or EPA which have medical applications, see <a href="https://2010.igem.org/Team:INSA-Lyon/Project/Stage2/Theory#anne2"> Storage of lipids of interest</a>.</li>
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<br/></p>
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<p style="text-indent: 30px; text-align:justify;">
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We aim to regulate the granule production in <span style="font-style:italic">E. coli</span> thanks to two different <a href="https://2010.igem.org/Team:INSA-Lyon/Project/Stage3/Strategy">strategies</a>: thermoregulation and chemoregulation (arabinose). However, our favorite new part is a strong promoter sensitive to temperature of the water bath (and also to shaking speed and osmolarity). </p><br><br>
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<div style="text-align:center;">
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<img src="https://static.igem.org/mediawiki/2010/d/d3/Droppy_coli_2.jpg">
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<br><br><p>
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In bacteria, three separate monofunctional enzymes are required for PHA synthesis. In order to improve this pathway, we intend to <a href="https://2010.igem.org/Team:INSA-Lyon/Project/Stage1/Evolution">design a single multifunctional enzyme</a> based on the study of natural evolution of fatty acid synthesis in animals.</p><br>
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<p> Indeed, in plants and bacteria, the reactions involved in fatty acid synthesis also are catalyzed by separate monofunctional enzymes. But in animals, evolution has done synthetic biology and the different enzymes are integrated into a single multifunctional polypeptide in which substrates are handed from one functional domain to the next. We have begun to analyse the work of evolution in animals in order to design multifunctional bacterial enzymes that integrate discrete monofunctional enzymes. We hope that these enzymes could promote the synthesis of particular lipids, such as tri-acyl glycerols, and store these molecules into granules.</p>
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<br>
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<p style="text-align:center;"><a href="#top">Top of Page</a></p>
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== Project Details==
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<a id="csb" href="http://fondation.insa-lyon.fr/"><img style="width: 120px; height: 60px; margin: 10px; padding-top: 15px; padding-bottom: 15px" src="https://static.igem.org/mediawiki/2010/8/81/Team_INSA-Lyon_logo_fondationINSA.jpg"/></a>
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<a id="csb" href="http://www.biomerieux.fr/"><img style="width: 120px; height: 90px; margin: 10px" src="http://www.biomerieux.fr/france/img/logo_home.png"/></a>
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=== Part 2 ===
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<a id="csb" href="http://www.insa-lyon.fr/en"><img style="width: 120px; height: 64.2px; margin: 15px; padding-top: 10px; padding-bottom: 10px" src="https://static.igem.org/mediawiki/2010/4/46/Team_INSA-Lyon_logo_Insa.png" /></a>
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=== The Experiments ===
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=== Part 3 ===
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== Results ==
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Latest revision as of 21:35, 27 October 2010





The Droppy project !


Polyhydroxyalcanoates (PHAs) are universal prokaryotic storage compounds of carbon and energy. They are accumulated into the cell as spherical inclusion bodies in case of oversupply of carbon sources. We aim to control the production and the composition of granules in Escherichia Coli. Many industrial and biomedical applications for those granules had been evocated. However, we want to focus especially on two potential applications (see Uses):

  1. the granule as self-cleaving micro-beads in order to purify a recombinant protein of interest, see Proteins purification
  2. the granule as a storage system for overproduced lipids of interest, for example DHA or EPA which have medical applications, see Storage of lipids of interest.

We aim to regulate the granule production in E. coli thanks to two different strategies: thermoregulation and chemoregulation (arabinose). However, our favorite new part is a strong promoter sensitive to temperature of the water bath (and also to shaking speed and osmolarity).





In bacteria, three separate monofunctional enzymes are required for PHA synthesis. In order to improve this pathway, we intend to design a single multifunctional enzyme based on the study of natural evolution of fatty acid synthesis in animals.


Indeed, in plants and bacteria, the reactions involved in fatty acid synthesis also are catalyzed by separate monofunctional enzymes. But in animals, evolution has done synthetic biology and the different enzymes are integrated into a single multifunctional polypeptide in which substrates are handed from one functional domain to the next. We have begun to analyse the work of evolution in animals in order to design multifunctional bacterial enzymes that integrate discrete monofunctional enzymes. We hope that these enzymes could promote the synthesis of particular lipids, such as tri-acyl glycerols, and store these molecules into granules.


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