Team:UNITS Trieste/Data

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<span>SINBIOME DATA</span>
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<div class="wrapper">
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<div id="container">
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<span class="centered"><b>Click for details on image clickable areas!</b><br/></span>
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<h1>SYNBIOME</h1><span>Click for details on image clickable areas!</span>
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<th><img src="https://static.igem.org/mediawiki/2011/1/1b/Units-ico_strainB.png" alt="strainB" title="strainB"/></th>
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                        <a id="popupContactClose">x</a>
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<tr><td class="tableh">Produced AHL</td> <td class="validated">3OC12 AHL</td> <td class="validated">3OC8 AHL</td> <td>-</td></tr>
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                        <h1>&nbsp;</h1>
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<tr><td class="tableh">Responds to</td> <td>-</td> <td class="validated">3OC12 AHL</td> <td class="validated">3OC8 AHL</td></tr>
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                        <p id="contactArea">
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<tr><td class="tableh">Generated reward</td> <td>-</td> <td class="validated"> &Beta;-glucosidase<br/>(Cellobiose to glucose)</td> <td class="validated">Secreted &Beta;-lactamase</td></tr>
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                            &nbsp;
+
<tr class="tablegray"><td>Direct dependence</td> <td>B&C</td> <td>A&C</td> <td>A&B</td></tr>
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<span class="validated">Validated</span>
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<img src="https://static.igem.org/mediawiki/2011/b/bc/Units-model-R.png" style="display:none"/>
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            <img src="https://static.igem.org/mediawiki/2011/b/bf/Units-model-Rb.png" style="display:none"/>
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<img src="https://static.igem.org/mediawiki/2011/a/a4/Units-model-B.png" style="display:none"/>
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 +
            <div id="text-data">
 +
                 <div id="pTraBox" class="data_box">
                     <h1>pTraBox</h1>
                     <h1>pTraBox</h1>
                     <div>
                     <div>
-
                        <center>
 
-
                            <h3>Generation of pTraBOX-IRES-EGFP</h3>
 
-
                        </center>
 
                         <p class="diapositiva">
                         <p class="diapositiva">
-
                            <img src="https://static.igem.org/mediawiki/igem.org/a/a6/Units-pTraBox_1.PNG" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/><b>Excision of CMV from pIRES2-EGFP and following riligation of the backbone</b>
+
<h3>Excision of CMV from pIRES2-EGFP and following riligation of the backbone</h3>
 +
<center><img src="https://static.igem.org/mediawiki/igem.org/a/a6/Units-pTraBox_1.PNG" border="0" width="400"/><br/></center><br/>
 +
 
                             pIRES2-EGFP supplied by Clontech has been digested in AseI and NheI (Fig.1) in order to remove the constitutive CMV promoter and then the linearized backbone has been purified using the "Wizard Gel Clean Up System" by Promega.
                             pIRES2-EGFP supplied by Clontech has been digested in AseI and NheI (Fig.1) in order to remove the constitutive CMV promoter and then the linearized backbone has been purified using the "Wizard Gel Clean Up System" by Promega.
                             <br/>
                             <br/>
-
                            <img class="inbody" src="https://static.igem.org/mediawiki/igem.org/c/ce/Units-pTraBox_1-1.jpg" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>The extremities of the linearized backbone have been blunted in order to allow its self ligation.
+
<br/><center><img src="https://static.igem.org/mediawiki/igem.org/c/ce/Units-pTraBox_1-1.jpg" border="0" width="400"/><br/><span class="refNews">Figure 1</span></center><br/>
 +
                            The extremities of the linearized backbone have been blunted in order to allow its self ligation.
                             <br/>
                             <br/>
                             XL10-GOLD competent cells have been transformed with the products of ligation and then minipreps have been done.
                             XL10-GOLD competent cells have been transformed with the products of ligation and then minipreps have been done.
                             <br/>
                             <br/>
-
                             The colonies have been checked by enzymatic digestion with NdeI and BamHI, the positives must show only one excised fragment of 600bp (Fig.2).<img class="inbody" src="https://static.igem.org/mediawiki/igem.org/0/04/Units-pTraBox_1-2.jpg" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>
+
                             The colonies have been checked by enzymatic digestion with NdeI and BamHI, the positives must show only one excised fragment of 600bp (Fig.2).<br/>
 +
<br/><center><img src="https://static.igem.org/mediawiki/igem.org/0/04/Units-pTraBox_1-2.jpg" border="0" width="300"/><br/><span class="refNews">Figure 2</span></center><br/>
                         </p>
                         </p>
                         <p class="diapositiva">
                         <p class="diapositiva">
-
                            <b>Excision of TraBox-CMV from pSEAP</b>
+
<h3>Excision of TraBox-CMV from pSEAP</h3>
                             pSEAP has been double digested with EcorI and NotI in Buffer EcoRI plus BSA in 30ul total.
                             pSEAP has been double digested with EcorI and NotI in Buffer EcoRI plus BSA in 30ul total.
                             <br/>
                             <br/>
Line 89: Line 153:
                         </p>
                         </p>
                         <p class="diapositiva">
                         <p class="diapositiva">
-
                            <img src="https://static.igem.org/mediawiki/igem.org/8/89/Units-pTraBox_2.PNG" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/><b>Cloning TraBox-CMVmin in pCDNA3 using NotI- EcoRI sites:</b>
+
<h3>Cloning TraBox-CMVmin in pCDNA3 using NotI- EcoRI sites:</h3>
 +
<center><img src="https://static.igem.org/mediawiki/igem.org/8/89/Units-pTraBox_2.PNG" border="0" width="400"/><br/></center><br/>
 +
                           
                             pCDNA3 has been previously cut in EcorI and NotI in order to obtain the linearized backbone ready for the cloning of TraBox-CMVmin.
                             pCDNA3 has been previously cut in EcorI and NotI in order to obtain the linearized backbone ready for the cloning of TraBox-CMVmin.
                             <br/>
                             <br/>
Line 98: Line 164:
                             All the digested colonies were positive, the fragment excised by the EcorI/XhoI double digeston is the TraBox-CMVmin. (Fig.3)
                             All the digested colonies were positive, the fragment excised by the EcorI/XhoI double digeston is the TraBox-CMVmin. (Fig.3)
                             <br/>
                             <br/>
-
                            <img class="inbody" src="https://static.igem.org/mediawiki/igem.org/a/a9/Units-pTraBox_2_1.jpg" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>One of the positives has been chosen and then amplified by trasformation in XL10-GOLD competent cells. The plasmidic DNA has been purified using a commercial Kit supplied by Promega.
+
<br/><center><img src="https://static.igem.org/mediawiki/igem.org/a/a9/Units-pTraBox_2_1.jpg" border="0" width="500"/><br/><span class="refNews">Figure 3</span></center><br/>
 +
                            One of the positives has been chosen and then amplified by trasformation in XL10-GOLD competent cells. The plasmidic DNA has been purified using a commercial Kit supplied by Promega.
                             <br/>
                             <br/>
                             The Plasmidic DNA has been subsequently digested in EcoRI and XhoI in order to obtain the same insert previously cloned provided by the XhoI sites.
                             The Plasmidic DNA has been subsequently digested in EcoRI and XhoI in order to obtain the same insert previously cloned provided by the XhoI sites.
Line 105: Line 172:
                         </p>
                         </p>
                         <p class="diapositiva">
                         <p class="diapositiva">
-
                            <img src="https://static.igem.org/mediawiki/igem.org/c/c7/Units-pTraBox_3.PNG" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/><b>Cloning TRABOXCMVmin in pIRES2-EGFP/CMV- using EcorI/XhoI sites in order to obtain pTraBOX-IRES-EGFP</b>
+
<h3>Cloning TRABOXCMVmin in pIRES2-EGFP/CMV- using EcorI/XhoI sites in order to obtain pTraBOX-IRES-EGFP</h3>
-
                             TraBox-CMVmin has to be cloned in the pIRES2-EGFP/CMV- previously digested in EcoRI XhoI.(Fig.4)
+
<center><img src="https://static.igem.org/mediawiki/igem.org/c/c7/Units-pTraBox_3.PNG" border="0" width="500"/><br/></center><br/>                      
-
                            <br/>
+
                           
-
                            <img class="inbody" src="https://static.igem.org/mediawiki/igem.org/a/a9/Units-pTraBox_3-1.jpg" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>The linearized backbone has been purified using the "Wizard Gel Clean Up System" by Promega and then ligated with the TraBox-CMVmin as insert.
+
                             TraBox-CMVmin has to be cloned in the pIRES2-EGFP/CMV- previously digested in EcoRI XhoI.(Fig.4)<br/>
 +
<br/><center><img src="https://static.igem.org/mediawiki/igem.org/a/a9/Units-pTraBox_3-1.jpg" border="0" width="400"/><br/><span class="refNews">Figure 4</span></center><br/>
 +
                            The linearized backbone has been purified using the "Wizard Gel Clean Up System" by Promega and then ligated with the TraBox-CMVmin as insert.
                             <br/>
                             <br/>
                             Different Condition of ligation has been performed looking for the best efficiency.
                             Different Condition of ligation has been performed looking for the best efficiency.
Line 116: Line 185:
                             The plasmidic DNA so obtained has been screened by enzymatic digestion using EcoRI and XhoI. The positives have to show the TraboxCMVmin excised in agarose gel electrophoresis separation (Fig5).
                             The plasmidic DNA so obtained has been screened by enzymatic digestion using EcoRI and XhoI. The positives have to show the TraboxCMVmin excised in agarose gel electrophoresis separation (Fig5).
                             <br/>
                             <br/>
-
                             Colony N°2 and 4 has been chosen as positive and amplified in order to obtain more plasmidic DNA.<img class="inbody" src="https://static.igem.org/mediawiki/igem.org/1/1e/Units-pTraBox_3-2.jpg" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>
+
                             Colony N°2 and 4 has been chosen as positive and amplified in order to obtain more plasmidic DNA.<br/>
 +
<br/><center><img src="https://static.igem.org/mediawiki/igem.org/1/1e/Units-pTraBox_3-2.jpg" border="0" width="300"/><br/><span class="refNews">Figure 5</span></center><br/>
                         </p>
                         </p>
                         <p class="diapositiva">
                         <p class="diapositiva">
-
                            <img src="https://static.igem.org/mediawiki/igem.org/8/81/Units-pTraBox_4.PNG" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/><b>Cloning sBLA in pTraBox-IRES-EGFP</b>
+
<h3>Cloning sBLA in pTraBox-IRES-EGFP</h3>
 +
<center><img src="https://static.igem.org/mediawiki/igem.org/8/81/Units-pTraBox_4.PNG" border="0" width="500"/><br/></center><br/>
 +
                           
                             sBLA has to be cloned in the pTRABOX-IRES-EGFP previously digested in EcoRI - BamHI.
                             sBLA has to be cloned in the pTRABOX-IRES-EGFP previously digested in EcoRI - BamHI.
                             <br/>
                             <br/>
Line 132: Line 204:
                             The positives have to show the sBLA excised in agarose gel electrophoresis separation(Fig.6).
                             The positives have to show the sBLA excised in agarose gel electrophoresis separation(Fig.6).
                             <br/>
                             <br/>
-
                            <img class="inbody" src="https://static.igem.org/mediawiki/igem.org/c/c8/Units-pTraBox_4-1.jpg" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>Colony N°4 and N°5 have been chosen as positive and amplified in order to obtain more plasmidic DNA.  
+
<br/><center><img src="https://static.igem.org/mediawiki/igem.org/c/c8/Units-pTraBox_4-1.jpg" border="0" width="400"/><br/><span class="refNews">Figure 6</span></center><br/>
 +
                            Colony N°4 and N°5 have been chosen as positive and amplified in order to obtain more plasmidic DNA.  
                         </p>
                         </p>
                         <p class="diapositiva">
                         <p class="diapositiva">
-
                            <b>Checking the final constructs pTRABOX-sBLA-IRES-EGFP</b>
+
<h3>Checking the final constructs pTRABOX-sBLA-IRES-EGFP</h3>
                             In order to check the final constructs both the plamidic DNA obtained by the clone N°4 and 5 has been digested with:<em> - &nbsp;&nbsp;<b>EcoRI-BamHI</b>: sBLA has to be excised
                             In order to check the final constructs both the plamidic DNA obtained by the clone N°4 and 5 has been digested with:<em> - &nbsp;&nbsp;<b>EcoRI-BamHI</b>: sBLA has to be excised
                                 <br/>
                                 <br/>
Line 143: Line 216:
                                 <br/>
                                 <br/>
                             </em>
                             </em>
-
                             All the digestions have been checked in Gel electrophoresis separation on Agarose 1% W/V (Fig.7)<img class="inbody" src="https://static.igem.org/mediawiki/igem.org/a/a6/Units-pTraBox_4-2.jpg" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>
+
                             All the digestions have been checked in Gel electrophoresis separation on Agarose 1% W/V (Fig.7)<br/>
 +
<br/><center><img src="https://static.igem.org/mediawiki/igem.org/a/a6/Units-pTraBox_4-2.jpg" border="0" width="400"/><br/><span class="refNews">Figure 7</span></center><br/>
                         </p>
                         </p>
                     </div>
                     </div>
                 </div>
                 </div>
-
                 <div id="P65-TraR" class="descr-team">
+
                 <div id="P65-TraR" class="data_box">
                     <h1>P65-TraR</h1>
                     <h1>P65-TraR</h1>
                     <div>
                     <div>
Line 154: Line 228:
                         </center>
                         </center>
                         <p>
                         <p>
-
                            We decided to test both pTraBox-SEAP and p65-TraR (Neddermann P. et al., 2003), kindly provided by Dr. R. Cortese's group, using SEAP (Secreted alkaline phosphatase) as reporter gene, detected with the Great Escape  Chemiluminescent assay kit (Clontech).
+
We decided to use p65-TraR (Neddermann P. et al., 2003), kindly provided by Dr. R. Cortese's group, as a eukaryotic genetic switch sensible to AHL-OXOC8. This chimerical protein is composed by a portion of the human p65, a NLS signal and the whole TraR. (Fig.1)
-
                            <br/>
+
-
                            In our final system we aim to have the presence of both the OXOC8 and the OXOC12 but the eukaryotic cell has to be sensible only to OXOC8.
+
                         </p>
                         </p>
-
                        <img src="https://static.igem.org/mediawiki/2011/1/18/Units-pSEAP.png" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/>
+
<center><img src="https://static.igem.org/mediawiki/2011/4/41/Units-p65_TraR-fig1.png" border="0" width="400"/><br/><span class="refNews">Figure 1</span></center>
                         <p>
                         <p>
-
                            On this basis the assay was performed in order to test the efficiency of this inducible promoter  after the induction with OXOC8 and the response to OXOC12 as unspecific ligand.
+
The gene received by Dr. R. Cortese's group doesn't fit the RCF10 standard because it presents several EcoRI, PstI and XbaI restriction sites (RS) inside the coding sequences. Based on this evidence we decided to design a new p65-TraR that would fit the RCF10 standards in terms of RS inside the coding sequence and the presence of Prefix and Suffix. In this way the BBa_K553023 has been generated. DNA2.0 performed the P65-TraR gene synthesis and optimization for the expression in mammals systems.
-
                            <br/>
+
-
                            AHL has to be dissolved in a organic solvent as Ethyl-Acetate in order to prevent the lactonolysis that will occur in prolonged exposure to aqueous conditions.
+
-
                            <br/>
+
-
                            2x10<span class="power">5</span>
+
-
                            cells for Hela were placed in 35mm culture dishes and transfected using the Fugene HD transfection reagent (Promega). For each transfection  2ug of DNA were transfected.
+
-
                            <br/>
+
-
                            For all the experimental conditions that we tested, were performed biological triplicates and experimental triplicates.
+
                         </p>
                         </p>
-
                        <p class="diapositiva">
+
<center><img src="https://static.igem.org/mediawiki/2011/b/b0/Units-p65_TraR-fig2.png" border="0" width="400"/><br/><span class="refNews">Figure 2</span></center>
-
                            <img src="https://static.igem.org/mediawiki/2011/c/c8/Units-SEAP12.PNG" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/><b>Figure 1. SEAP activity12 hours after transfection.</b>
+
                         <p>
-
                            2x10<span class="power">5</span>
+
The P65-TraR in our system represents the most important element because it makes possible the communication between the two kingdoms. Using the TraR protein it can recognize both AHL-OXOC8 and the TraBox region and thanks to the NLS signal and the p65 it can migrate in the nucleus, where it acts as an eukaryotic trans-activator. (Fig.3)
-
                            cells for Hela were placed in 35mm culture dishes and transfected using the Fugene HD transfection reagent (Promega). For each transfection 1ug of transactivator plasmid (P65-TraR) and 1ug of pTraR-SEAP reporter were transfected. We decided also to test the basal activity of SEAP under the control of TraBox-CMVmin, in order to achieve this goal hela cells were transfected with 1ug of pTraR-SEAP and 1ug of pCDNA3.
+
-
                            <br/>
+
-
                            After 6 hours 20uM of AHLs (OXOC8 and OXOC12 separately) were added to cell culture medium and 12  hours after the addition of ligands the medium was collected and the activity of SEAP was measured.
+
-
                            <br/>
+
-
                            Hela WT were treated with a corresponding amount of Ethyl Acetate + OXOC8.
+
-
                         </p>
+
-
                        <p class="diapositiva">
+
-
                            <img src="https://static.igem.org/mediawiki/2011/0/05/Units-SEAP24.PNG" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/><b>Figure 2. SEAP activity 24 hours after transfection.</b>
+
-
                            2x10<span class="power">5</span>
+
-
                            cells for Hela were placed in 35mm culture dishes and transfected using the Fugene HD transfection reagent (Promega). For each transfection 1ug of transactivator plasmid (P65-TraR) and 1ug of pTraR-SEAP reporter were transfected. We decided also to test the basal activity of SEAP under the control of TraBox-CMVmin, in order to achieve this goal hela cells were transfected with 1ug of pTraR-SEAP and 1ug of pCDNA3.
+
-
                            <br/>
+
-
                            After 6 hours 20uM of AHLs (OXOC8 and OXOC12 separately) were added to cell culture medium and 24  hours after the addition of ligands the medium was collected and the activity of SEAP was measured.
+
-
                            <br/>
+
-
                            Hela WT were treated with a corresponding amount of Ethyl Acetate + OXOC8.
+
-
                        </p>
+
-
                        <p class="diapositiva">
+
-
                            <img src="https://static.igem.org/mediawiki/2011/5/58/Units-luciferase.PNG" border="0" width="300" onClick="if($(this).width()==300) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'300px'}); }"/><b>Figure 3. Luciferase activity12 hours after transfection.</b>
+
-
                            2x10<span class="power">5</span>
+
-
                            cells for Hela were placed in 35mm culture dishes and transfected using the Fugene HD transfection reagent (Promega). For each transfection 1ug of  Luciferase reporter plasmid and 1ug of pCDNA3 reporter were transfected as positive control of trasnfection. Cells were treated with 20 uM OXOC8 6 hours after trasnfection.
+
                         </p>
                         </p>
 +
<center><img src="https://static.igem.org/mediawiki/2011/1/18/Units-pSEAP.png" border="0" width="400"/><br/><span class="refNews">Figure 3</span></center>
                     </div>
                     </div>
                 </div>
                 </div>
-
                 <div id="LASnlator" class="descr-team">
+
                 <div id="LASnlator" class="data_box">
                     <h1>LASnlator</h1>
                     <h1>LASnlator</h1>
                     <div>
                     <div>
-
                         <p>
+
                    <img style="float:left;" src="https://static.igem.org/mediawiki/2011/5/51/Units-dia12-0.JPG" border="0" width="340"/>
 +
                         <p style="width:320px; float:right;">
                             This part, made of two composite Biobrick, provides the continuous presence of LasR.  
                             This part, made of two composite Biobrick, provides the continuous presence of LasR.  
                             <br/>
                             <br/>
-
                             This trans-activator is ready to bind OC8 HLA and then it positively regulates the transcription of both the cellobiosidase and LasI, the OC8 HLA synthase present on the same plasmid.
+
                             This trans-activator is ready to bind OC8 AHL and then it positively regulates the transcription of both the cellobiosidase and LasI, the OC8 AHL synthase present on the same plasmid.
-
                            <br/><br/><br/><br/><br/><br/><br/><br/>
+
                         </p>
                         </p>
-
                         <img src="https://static.igem.org/mediawiki/2011/5/51/Units-dia12-0.JPG" border="0" width="200" onClick="if($(this).width()==200) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'200px'}); }"/>
+
                         <span class="clear"></span>
-
                        <br/>
+
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/6/6e/Units-dia12_1.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span class="centered"><b>Generation of: Constitutive Promoter - RBS - LasR - Terminator</b></span>
+
                             <img src="https://static.igem.org/mediawiki/2011/6/6e/Units-dia12_1.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/>
 +
<span class="centered"><b>Generation of: Constitutive Promoter - RBS - LasR - Terminator</b></span>
                             <span>To build this plasmid we used the following parts:
                             <span>To build this plasmid we used the following parts:
                                 <br/>
                                 <br/>
Line 218: Line 265:
                                 <br/>
                                 <br/>
                             </span>
                             </span>
-
                             <span>These BioBricks transformed into DH5a, as suggested by the iGEM protocol. BBa_C0179 was digested with EcoRI/SpeI in order to isolate the LasR. BBa_B0015 was linearized with an EcoRI/XbaI-digestion and LasR was ligated ahead of the terminator. The ligated product was than transformed into DH5a and seeded in the presence of the appropriate antibiotic. The growing colonies were tested with a colony PCR (Vf-Vr2 primers), following this protocol:</span>
+
                             <span>These BioBricks transformed into DH5&alpha;, as suggested by the iGEM protocol. BBa_C0179 was digested with EcoRI/SpeI in order to isolate the LasR. BBa_B0015 was linearized with an EcoRI/XbaI-digestion and LasR was ligated ahead of the terminator. The ligated product was than transformed into DH5&alpha; and seeded in the presence of the appropriate antibiotic. The growing colonies were tested with a colony PCR (Vf-Vr2 primers), following this protocol:</span>
                             <span class="centered">93°  5' | 30x (95° 30" | 50° 30" |72° 60'') | 72° 7'| 4° &#8734;</span>
                             <span class="centered">93°  5' | 30x (95° 30" | 50° 30" |72° 60'') | 72° 7'| 4° &#8734;</span>
                             <span>The positives, highlighted through electrophoresis, have been expanded and the plasmid extracted.
                             <span>The positives, highlighted through electrophoresis, have been expanded and the plasmid extracted.
Line 225: Line 272:
                             </span>
                             </span>
                             <span>The final BioBrick was tested with an EcoRI/PstI cut, giving our insert long 921 bp, whilst the plasmid is 2000 bp (see figure below).</span>
                             <span>The final BioBrick was tested with an EcoRI/PstI cut, giving our insert long 921 bp, whilst the plasmid is 2000 bp (see figure below).</span>
-
                             <span><img src="https://static.igem.org/mediawiki/2011/c/c1/Units-dia12-1_1.jpg" border="0" width="400" onClick="if($(this).width()==400) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'400px'}); }" style="margin:0 auto;"/></span><span>To make LAS- "n"lator suitable for our system, this plasmid was ligated to the PromLasR - TraI BioBrick and inserted into the kanamycin resistant vector pBBR1MCS-3.</span>
+
                             <span class="centered"><img src="https://static.igem.org/mediawiki/2011/c/c1/Units-dia12-1_1.jpg" border="0" width="400"/></span>
 +
<span>To make LAS- "n"lator suitable for our system, this plasmid was ligated to the PromLasR - TraI BioBrick and inserted into the kanamycin resistant vector pBBR1MCS-3.</span>
                         </p>
                         </p>
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/0/08/Units-bkgY.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/0/08/Units-bkgY.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/2/27/Units-dia12_2.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span class="centered"><b>Generation of: PromLasR - RBS - TraI - Terminator</b></span>
+
                             <img src="https://static.igem.org/mediawiki/2011/2/27/Units-dia12_2.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/>
 +
<span class="centered"><b>Generation of: PromLasI - RBS - TraI - Terminator</b></span>
                             <span>To build this plasmid we used the following parts:
                             <span>To build this plasmid we used the following parts:
                                 <br/>
                                 <br/>
Line 235: Line 284:
                                 &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;RBS <b>BBa_B0034</b> - 12 bp
                                 &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;RBS <b>BBa_B0034</b> - 12 bp
                                 <br/>
                                 <br/>
-
                                 &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;TraI from <b>A. Tumefaciens</b> (New!) -  639 bp
+
                                 &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;TraI from <b><i>A. tumefaciens</i></b> (New!) -  639 bp
                                 <br/>
                                 <br/>
                                 &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;Terminator <b>BBa_B0015</b> - 129 bp
                                 &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;Terminator <b>BBa_B0015</b> - 129 bp
                             </span>
                             </span>
-
                             <span>The BioBricks BBa_R0079, B0034 and B0015 were resuspended and transformed into DH5a cells. The PromLasR was digested with EcoRI/SpeI and checked on gel electrophoresis. The purified fragments were ligated upstream of the EcoRI/XbaI-digested RBS and then transformed into DH5a. Then a colony PCR was run to check the transformed colonies (primers: Vf2 & Vr). The protocol used was the following:</span>
+
                             <span>The BioBricks BBa_R0079, B0034 and B0015 were resuspended and transformed into DH5&alpha; cells. The PromLasR was digested with EcoRI/SpeI and checked on gel electrophoresis. The purified fragments were ligated upstream of the EcoRI/XbaI-digested RBS and then transformed into DH5&alpha;. Then a colony PCR was run to check the transformed colonies (primers: Vf2 & Vr). The protocol used was the following:</span>
                             <span class="centered">93° 5' | 25x(93° 30" | 50° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
                             <span class="centered">93° 5' | 25x(93° 30" | 50° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
                             <span>The positive colonies were expanded, their plasmids extracted and then linearized with a SpeI/PstI digestion.
                             <span>The positive colonies were expanded, their plasmids extracted and then linearized with a SpeI/PstI digestion.
                                 <br/>
                                 <br/>
-
                                 Meanwhile, a PCR amplification of TraI was made from the gDNA of A. Tumefaciens with TaqPol, following this PCR protocol (oligos on parts page):
+
                                 Meanwhile, a PCR amplification of TraI was made from the gDNA of <i>A. tumefaciens</i> with TaqPol, following this PCR protocol (oligos on parts page):
                             </span>
                             </span>
                             <span class="centered">95° 5' | 10x(93° 30" | 56° 30" | 72° 40") | 23x (93° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
                             <span class="centered">95° 5' | 10x(93° 30" | 56° 30" | 72° 40") | 23x (93° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
                             <span>The TraI amplification, to which the EcoRI and PstI restriction sites were added through the PCR primers, was verified on gel electrophoresis, extracted and then digested with EcoRI/PstI.  
                             <span>The TraI amplification, to which the EcoRI and PstI restriction sites were added through the PCR primers, was verified on gel electrophoresis, extracted and then digested with EcoRI/PstI.  
                                 <br/>
                                 <br/>
-
                                 The digested fragment was ligated into pBSIIK and transformed into DH5a. Positive white colonies growing on Xgal-LB agar plates were checked for the presence of TraI with the following colony PCR protocol (PTraI oligo on parts page):
+
                                 The digested fragment was ligated into pBSIIK and transformed into DH5&alpha;. Positive white colonies growing on Xgal-LB agar plates were checked for the presence of TraI with the following colony PCR protocol (PTraI oligo on parts page):
                             </span>
                             </span>
                             <span class="centered">93° 5' | 25x(95° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
                             <span class="centered">93° 5' | 25x(95° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
-
                             <span>The PCR amplification was checked on gel electrophoresis, and the positive colonies selected for sequencing. When the sequencing was completed, analysed and selected the mutation-free samples.
+
                             <span>The PCR amplification was checked on gel electrophoresis, and the positive colonies selected for sequencing. When the sequencing was completed, we analyzed and selected the mutation-free samples.
                                 <br/>
                                 <br/>
                                 TraI was digested with EcoRI/SpeI in order to ligate it in ahead of the terminator, previously digested with EcoRI/XbaI. The ligated product was transformed into cells and the resulting colonies were checked with a colony PCR (prmers: vf2 and vr):
                                 TraI was digested with EcoRI/SpeI in order to ligate it in ahead of the terminator, previously digested with EcoRI/XbaI. The ligated product was transformed into cells and the resulting colonies were checked with a colony PCR (prmers: vf2 and vr):
Line 258: Line 307:
                             <span>The positive colonies were expanded and their plasmids extracted.  
                             <span>The positive colonies were expanded and their plasmids extracted.  
                                 <br/>
                                 <br/>
-
                                 The TraI-Terminator fragment was isolated with a XbaI/PstI digestion, and then ligated into the previously linearized plasmid containing the PromLasR-RBS. We thus transformed DH5a and subsequently performed a colony PCR with the same protocol used before, in order to expand the positive colonies and extract the plasmids.
+
                                 The TraI-Terminator fragment was isolated with a XbaI/PstI digestion, and then ligated into the previously linearized plasmid containing the PromLasI-RBS. We thus transformed DH5&alpha; and subsequently performed a colony PCR with the same protocol used before, in order to expand the positive colonies and extract the plasmids.
                             </span>
                             </span>
                             <span>The completed BioBrick was checked through an EcoRI/PstI digestion and sequencing. The digested fragment of B3 was of the appropriate length (937 bp), as confirmed with gel electrophoresis (see figure below).</span>
                             <span>The completed BioBrick was checked through an EcoRI/PstI digestion and sequencing. The digested fragment of B3 was of the appropriate length (937 bp), as confirmed with gel electrophoresis (see figure below).</span>
-
                             <span><img src="https://static.igem.org/mediawiki/2011/5/5b/Units-dia12-2_1.jpg" border="0" width="400" onClick="if($(this).width()==400) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'400px'}); }" style="margin:0 auto;"/></span>
+
                             <span class="centered"><img src="https://static.igem.org/mediawiki/2011/5/5b/Units-dia12-2_1.jpg" border="0" width="400"/></span>
                         </p>
                         </p>
                     </div>
                     </div>
                 </div>
                 </div>
-
                <div id="TRAnslator" class="descr-team">
+
                 <div id="pLasI-glucosidase" class="data_box">
-
                    <h1>TRAnslator</h1>
+
-
                    <div>
+
-
                        <p>
+
-
                            <br/>
+
-
                            This part, made of two composite Biobrick, provides the continuous presence of TraR.
+
-
                            <br/>
+
-
                            This trans-activator is ready to bind OC8 HLA and then it positively regulates the transcription of both the cellobiosidase and LasI, the OC12 HLA synthase present on the same plasmid.
+
-
                            <br/>
+
-
                            <br/>
+
-
                            <br/>
+
-
                            <br/>
+
-
                            <br/>
+
-
                            <br/>
+
-
                        </p>
+
-
                        <img src="https://static.igem.org/mediawiki/2011/4/43/Units-dia9-0.JPG" border="0" width="200" onClick="if($(this).width()==200) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'200px'}); }"/>
+
-
                        <br/>
+
-
                        <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
+
-
                            <img src="https://static.igem.org/mediawiki/2011/7/73/Units-dia9_1.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span class="centered"><b>Generation of: Constitutive promoter - RBS - TraR - Terminator</b></span>
+
-
                            <span>To build this plasmid we used the following parts:
+
-
                                <br/>
+
-
                                &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;Promoter Tra R regulated from <b>A. Tumefaciens</b> (New! <b>BBa_K553002</b>) - 151 bp
+
-
                                <br/>
+
-
                                &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;RBS + LasI + Term composite <b>BBa_K081016</b> - 735 bp
+
-
                                <br/>
+
-
                            </span>
+
-
                            <span>The BioBrick BBa_K081016 was resuspended with the standard protocol and transformed into DH5a competent cells. The plasmid was then extracted using a plasmid minipreparation commercial kit (EuroClone) and digested with EcoRI/XbaI.
+
-
                                <br/>
+
-
                                PCR amplification of PromTraR from the gDNA of A. Tumefaciens was made with TaqPol, following this PCR protocol (primers: TraRFw and TraRRev):
+
-
                            </span>
+
-
                            <span class="centered">95° 5' | 10x(93° 30" | 56° 30" | 72° 40") | 23x (93° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
+
-
                            <span>PromTraI amplification was verified on gel electrophoresis and extracted. It was then digested with EcoRI/PstI, ligated in pBSIIK and transformed into DH5a. The positive white colonies growing on Xgal-LB agar plates were checked using the following colony PCR protocol (primers: TraRFw and TraRRev):</span>
+
-
                            <span class="centered">95° 5' | 25x(93° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
+
-
                            <span>The PCR amplification was checked on gel electrophoresis and the positive colonies selected for sequencing. The PromTraR thus obtained was digested with EcoRI/SpeI and ligated in the BBa_K081016 vector. DH5a were subsequently transformed and the colonies checked with a colony PCR, using the following protocol (primers: vf2 and vr):</span>
+
-
                            <span class="centered">93°  5' | 30x (95° 30" | 50° 30" |72° 60'') | 72° 7'| 4° &#8734;</span>
+
-
                            <span>The amplification was on gel electrophoresis and the positives selected.
+
-
                                <br/>
+
-
                                The new construct was then verified with a EcoRI/PstI digestion and sequencing. As shown in the picture below, the length of the digested part was of the appropriate size (886 bp).
+
-
                            </span>
+
-
                            <span><img src="https://static.igem.org/mediawiki/2011/a/af/Units-dia9-2_1.jpg" border="0" width="400" onClick="if($(this).width()==400) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'400px'}); }" style="margin:0 auto;"/></span><span>To complete the final construct of the "TRA-nslator", we ligated the plasmids of A1 and A2 together. This construct was finally into pBBR1MCS-3. </span>
+
-
                        </p>
+
-
                        <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/0/08/Units-bkgY.png)">
+
-
                            <img src="https://static.igem.org/mediawiki/2011/a/a7/Units-dia9_2.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span class="centered"><b>Generation of: PromTraR - RBS - LasI - terminator</b></span>
+
-
                            <span>To build this plasmid we used the following parts:
+
-
                                <br/>
+
-
                                &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;Constitutive promoter <b>BBa_J23100</b> - 35 bp
+
-
                                <br/>
+
-
                                &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;RBS <b>BBa_B0034</b> - 12 bp
+
-
                                <br/>
+
-
                                &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;TraR from <b>A. Tumefaciens</b> (New!) - 705 bp
+
-
                                <br/>
+
-
                                &nbsp;&nbsp;&nbsp;&nbsp;-&nbsp;&nbsp;Terminator <b>BBa_B0015</b> - 129 bp
+
-
                                <br/>
+
-
                            </span>
+
-
                            <span>The BioBricks BBa_J23100, B0034 and B0015 have been resuspended and amplified through transformation into DH5a cells.
+
-
                                <br/>
+
-
                                Meanwhile, a PCR amplification of TraR was made from the gDNA of A. Tumefaciens with TaqPol, following this protocol:
+
-
                            </span>
+
-
                            <span class="centered">95° 5' | 10x(93° 30" | 56° 30" | 72° 40") | 23x (93° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
+
-
                            <span>The amplification was verified on agarose gel and purified. The primers used for the PCR inserted an EcoRI and a PstI site at the ends of the TraR sequence, in order to cut it with the respective enzymes and then clone it into pBSIIK. DH5a were transformed and positive white colonies growing on Xgal-LB agar plates were checked with the following colony PCR protocol:</span>
+
-
                            <span class="centered">93° 5' | 25x(95° 30" | 65° 30" | 72° 40") | 72° 7' | 4° &#8734;</span>
+
-
                            <span>
+
-
                            The PCR amplification was checked on gel electrophoresis, and the positive colonies were selected for sequencing. When the sequencing was completed, we analysed and a selected the mutation-free samples.
+
-
                            </br>
+
-
                            The TraR obtained was digested with EcoRI/SpeI and cloned into the EcoRI/XbaI-digested BBa_B0015 vector. The ligation product was transformed into DH5a and the colonies were checked with the following colony PCR protocol (primers: vf2 and Vr):</span>
+
-
                        <span class="centered">93°  5' | 30x (95° 30" | 50° 30" |72° 60") | 72° 7'| 4° &#8734;</span>
+
-
                        <span>Some of the positive colonies, giving an amplification product of about 1149 bp, were expanded in order to amplify the DNA.
+
-
                            <br/>
+
-
                            The plasmids were then digested with XbaI/PstI and cloned into the SpeI/PstI-linearized BBa_B0034 vector. As before, we transformed DH5a and we controlled the positives with a colony PCR, using the following protocol (primers: vf2 and Vr):
+
-
                        </span>
+
-
                        <span class="centered">93°  5' | 30x (95° 30" | 50° 30" |72° 75") | 72° 7'| 4° &#8734;</span>
+
-
                        <span>Positive colonies have been expanded and their plasmids digested with XbaI/PstI, in order to ligate the RBS-TraR-Terminator to a constitutive promoter digested with SpeI/Pst. At first, we used the BioBrick BBa_J23119 but this part didn't work as expected, so changed the promoter. The ligation was eventually made into the Biobrick Bba_J23100, and each product has been transformed into DH5a and checked with colony PCR. Positive colonies have been expanded as usual.</span>
+
-
                        <span>The new construct was then verified through EcoRI/PstI digestion (its length was 903 bp as shown in the picture) as well as sequencing.</span>
+
-
                        <span><img src="https://static.igem.org/mediawiki/2011/thumb/d/d8/Units-dia9-1_1.jpg/1024px-Units-dia9-1_1.jpg" border="0" width="400" onClick="if($(this).width()==400) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'400px'}); }" style="margin:0 auto;"/></span><span>To complete the final construct of the "TRA-nslator", we ligated the A2 construct downstream of A1, into the tetracycline-resistant plasmid pBBR1MCS-3.</span>
+
-
                        </p>
+
-
                    </div>
+
-
                </div>
+
-
                 <div id="pLasI-glucosidase" class="descr-team">
+
                     <h1>pLasI-glucosidase</h1>
                     <h1>pLasI-glucosidase</h1>
                     <div>
                     <div>
-
                        <p>
+
                    <img style="float:left;" src="https://static.igem.org/mediawiki/2011/9/97/Units-dia6-0.JPG" border="0" width="340"/>
-
                            <br/>
+
                        <p style="width:320px; float:right;">
-
                             This plasmid hosts an OC12 HLA inducible promoter: LasI (BBa_R0079). Once OC8 HLA binds the LasR trans-activator (BBa_C0179) the cellobiosidase transcription is activated thus the bacteria itself can transform the cellobiose in glucose and use it as a source of energy.
+
                             This plasmid hosts an OC12 AHL inducible promoter: LasI (BBa_R0079). Once OC8 AHL binds the LasR trans-activator (BBa_C0179) the cellobiosidase transcription is activated thus the bacteria itself can transform the cellobiose in glucose and use it as a source of energy.
-
                            <br/>
+
-
                            The plasmid provides also to generate constitutively the GFP and host a kanamycin resistance.
+
-
                            <br/>
+
                             <br/>
                             <br/>
 +
                            The plasmid provides also to constitutively generate the GFP and host a kanamycin resistance.
                         </p>
                         </p>
-
                         <img src="https://static.igem.org/mediawiki/2011/9/97/Units-dia6-0.JPG" border="0" width="200" onClick="if($(this).width()==200) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'200px'}); }"/>
+
                         <span class="clear"></span>
                         <center>
                         <center>
                             <h3>Generation of: PromLasI - RBS - Glucosidase - terminator</h3>
                             <h3>Generation of: PromLasI - RBS - Glucosidase - terminator</h3>
Line 372: Line 342:
                         </p>
                         </p>
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/b/be/Units-dia6-1.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>For the construction of the first part, in particular the ligation of RBS-Glucosidase inside the terminator vector, see the generation of PromTraI-Glucosidase. As seen with the construct PromTraI-Glucosidase, the first ligation made with the promoter was not successful: the DNA sequencing confirmed that. The construct was the built again from the beginning.</span>
+
                             <img src="https://static.igem.org/mediawiki/2011/b/be/Units-dia6-1.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/>
 +
<span>The double terminator BioBrick (BBa_B0015) has been resuspended and then amplified through transformation into DH5α competent cells. The plasmid was then extracted and digested (EcoRI/XbaI).</span>
 +
<span>The RFC10 compatible RBS-Glucosidase plasmid (BBa_J15001 + BBa_K392008), a gift from Dr. C. French (University of Edinburgh), was transformed into DH5&alpha;, extracted and digested (EcoRI/SpeI). The glucosidase was then ligated inside the BBa_B0015 vector and transformed into DH5&alpha;. The transformed colonies were screened with colony PCR (primers: Vf and Vr2), using the following protocol:</span>
 +
<span class="centered">93° 5' | 30x(95° 30" | 50° 30" | 72° 60") | 72° 7' | 4° &#8734;</span>
 +
<span>As seen with other constructs, the first ligation made with the constitutive promoter was not successful: the DNA sequencing confirmed that. The construct was then built again from the beginning.</span>
                         </p>
                         </p>
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/0/08/Units-bkgY.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/0/08/Units-bkgY.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/5/52/Units-dia6-2.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>Unlike PromTraI-Glucosidase, the EcoRI/XbaI-digested RBS-glucosidase-terminator vector was ligated with PromLasI, previously cut with EcoRI/SpeI. Different ligation strategies were attempted and later DH5a were transformed. We then performed a colony PCR with the following protocol (PromTrFw and PromTraRev): </span>
+
                             <img src="https://static.igem.org/mediawiki/2011/5/52/Units-dia6-2.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/>
 +
<span>Unlike PromTraI-Glucosidase, the EcoRI/XbaI-digested RBS-glucosidase-terminator vector was ligated with PromLasI, previously cut with EcoRI/SpeI. Different ligation strategies were attempted and later DH5&alpha; were transformed. We then performed a colony PCR with the following protocol (PromTrFw and PromTraRev): </span>
                             <span class="centered">93° 5' | 30x(95° 30" | 50° 30" | 72° 70") | 72° 7' | 4° &#8734;</span>
                             <span class="centered">93° 5' | 30x(95° 30" | 50° 30" | 72° 70") | 72° 7' | 4° &#8734;</span>
                             <span>Positive colonies were expanded and their plasmids extracted.
                             <span>Positive colonies were expanded and their plasmids extracted.
                                 We then proceeded with the quality control: the plasmid was control-digested with EcoRI/PstI and checked on gel electrophoresis, showing the expected pattern with the construct at about 1850 bp and the plasmid backbone at less than 3000 bp.</span>
                                 We then proceeded with the quality control: the plasmid was control-digested with EcoRI/PstI and checked on gel electrophoresis, showing the expected pattern with the construct at about 1850 bp and the plasmid backbone at less than 3000 bp.</span>
-
                             <span><img src="https://static.igem.org/mediawiki/2011/thumb/8/8c/Units-dia6-2_1.jpg/1024px-Units-dia6-2_1.jpg" border="0" width="400" onClick="if($(this).width()==400) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'400px'}); }" style="margin:0 auto;"/></span><span>This plasmid was sent to sequence and the results were analyzed and compared with the irregular construct we'd previously made. The composite construct is correct but we observed some mutations in the glucosidase sequence. </span>
+
                             <span class="centered"><img src="https://static.igem.org/mediawiki/2011/thumb/8/8c/Units-dia6-2_1.jpg/1024px-Units-dia6-2_1.jpg" border="0" width="400"/></span>
 +
<span>This plasmid was sent to sequence and the results were analyzed and compared with the irregular construct we'd previously made. The composite construct is correct but we observed some mutations in the glucosidase sequence. </span>
                         </p>
                         </p>
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/9/97/Units-bkgB.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/9/97/Units-bkgB.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/a/a3/Units-dia6-3.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>To complete our construct, the BBa_I13522 PTet GFP was resuspended, transformed, extracted and digested with XbaI/PstI. This fragment was then ligated into our SpeI/PstI-digested construct. The ligation product was transformed into DH5a, giving some positive green colonies expressing GFP.</span>
+
                             <img src="https://static.igem.org/mediawiki/2011/a/a3/Units-dia6-3.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>To complete our construct, the BBa_I13522 PTet GFP was resuspended, transformed, extracted and digested with XbaI/PstI. This fragment was then ligated into our SpeI/PstI-digested construct. The ligation product was transformed into DH5&alpha;, giving some positive green colonies expressing GFP.</span>
                         </p>
                         </p>
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/b/b2/Units-bkgR.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/b/b2/Units-bkgR.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/5/51/Units-dia6-4.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>Positive colonies were expanded and the extracted and digested with EcoRI/PstI. The digested fragments were finally ligated into the kanamycin-resistant vector pSB1K3, then transformed into DH5a and seeded with the appropriate antibiotic, in order to allow the selective growth only of the colonies carrying our construct B1 ligated in the new plasmid.</span>
+
                             <img src="https://static.igem.org/mediawiki/2011/5/51/Units-dia6-4.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>Positive colonies were expanded and the extracted and digested with EcoRI/PstI. The digested fragments were finally ligated into the kanamycin-resistant vector pSB1K3, then transformed into DH5&alpha; and seeded with the appropriate antibiotic, in order to allow the selective growth only of the colonies carrying our construct B1 ligated in the new plasmid.</span>
                         </p>
                         </p>
 +
<p class="full-descr-bat">
 +
<b>Notes:</b><br/>
 +
It has been planned to join in this high copy number plasmid also the parts present in the other medium copy number plasmid (PLasI-TraI and PConst-LasR). This strategy was performed with success during the last week.
 +
<center><img src="https://static.igem.org/mediawiki/2011/3/3e/Units-notes-strainB.PNG" border="0" width="500" /></center>
 +
</p>
                     </div>
                     </div>
                 </div>
                 </div>
-
                 <div id="pTraI-glucosidase" class="descr-team">
+
                 <div id="Pcost-LasI" class="data_box">
-
                     <h1>pTraI-glucosidase</h1>
+
                     <h1>Pcost-LasI</h1>
                     <div>
                     <div>
-
                        <p>
+
                    <img style="float:left;" src="https://static.igem.org/mediawiki/2011/5/53/Units-lasI-0.png" border="0" width="180"/>
-
                            <br/>
+
                         <p style="width:480px; float:right;">
-
                            This plasmid hosts an TraR - OC8 HLA inducible promoter (BBa_K553002). Once this OC8 HLA has bound the TraR trans-activator the beta-glucosidase (Bba_K392008) transcription is activated thus the bacteria can transform the cellobiose in glucose and use it as a source of energy.
+
                        This plasmid contains a constitutive promoter (BBa_J23100) that guarantee a continuous production of the LasI synthase (BBa_K081016) that in turn produces the 3OC12 AHL autoinducer.
-
                            <br/>
+
-
                            The plasmid provides also to generate constitutively RFP and host a kanamycin resistance.
+
-
                            <br/>
+
-
                            TraR and Prom TraI are new biobrick obtained by Agrobacterium Tumefacens
+
-
                            <br/>
+
-
                            <br/>
+
-
                        </p>
+
-
                        <img src="https://static.igem.org/mediawiki/2011/e/ed/Units-dia3-0.JPG" border="0" width="200" onClick="if($(this).width()==200) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'200px'}); }"/>
+
-
                        <center>
+
-
                            <h3>Generation of PromTraI - RBS - Glucosidase - terminator</h3>
+
-
                        </center>
+
-
                         <p class="full-descr-bat">
+
-
                            To build this plasmid we used the following parts:
+
-
                            <br/>
+
-
                            <span class="list">-</span>Promoter TraI from <b>A. Tumefaciens</b>
+
-
                            (New!) - 151 bp
+
-
                            <br/>
+
-
                            <span class="list">-</span>RBS <b>BBa_J15001</b>
+
-
                            + Glucosidase <b>BBa_K392008</b>
+
-
                            composite Biobrick - 1681 bp
+
-
                            <br/>
+
-
                            <span class="list">-</span>Terminator <b>BBa_B0015</b>
+
-
                            - 129 bp
+
-
                            <br/>
+
-
                            To learn more about how we obtained PromTraI, see plasmid PromTraI - RBS - LasI - terminator
+
                         </p>
                         </p>
 +
<span class="clear"></span>
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/7/79/Units-dia3-1.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>The double terminator BioBrick (BBa_B0015) has been resuspended and then amplified through transformation into DH5a competent cells. The plasmid was then extracted and digested (EcoRI/XbaI).</span>
+
                             <img src="https://static.igem.org/mediawiki/2011/7/7a/Units-lasI-1.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/>
-
                            <span>The RFC10 compatible RBS-Glucosidase plasmid (BBa_J15001 + BBa_K392008), a gift from Dr. C. French (University of Edinburgh), was transformed into DH5a, extracted and digested (EcoRI/SpeI). The glucosidase was then ligated inside the BBa_B0015 vector and transformed into DH5a. The transformed colonies were  screened with colony PCR  (primers: vf2 and Vr), using the following protocol:</span>
+
<span>The LasI generator device present in the registry – BBa_K081016 - has been resuspended and then amplified through transformation into DH5&alpha; competent cells. The plasmid was then extracted and digested (XbaI/PstI).
-
                            <span class="centered">93° 5' | 30x(95° 30" | 50° 30" | 72° 60") | 72° 7' | 4° &#8734;</span>
+
<br/>At the same time the constitutive promoter containg plasmid was processed in the same way except for the digestion (SpeI/ PstI).</span>
                         </p>
                         </p>
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/0/08/Units-bkgY.png)">
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/0/08/Units-bkgY.png)">
-
                             <img src="https://static.igem.org/mediawiki/2011/a/a0/Units-dia3-2.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>The plasmid was extracted from the positive colonies and then digested with EcoRI/XbaI in order to linearize it and ligate it to PromTraR, previously digested with EcoRI/SpeI.
+
                             <img src="https://static.igem.org/mediawiki/2011/6/6e/Units-lasI-2.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/>
-
                                <br/>
+
<span>The obtained composit part is then transfered to a medium copy plasmid (pBBR)</span>
-
                                DH5a were transformed with the ligation product and the resulting colonies were PCR-screened (primers: vf2 and Vr). The first screening used the following protocol:
+
</p>
-
                            </span>
+
<p class="full-descr-bat">
-
                            <span class="centered">93° 5' | 30x(95° 30" | 50° 30" | 72° 60") | 72° 7' | 4° &#8734;</span>
+
<b>Notes:</b><br/>
-
                            <span>There was no amplification: probably the sequence is too long.
+
It has been planned to insert the RFP reporter (BBa_I13522) downstream this part and to obtain all the elements on a single plasmid. This strategy was performed with success during the last week of work.
-
                                <br/>
+
<center><img src="https://static.igem.org/mediawiki/2011/7/75/Units-notes-strainA.PNG" border="0" width="500" /></center>
-
                                An alternative protocol, which made use of different and more specific primers flanking the PromTraR sequence (primers: PromTra Fw and PromTra Rev), was employed:
+
</p>
-
                            </span>
+
                    </div>
-
                            <span class="centered">93° 5' | 30x(95° 30" | 65° 30" | 72° 30") | 72° 7' | 4° &#8734;</span>
+
</div>
-
                            <span>The second screening identified some positive colonies, giving a PromTraR amplicon of less than 200 bp. These positive colonies were then amplified to extract suitable amounts of the plasmid.</span>
+
<div id="Pcost-RFP" class="data_box">
-
                            <span>The control digestion of the complete plasmid with EcoRI/PstI showed something unexpected, so we sent the DNA to sequence and in the meantime we started to build again our glucosidase construct from the beginning.</span>
+
                    <h1>Pcost-RFP</h1>
-
                            <span>
+
                    <div>
-
                            We restarted from a different colony of BBa_J15001 and extracted its plasmid. We obtained a clean EcoRI/SpeI cut and ligated it to the glucosidase inside the vector containing the terminator with different strategies. For each ligation, a transformation and a colony PCR have been made (primers: vf2 and Vr).
+
                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/1/19/Units-bkgG.png)">
-
                            </br>
+
                             <img src="https://static.igem.org/mediawiki/2011/3/3b/Units-RFP-1.png" border="0" class="toggler" width="700" onclick="$(this).parent().find('span').animate({height:'toggle'});"/>
-
                            The last colony PCR finally showed some positive colonies. The protocol used was different, in order to bypass the problem of the amplicon length:</span>
+
<span>High copy number plasmid (pSB1K3) containing mRFP (BBa_I3521).</span>
-
                        <span class="centered">93° 5' | 30x(95° 30" | 50° 30" | 72° 90") | 72° 7' | 4° &#8734;</span>
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                        <span>The plasmid was exracted from one positive colony, then digested with EcoRI/SpeI. Finally it was ligated to the EcoRI/SpeI-cut PromTraR.
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                            <br/>
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                            DH5a were subsequently transformed and PCR-screened with different protocols: one amplifying the whole sequence and another specific for the PromTraR sequence. The former gave no result, but the latter revealed the incorporation of the promoter inside the glucosidase vector.
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                            <br/>
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                            Some of the positive colonies were then chosen to amplify and extract the plasmid.
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                        </span>
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                        <span>We quality-controlled the plasmid with an EcoRI/PstI digestion, which showed as expected the construct at about 2000 bp and the plasmid backbone at 3000 bp.</span>
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                        <span><img src="https://static.igem.org/mediawiki/igem.org/thumb/4/42/Units-dia3-2_1.jpg/800px-Units-dia3-2_1.jpg" border="0" width="400" onClick="if($(this).width()==400) { $(this).stop().css('z-index',99).animate({width:'700px'}); $('#popupContact').scrollTo(this,{duration:300, offset: {top:-8, left:0}}); } else if($(this).width()==700) { $(this).stop().css('z-index',10).animate({width:'400px'}); }" style="margin:0 auto;"/></span><span>This DNA was sent to sequence and the results have been analyzed and compared with the previous construct we had made. The composite construct is correct but we found out some mutations in the glucosidase sequence. </span>
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                        </p>
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                        <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/9/97/Units-bkgB.png)">
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                            <img src="https://static.igem.org/mediawiki/2011/0/09/Units-dia3-3.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>To complete our construct, the BBa_I13521 PTet mRFP has been resuspended, transformed, extracted and digested with XbaI/PstI. The fragment has been purified from gel and ligated into our SpeI/PstI-digested construct, and then transformed into DH5a. </span>
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                        </p>
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                         <p class="descr-bat" style="background-image:url(https://static.igem.org/mediawiki/2011/b/b2/Units-bkgR.png)">
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                             <img src="https://static.igem.org/mediawiki/2011/6/6c/Units-dia3-4.png" border="0" width="800" onclick="$(this).parent().find('span').animate({height:'toggle'});"/><span>The plasmid obtained from the positive colonies, which were visibly red for the expression of mRFP, was digested with EcoRI/PstI and then cloned into the kanamycine-resistant pSB1K3 expression vector.
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                                The positive red colonies growing from this last ligation contained our completed construct in the new plasmid.
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Latest revision as of 15:39, 28 October 2011

SYNBIOME

Click for details on image clickable areas!
https://static.igem.org/mediawiki/2011/c/c6/Units-model.png
strainA strainB strainC
Produced AHL 3OC12 AHL 3OC8 AHL -
Responds to - 3OC12 AHL 3OC8 AHL
Generated reward - Β-glucosidase
(Cellobiose to glucose)
Secreted Β-lactamase
Direct dependence B&C A&C A&B
Validated
https://static.igem.org/mediawiki/2011/c/c6/Units-model.png BacteriaA BacteriaB EukaryoticCell BacteriaA BacteriaB EukaryoticCell https://static.igem.org/mediawiki/2011/9/96/Units-model-Ya.png https://static.igem.org/mediawiki/2011/3/37/Units-model-Ra.png https://static.igem.org/mediawiki/2011/2/26/Units-model-Ba.png

pTraBox

Excision of CMV from pIRES2-EGFP and following riligation of the backbone



pIRES2-EGFP supplied by Clontech has been digested in AseI and NheI (Fig.1) in order to remove the constitutive CMV promoter and then the linearized backbone has been purified using the "Wizard Gel Clean Up System" by Promega.


Figure 1

The extremities of the linearized backbone have been blunted in order to allow its self ligation.
XL10-GOLD competent cells have been transformed with the products of ligation and then minipreps have been done.
The colonies have been checked by enzymatic digestion with NdeI and BamHI, the positives must show only one excised fragment of 600bp (Fig.2).


Figure 2

Excision of TraBox-CMV from pSEAP

pSEAP has been double digested with EcorI and NotI in Buffer EcoRI plus BSA in 30ul total.
The digestion has been checked on agarose Gel 0.8% W/V.
The fragment corrensponding to the TraBox/CMVmin has been purified using the "Wizard Gel Clean Up System" by Promega.

Cloning TraBox-CMVmin in pCDNA3 using NotI- EcoRI sites:



pCDNA3 has been previously cut in EcorI and NotI in order to obtain the linearized backbone ready for the cloning of TraBox-CMVmin.
Different Condition of ligation has been performed looking for the best efficiency.
The colonies obtained in this way have previously been screened by colony pcr and then checked by enzymatic digestion.
All the digested colonies were positive, the fragment excised by the EcorI/XhoI double digeston is the TraBox-CMVmin. (Fig.3)


Figure 3

One of the positives has been chosen and then amplified by trasformation in XL10-GOLD competent cells. The plasmidic DNA has been purified using a commercial Kit supplied by Promega.
The Plasmidic DNA has been subsequently digested in EcoRI and XhoI in order to obtain the same insert previously cloned provided by the XhoI sites.
The insert TraBox-CMVmin has been purified using the "Wizard Gel Clean Up System" by Promega.

Cloning TRABOXCMVmin in pIRES2-EGFP/CMV- using EcorI/XhoI sites in order to obtain pTraBOX-IRES-EGFP



TraBox-CMVmin has to be cloned in the pIRES2-EGFP/CMV- previously digested in EcoRI XhoI.(Fig.4)


Figure 4

The linearized backbone has been purified using the "Wizard Gel Clean Up System" by Promega and then ligated with the TraBox-CMVmin as insert.
Different Condition of ligation has been performed looking for the best efficiency.
XL10-GOLD competent cells have been transformed with the products of ligation and then minipreps has been done.
The plasmidic DNA so obtained has been screened by enzymatic digestion using EcoRI and XhoI. The positives have to show the TraboxCMVmin excised in agarose gel electrophoresis separation (Fig5).
Colony N°2 and 4 has been chosen as positive and amplified in order to obtain more plasmidic DNA.


Figure 5

Cloning sBLA in pTraBox-IRES-EGFP



sBLA has to be cloned in the pTRABOX-IRES-EGFP previously digested in EcoRI - BamHI.
The linearized backbone has been purified using the "Wizard Gel Clean Up System" by Promega and then ligated with the sBLA as insert.
Different Condition of ligation has been performed looking for the best efficiency.
XL10-GOLD competent cells have been transformed with the products of ligation and then minipreps has been done.
The plasmidic DNA so obtained has been screened by enzymatic digestion using EcoRI and BamHI.
The positives have to show the sBLA excised in agarose gel electrophoresis separation(Fig.6).


Figure 6

Colony N°4 and N°5 have been chosen as positive and amplified in order to obtain more plasmidic DNA.

Checking the final constructs pTRABOX-sBLA-IRES-EGFP

In order to check the final constructs both the plamidic DNA obtained by the clone N°4 and 5 has been digested with: -   EcoRI-BamHI: sBLA has to be excised
-   EcoRI-XhoI: TraBoxCMVmin has to be excised
-   NdeI-BamHI: The construct has to be linearized
All the digestions have been checked in Gel electrophoresis separation on Agarose 1% W/V (Fig.7)


Figure 7

P65-TraR

AHL Sensible Eukaryotic Switch

We decided to use p65-TraR (Neddermann P. et al., 2003), kindly provided by Dr. R. Cortese's group, as a eukaryotic genetic switch sensible to AHL-OXOC8. This chimerical protein is composed by a portion of the human p65, a NLS signal and the whole TraR. (Fig.1)


Figure 1

The gene received by Dr. R. Cortese's group doesn't fit the RCF10 standard because it presents several EcoRI, PstI and XbaI restriction sites (RS) inside the coding sequences. Based on this evidence we decided to design a new p65-TraR that would fit the RCF10 standards in terms of RS inside the coding sequence and the presence of Prefix and Suffix. In this way the BBa_K553023 has been generated. DNA2.0 performed the P65-TraR gene synthesis and optimization for the expression in mammals systems.


Figure 2

The P65-TraR in our system represents the most important element because it makes possible the communication between the two kingdoms. Using the TraR protein it can recognize both AHL-OXOC8 and the TraBox region and thanks to the NLS signal and the p65 it can migrate in the nucleus, where it acts as an eukaryotic trans-activator. (Fig.3)


Figure 3

LASnlator

This part, made of two composite Biobrick, provides the continuous presence of LasR.
This trans-activator is ready to bind OC8 AHL and then it positively regulates the transcription of both the cellobiosidase and LasI, the OC8 AHL synthase present on the same plasmid.

Generation of: Constitutive Promoter - RBS - LasR - Terminator To build this plasmid we used the following parts:
    -  Constitutive Promoter BBa_J23100 - 35 bp
    -  RBS BBa_B0034 - 12 bp
    -  Las R (coding region) BBa_C0179 - 723 bp
    -  Terminator BBa_B0015 - 129 bp
These BioBricks transformed into DH5α, as suggested by the iGEM protocol. BBa_C0179 was digested with EcoRI/SpeI in order to isolate the LasR. BBa_B0015 was linearized with an EcoRI/XbaI-digestion and LasR was ligated ahead of the terminator. The ligated product was than transformed into DH5α and seeded in the presence of the appropriate antibiotic. The growing colonies were tested with a colony PCR (Vf-Vr2 primers), following this protocol: 93° 5' | 30x (95° 30" | 50° 30" |72° 60'') | 72° 7'| 4° ∞ The positives, highlighted through electrophoresis, have been expanded and the plasmid extracted.
The same steps were followed to verify the ligation of LasR-Terminator (XbaI/PstI digested) downstream the RBS (BBa_B0034). The positive colonies were extracted and the plasmids have been digested with XbaI/PstI. The RBS-LasR-Terminator fragments were inserted in the plasmid BBa_J23119 at first but, as seen with other constructs, this promoter didn't work as expected. So, finally we ligated them inside a different promoter, BBa_J23100, previously digested with SpeI/PstI in order to eliminate the RFP reporter and linearize the backbone. As always, the ligation product was tested with the colony PCR and the positive colonies were inoculated to extract the plasmids.
The final BioBrick was tested with an EcoRI/PstI cut, giving our insert long 921 bp, whilst the plasmid is 2000 bp (see figure below). To make LAS- "n"lator suitable for our system, this plasmid was ligated to the PromLasR - TraI BioBrick and inserted into the kanamycin resistant vector pBBR1MCS-3.

Generation of: PromLasI - RBS - TraI - Terminator To build this plasmid we used the following parts:
    -  Promoter Las R regulated BBa_R0079 - 157 bp
    -  RBS BBa_B0034 - 12 bp
    -  TraI from A. tumefaciens (New!) - 639 bp
    -  Terminator BBa_B0015 - 129 bp
The BioBricks BBa_R0079, B0034 and B0015 were resuspended and transformed into DH5α cells. The PromLasR was digested with EcoRI/SpeI and checked on gel electrophoresis. The purified fragments were ligated upstream of the EcoRI/XbaI-digested RBS and then transformed into DH5α. Then a colony PCR was run to check the transformed colonies (primers: Vf2 & Vr). The protocol used was the following: 93° 5' | 25x(93° 30" | 50° 30" | 72° 40") | 72° 7' | 4° ∞ The positive colonies were expanded, their plasmids extracted and then linearized with a SpeI/PstI digestion.
Meanwhile, a PCR amplification of TraI was made from the gDNA of A. tumefaciens with TaqPol, following this PCR protocol (oligos on parts page):
95° 5' | 10x(93° 30" | 56° 30" | 72° 40") | 23x (93° 30" | 65° 30" | 72° 40") | 72° 7' | 4° ∞ The TraI amplification, to which the EcoRI and PstI restriction sites were added through the PCR primers, was verified on gel electrophoresis, extracted and then digested with EcoRI/PstI.
The digested fragment was ligated into pBSIIK and transformed into DH5α. Positive white colonies growing on Xgal-LB agar plates were checked for the presence of TraI with the following colony PCR protocol (PTraI oligo on parts page):
93° 5' | 25x(95° 30" | 65° 30" | 72° 40") | 72° 7' | 4° ∞ The PCR amplification was checked on gel electrophoresis, and the positive colonies selected for sequencing. When the sequencing was completed, we analyzed and selected the mutation-free samples.
TraI was digested with EcoRI/SpeI in order to ligate it in ahead of the terminator, previously digested with EcoRI/XbaI. The ligated product was transformed into cells and the resulting colonies were checked with a colony PCR (prmers: vf2 and vr):
93° 5' | 25x(95° 30" | 50° 30" | 72° 60") | 72° 7' | 4° ∞ The positive colonies were expanded and their plasmids extracted.
The TraI-Terminator fragment was isolated with a XbaI/PstI digestion, and then ligated into the previously linearized plasmid containing the PromLasI-RBS. We thus transformed DH5α and subsequently performed a colony PCR with the same protocol used before, in order to expand the positive colonies and extract the plasmids.
The completed BioBrick was checked through an EcoRI/PstI digestion and sequencing. The digested fragment of B3 was of the appropriate length (937 bp), as confirmed with gel electrophoresis (see figure below).

pLasI-glucosidase

This plasmid hosts an OC12 AHL inducible promoter: LasI (BBa_R0079). Once OC8 AHL binds the LasR trans-activator (BBa_C0179) the cellobiosidase transcription is activated thus the bacteria itself can transform the cellobiose in glucose and use it as a source of energy.
The plasmid provides also to constitutively generate the GFP and host a kanamycin resistance.

Generation of: PromLasI - RBS - Glucosidase - terminator

To build up this plasmid we used the following parts:
-Promoter Las I BBa_R0079 - 157 bp
-RBS BBa_J15001 + Glucosidase BBa_K392008 composite Biobrick - 1681 bp
-Terminator BBa_B0015 - 129 bp

The double terminator BioBrick (BBa_B0015) has been resuspended and then amplified through transformation into DH5α competent cells. The plasmid was then extracted and digested (EcoRI/XbaI). The RFC10 compatible RBS-Glucosidase plasmid (BBa_J15001 + BBa_K392008), a gift from Dr. C. French (University of Edinburgh), was transformed into DH5α, extracted and digested (EcoRI/SpeI). The glucosidase was then ligated inside the BBa_B0015 vector and transformed into DH5α. The transformed colonies were screened with colony PCR (primers: Vf and Vr2), using the following protocol: 93° 5' | 30x(95° 30" | 50° 30" | 72° 60") | 72° 7' | 4° ∞ As seen with other constructs, the first ligation made with the constitutive promoter was not successful: the DNA sequencing confirmed that. The construct was then built again from the beginning.

Unlike PromTraI-Glucosidase, the EcoRI/XbaI-digested RBS-glucosidase-terminator vector was ligated with PromLasI, previously cut with EcoRI/SpeI. Different ligation strategies were attempted and later DH5α were transformed. We then performed a colony PCR with the following protocol (PromTrFw and PromTraRev): 93° 5' | 30x(95° 30" | 50° 30" | 72° 70") | 72° 7' | 4° ∞ Positive colonies were expanded and their plasmids extracted. We then proceeded with the quality control: the plasmid was control-digested with EcoRI/PstI and checked on gel electrophoresis, showing the expected pattern with the construct at about 1850 bp and the plasmid backbone at less than 3000 bp. This plasmid was sent to sequence and the results were analyzed and compared with the irregular construct we'd previously made. The composite construct is correct but we observed some mutations in the glucosidase sequence.

To complete our construct, the BBa_I13522 PTet GFP was resuspended, transformed, extracted and digested with XbaI/PstI. This fragment was then ligated into our SpeI/PstI-digested construct. The ligation product was transformed into DH5α, giving some positive green colonies expressing GFP.

Positive colonies were expanded and the extracted and digested with EcoRI/PstI. The digested fragments were finally ligated into the kanamycin-resistant vector pSB1K3, then transformed into DH5α and seeded with the appropriate antibiotic, in order to allow the selective growth only of the colonies carrying our construct B1 ligated in the new plasmid.

Notes:
It has been planned to join in this high copy number plasmid also the parts present in the other medium copy number plasmid (PLasI-TraI and PConst-LasR). This strategy was performed with success during the last week.

Pcost-LasI

This plasmid contains a constitutive promoter (BBa_J23100) that guarantee a continuous production of the LasI synthase (BBa_K081016) that in turn produces the 3OC12 AHL autoinducer.

The LasI generator device present in the registry – BBa_K081016 - has been resuspended and then amplified through transformation into DH5α competent cells. The plasmid was then extracted and digested (XbaI/PstI).
At the same time the constitutive promoter containg plasmid was processed in the same way except for the digestion (SpeI/ PstI).

The obtained composit part is then transfered to a medium copy plasmid (pBBR)

Notes:
It has been planned to insert the RFP reporter (BBa_I13522) downstream this part and to obtain all the elements on a single plasmid. This strategy was performed with success during the last week of work.

Pcost-RFP

High copy number plasmid (pSB1K3) containing mRFP (BBa_I3521).