Difference between revisions of "Team:Aix-Marseille/Composite Part"

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==Mobilisation by a Siderophore==
<title>Chew fight</title>
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===[http://parts.igem.org/Part:BBa_K1951004 BBa_K1951004] : DesA producer===
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====Part Composition:====
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[[File:T--Aix-Marseille--desA.png|400px|right]]
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This part is composed of 3 subparts :
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* [http://parts.igem.org/Part:BBa_I0500 I0500] : pARA/araC inducible promoter
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* [http://parts.igem.org/Part:BBa_B0034 B0034] : Ribosome Binding Site
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* [http://parts.igem.org/Part:BBa_K1951000 K1951000] : Lysine decarboxylase
  
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====Lysine decarboxylase DesA :====
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This DNA sequence codes a [http://metacyc.org/gene?orgid=META&id=SCO2782 Lysine decarboxylase] (''Streptomyces coelicolor'') which is an enzyme from the lyase family that converts lysine into cadaverine. The enzyme releases the carbonyl group of the lysin amino acid. Cadaverine (or 1,5-diaminopentane) is a primary diamine which renders the medium alkaline. The lysine decarboxylase is an enzyme whose synthesis is promoted by anaerobiosis and an acidic pH.  
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This enzyme is also the first step in the production of desferrioxame B which is a siderophore.
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We succeed to produce DesA under an Arabinose indcution.
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                                    <li  ><a href="/Team:Aix-Marseille/Practices">Practices</a></li> 
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[[File:T--Aix-Marseille--result9.png|center|350px]]
                                 
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                                        <li ><a href="/Team:Aix-Marseille/Sequencing/data">Sequencing data</a></li>                                 
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                                    <li class="dropdown " id="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">Modeling</a>
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                                      <ul class="dropdown-menu">
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                                        <li ><a href="/Team:Aix-Marseille/Modeling">Modeling</a></li>
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                                        <li ><a href="/Team:Aix-Marseille/Software">Software</a></li>                                 
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                                </ul>
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We registered the original sequence of this subpart in the iGEM registry of standard parts ([http://parts.igem.org/Part:BBa_K1951000 BBa_K1951000]). We optimized our sequence for ''E. coli'' and ordered the synthesis by addition of an inducible promoter.
                               
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                          </div>
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As you can see in [http://parts.igem.org/Part:BBa_K1951004 the registry] all our expectations on this BioBrick were validated and it worked fine.
  
 +
===[http://parts.igem.org/Part:BBa_K1951011 BBa_K1951011] : Desferrioxamine B pathway producer in <i> Streptomyces coelicolor </i> ===
  
 
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<div class="emph">
 
+
The purpose of this biobrick is to produce desferrioxamine B siderophore by a controled manner, for controlled potential toxicity. This is also to reconstruct the full pathway of this siderophore production.
    <!-- end hearo section -->
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<div class="container-fluid">
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<div align="center"><h2 class="title wow bounce in up"><span style="color:#8E3B8C"><span style="font-family:Armalite Rifle">Parts</div>
+
  
      <!-- start section 1 -->
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This biobrick was made from 6 parts:
    <section style="padding:30px 0px 50px;" class="arrow_box" id="team">
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    <div class="container">
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    <div class="row">
+
    <div class="col-md-6 left">
+
    <div align="center"><h2 class="title wow bounce in up"><span style="color:#8E3B8C"><span style="font-family:Armalite Rifle">New biobricks using existing ones</div>
+
</h2></span></span>
+
    <div class="space30"></div>
+
    <p class="space20"><div align="justify"><span style ="font-family:Courier New">We use existing biobrick to create new biobricks we needed:
+
<ul><br/>
+
<li>-T7 promoter with RBS (Bba_K525998) and optimized Laccase from <i>T.Thermophilus</i> (Bba_K863011), protein likely to be more thermostable by its origin. A tag 10xHis (Bba_K844000)is located to the end of the protein (Cterm) to enable its purification (BBa_K1601015)</li><br/>
+
<li>-T7 promoter with RBS and optimized Laccase from <i>T.Thermophilus</i>, protein likely to be more thermostable by its origin. The stop codon has been deleted to facilitate a protein fusion (BBa_S05313)</li>
+
</ul>
+
</div></p></span>
+
  
 +
Available in the registry :
 +
* [http://parts.igem.org/Part:BBa_I0500 BBa_I0500]
 +
* [http://parts.igem.org/Part:BBa_B0034 BBa_B0034]
  
    </div>
+
Designed by our team :
    <div class="col-md-5 col-md-offset-1  col-sm-offset-1  space30">
+
* [http://parts.igem.org/Part:BBa_K1951000 BBa_K1951000]
<br/><br/><br/><br/><br/><br/><br/><br/><br/>
+
* [http://parts.igem.org/Part:BBa_K1951001 BBa_K1951001]
                          <img src="https://static.igem.org/mediawiki/2015/3/35/Our.png" class="img-responsive" width="475" height="325">
+
* [http://parts.igem.org/Part:BBa_K1951002 BBa_K1951002]
                         
+
* [http://parts.igem.org/Part:BBa_K1951003 BBa_K1951003]
  
   
+
</div>
    </div>
+
    </div>
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            <div class="space30"></div>
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    </div>
+
  
    </section>
 
    <div class="clearfix"></div>
 
  
      <!-- start section 2 -->
+
Siderophores are small, high-affinity iron chelating compounds secreted by microorganisms such as bacteria, fungi and grasses. Siderophores are amongst the strongest soluble Fe3+ binding agents known.
  <section style="padding:30px 0px 50px;" class="arrow_box" id="team">
+
   
+
    <div class="container">
+
    <div class="row">
+
    <div class="col-md-6 left">
+
    <div align="center"><h2 class="title wow bounce in up"><span style="color:#8E3B8C"><span style="font-family:Armalite Rifle">New biobricks we designed</div>
+
</h2></span></span>
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    <div class="space30"></div>
+
    <p class="space20"><div align="justify"><span style ="font-family:Courier New">We use sequences whiche were not present in the biobrick registry to create new biobricks we needed:<br/>
+
<ul>
+
<li>-Cytochrome C <i>Synechocystis sp</i> (BBa_K1601001), a cyanobacteria that suggests a cytochrome c </li><br/>
+
<li>-Cytochrome C of <i>S.oneidensis</i> (BBa_K1601000), a proteobacterium which can live in both environments with or without oxygen that suggests a cytochrome with high activity. The stop codon has been deleted to facilitate a protein fusion.</li><br/>
+
<li>-Heme A from <i>E.coli</i> K12 (BBa_K1601002)that enables the heme overproduction</li><br/>
+
<li>-Yeast signal CXXCH from <i>Synechocystis sp</i> responsible for the <i>S.oneidensis</i> CytC translocation into the periplasm using TAT system (BBa_S05319)</li><br/>
+
<li>-Yeast signal CXXCH from <i>Synechocystis sp</i> responsible for the <i>Synechocystis sp</i> CytC translocation into the periplasm using TAT system (BBa_S05320)</li><br/>
+
</ul>
+
</div></p></span>
+
  
 +
==== A precious metal binder ====
 +
Previous work showed that siderophores are able to catch other metals by default. Especifically, many articles showed a high affinity of Desferrioxamine B (produce by ''Streptomyces coelicolor'') for tetravalent metal ions like platinum. These results encouraged us to make a biobrick coding the sequence corresponding to the 4 enzymes involved on the metabolic pathway of Desferrioxamine B. <i>E. coli</i> was used to produce this biobrick. Produce a gram positive bacteria pathway in a gram negative bacteria is restrictive <ref> Wandersman & Delepaire https://www.ncbi.nlm.nih.gov/pubmed/15487950  </ref> , considering the risk of toxicity for themselves. To counter this potential issue, we regulate transcription using the control of an inductible promotor (pBAD/araC).
  
    </div>
+
====A medical treatment====
    <div class="col-md-5 col-md-offset-1  col-sm-offset-1  space30">
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<br/><br/><br/><br/><br/><br/>
+
                          <img src="https://static.igem.org/mediawiki/2015/c/cd/Idqfgfg.png" class="img-responsive" width="1000" height="400">
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+
  
   
+
Desferrioxamine B is a really well referenced siderophore.
    </div>
+
    </div>
+
            <div class="space30"></div>
+
    </div>
+
  
    </section>
+
Deferoxamine acts by binding free iron in the bloodstream and enhancing its elimination in the urine. By removing excess iron, the agent reduces the damage done to various organs and tissues, such as the liver. Also, it speeds healing of nerve damage (and minimizes the extent of recent nerve trauma).  
    <!-- start section 3 -->
+
<section style="padding:30px 0px 50px;" class="arrow_box" id="team">
+
   
+
    <div class="container">
+
    <div class="row">
+
    <div class="col-md-6 left">
+
    <div align="center"><h2 class="title wow bounce in up"><span style="color:#8E3B8C"><span style="font-family:Armalite Rifle"> Linkers we designed</div>
+
</h2></span></span>
+
    <div class="space30"></div>
+
    <p class="space20"><div align="justify"><span style ="font-family:Courier New">We designed some linker to facilitate the meeting of the laccase and the cytochrom C
+
</p></span></div>
+
<p class="space20"><div align="justify"><span style ="font-family:Courier New">
+
<ul>
+
<li style="list-style-type:circle;">Rigid and structured linker designed to link (or connect) Laccase <i>T.Thermophilus</i> and CytC <i>S.oneidensis (BBa_K1601008)</i></li> <br/>
+
<li style="list-style-type:circle;">Rigid and structured linker designed to link (or connect) Laccase <i>T.Thermophilus</i> and CytC <i>P.denitrificans (BBa_K1601011)</i></li><br/>
+
<li style="list-style-type:circle;">Rigid and structured linker designed to link (or connect) <i>T.Thermophilus</i> and CytC <i>Synechocystis sp(BBa_K1601013)</i></li><br/>
+
<li style="list-style-type:circle;">Rigid and structured linker designed to link (or connect) Laccase <i>E.coli</i> and CytC <i>P.denitrificans (BBa_K1601009)</i></li><br/>
+
<li style="list-style-type:circle;">Rigid and structured linker designed to link (or connect) Laccase <i>E.coli</i> and CytC <i>Synechocystis sp (BBa_K1601010)</i></li><br/>
+
<li style="list-style-type:circle;">Rigid and structured linker designed to link (or connect) Laccase <i>E.coli</i> and CytC <i>S.oneidensis(BBa_K1601012)</i></li>
+
</ul> </div></p></span>
+
  
 +
* It is currently used of on the World Health Organization's List of Essential Medicines, the most important medications needed in a basic health system. But it is used in the treatment of many others diseases as well.
  
    </div>
+
* Desferrioxamine B may modulate expression and release of inflammatory mediators by specific cell types.
    <div class="col-md-5 col-md-offset-1  col-sm-offset-1  space30">
+
<br/><br/><br/><br/><br/><br/>
+
                            <img src="https://static.igem.org/mediawiki/2015/7/78/Idqfj%2Cg.png" class="img-responsive" width="600" height="1200">
+
                         
+
  
   
+
==== Pathway demonstration ====
    </div>
+
    </div>
+
</div>
+
            <div class="space30"></div>
+
    </div>
+
  
    </section>
+
[[File:T--Aix-Marseille--result7.jpeg|500px|right|thumb|Test of our biobrick proteins production using a SDS PAGE and coomassie blue staining. - : no induction ; + : induction with 0.02% arabinose at Abs(600nm)=0.4]]
<section style="padding:30px 0px 50px;" class="arrow_box" id="team">
+
We investigated if the DesA, DesB, DesC and DesD proteins were well produced by our biobrick [http://parts.igem.org/Part:BBa_K1951011 BBa_K1951011] using SDS PAGE.  
   
+
    <div class="container">
+
    <div class="row">
+
    <div class="col-md-6 left">
+
    <div align="center"><h2 class="title wow bounce in up"><span style="color:#8E3B8C"><span style="font-family:Armalite Rifle">New biobricks using existing ones</div>
+
</h2></span></span>
+
    <div class="space30"></div>
+
    <p class="space20"><div align="justify"><span style ="font-family:Courier New">We use existing biobrick to create new biobricks we needed:<br/>
+
<ul>
+
    <li>-Yeast signal CXXCH from <i>Synechocystis sp</i> responsible for the S. oneidensis CytC translocation into the periplasm using TAT system</li>
+
    <li>-T7 promoter with RBS and Laccase E.coli (Bba_K863006) without stop codon. The stop codon has been deleted to facilitate a protein fusion.(BBa_K1601003)</li>
+
    <li>-T7 promoter with RBS and Laccase T.Thermophilus (Bba_K863011) without stop codon. The stop codon has been deleted to facilitate a protein fusion.(BBa_K1601004)</li>
+
    <li>-Cytochrome C Heme Lyase (CCHL)(BBa_K1601005)</li>
+
    <li>-Yeast signal CXXCH (BBa_K1601006)</li>
+
    <li>-Cytochrome C P.Denitrificans (BBa_K1601007)</li>
+
    <li>-Cytochrome C Synechocystis sp - His Tag (BBa_S05314)</li>
+
    <li>-Cytochrome C S.oneidensis - HisTag (BBa_S05315)</li>
+
</ul>
+
</div></p></span>
+
  
 +
To do this we performed SDS PAGE [https://2016.igem.org/Team:Aix-Marseille/Experiments/Protocols#Protocol_.2312_:_SDS_page_and_coomassie_blue (protocol)] and stained with coomassie blue using cells containing this biobrick. From an over night starter, cells were diluted and grown from Abs(600nm)=0.2 to Abs(600nm)=1.
 +
Then 1UOD of cells (1.67ml at 0.6OD) was collected and centrifuged at 5000g for 5min.
 +
After removal of the supernatant, the cell pellet was resuspended in 50µL SDS-PAGE sample buffer.
 +
We heated the mix at 95°C during 15min.
 +
The sample was loaded onto a polyacrylamide gel and migrated during 50min at 180V.
 +
Staining was done using coomassie blue.
 +
 +
We compared the production of proteins in different background :
 +
 +
- <i>E. coli</i>  TG1 strain with pSB1C3 containing the RFP coding sequence (negative control)
 +
 +
- <i>E. coli</i>  TG1 strain with <i>des</i> operon ([http://parts.igem.org/Part:BBa_K1951011 BBa_K1951011]) before and after induction. (You can observe the production of the 4 proteins on the figure on the right; left : before induction, right : after induction)
 +
 +
Results showed the production of the 4 proteins DesA, DesB, DesC and DesD, all involved in the desferrioxamine B biosynthesis pathway. We can notice that a leak of the promoter pBAD, indeed we note the production of Des proteins without arabinose induction.
 +
 +
==Biosorption parts ==
 +
 +
=== [http://parts.igem.org/Part:BBa_K1951008 BBa_K1951008] : FliC ''E. coli'' producer===
 +
 +
<div class="emph">
 +
 +
We also improved an existing BioBrick, Glasgow 2014 team's BioBrick ([http://parts.igem.org/Part:BBa_K1463604 BBa K1463604]), making our brick ([http://parts.igem.org/Part:BBa_K1951008 BBa K1951008]). This BioBrick is an improvement of the orignial BioBrick in three ways:
 +
 +
* The codon usage has been optimized to ensure a strong expression in E.coli,
 +
* The RBS has no mutation so the flagellin is well expressed,
 +
* Our swimming test show that the swimming phenotype of the BioBick is improved thanks to our changes.
 +
 +
All the functional tests and experiments, show this part is functional, are listed [https://2016.igem.org/Team:Aix-Marseille/Composite_Part#BBa_K1951008_:_FliC_E._coli_producer here].
 +
 +
</div>
  
    </div>
+
====Part Composition:====
    <div class="col-md-5 col-md-offset-1  col-sm-offset-1  space30">
+
[[File:T--Aix-Marseille--fliC.png|400px|right]]
<br/><br/><br/><br/><br/>
+
This part is a composite part composed of 2 Biobricks :
                          <img src="https://static.igem.org/mediawiki/2015/6/60/Qsffff.png" class="img-responsive" width="475" height="325">
+
* [http://parts.igem.org/Part:BBa_K1951005 BBa_K1951005] : Flagellin C
                         
+
* [http://parts.igem.org/Part:BBa_K880005 BBa_K880005] : Strong promoter, strong RBS combination
  
   
+
====Flagellin C from ''Escherichia coli''====
    </div>
+
Flagellin C (FliC) protein from ''Escherichia coli'' strain is the main protein constitutive of the flagelar filament and is involved to promote bacterial swimming. This sequence is conserved in many bacterial strains. It has been demonstrated that flagellin has the ability to adsorb precious metal such as platinum or gold.
    </div>
+
We made a FliC mutant by transduction using phage P1 in a ''E. Coli'' W3110 strain. Then we have complemented the ''fliC'' mutant W3110 with [http://parts.igem.org/Part:BBa_K1951008 BBa_K1951008] and performed a swimming test for every background. The result has shown that swimming was recovered into the complemented ''fliC'' mutant W3110
            <div class="space30"></div>
+
    </div>
+
  
    </section>
+
====Flagellin C swimming test====
<section style="padding:30px 0px 50px;" class="arrow_box" id="team">
+
   
+
    <div class="container">
+
    <div class="row">
+
    <div class="col-md-6 left">
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    <div align="center"><h2 class="title wow bounce in up"><span style="color:#8E3B8C"><span style="font-family:Armalite Rifle">New biobricks using existing ones</div>
+
</h2></span></span>
+
    <div class="space30"></div>
+
    <p class="space20"><div align="justify"><span style ="font-family:Courier New">We use existing biobrick to create new biobricks we needed:<br/>
+
<ul>
+
    <li>Yeast signal CXXCH - Cytochrome C Synechocystis sp (BBa_S05316)</li>
+
    <li>Cytochrome C P.Denitrificans - His Tag (BBa_S05317)</li>
+
    <li>Yeast signal CXXCH - Cytochrome C S.oneidensiswithout stop codon (BBa_S05318)</li>
+
    <li>T7 promoteur,RBS - Cytochrome C S.oneidensis - HisTag (BBa_K1601016)</li>
+
</ul>
+
</div></p></span>
+
    </div>
+
    <div class="col-md-5 col-md-offset-1  col-sm-offset-1  space30">
+
<br/><br/><br/><br/><br/>
+
                          <img src="https://static.igem.org/mediawiki/2015/a/a7/Qsffqfqdf.png" class="img-responsive" width="475" height="325">
+
                         
+
  
   
+
We constructed a fliC deletion mutant that is unable to swim, from the wild-type strain W3110. The ability to swim was restored to this mutant by our biobrick, as can be seen in the illustration here. This demonstrated that the protein can be correctly inserted into flagella and functions.
    </div>
+
    </div>
+
            <div class="space30"></div>
+
    </div>
+
  
    </section>
+
[[File:T--Aix-Marseille--result3.jpeg|500px|center]]
    <div class="clearfix"></div>   
+
  
    </section>   
+
====Part Assembly:====
      <!-- start social section -->
+
The subparts were assembled using standard BioBrick Assembly.
    <section style="padding:30px 0px;" class="arrow_box" id="ethics">
+
   
+
    <div class="container">
+
    <div class="row">
+
    <div class="col-md-12 text-center">
+
<h1 class="blue"><div align ="center">MORE INFORMATION ON FACEBOOK !</div></h1>
+
                    <ul class="list-inline space80 icon">
+
                        <li><div align ="center"><a href="https://www.facebook.com/iGEM.AMU?fref=ts"><img src="https://static.igem.org/mediawiki/2015/e/ed/FacebookAMU.png" width="200" height="200"" class="img-grey mautomargin"></a></li></div>
+
                    </ul>
+
  
                </div>
+
===[http://parts.igem.org/Part:BBa_K1951009 BBa_K1941009] : FliC <i> ''Desulfovibrio vulgaris'' </i> producer===
    </div>
+
    </div>
+
  
    </section>
+
====General====
      <div class="clearfix"></div>
+
Flagellin (FliC) protein from <i>Desulfovibrio vulgaris</i> strain is the main protein constitutive of the flagellum filament and is involved in bacterial swimming. This protein is conserved in many bacterial strains as the capacity of swimming given by the flagellum confers a great selective advantage.
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+
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+
  <li><a href="http://www.cnrs.fr/">
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    <img src="https://static.igem.org/mediawiki/2015/8/8e/CNRSlogo.jpg"
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  <li><a href="http://www.univ-amu.fr/">
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  <li><a href="http://www3.gehealthcare.fr/">
+
    <img src="https://static.igem.org/mediawiki/2015/b/bd/GEHlogo.jpg" width="200"
+
    class="img-grey mautomargin" align="center" ></a></li>
+
  <li><a href="https://www.sigmaaldrich.com/france.html">
+
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+
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+
  <li><a href="http://www.starlab.de/int/?l=5">
+
    <img src="https://static.igem.org/mediawiki/2015/1/13/StarLablogo.jpg" align="center"
+
    class="img-grey mautomargin" width="200" height="100"></a></li>
+
  <li><a href="http://fr.ambafrance-us.org/">
+
    <img src="https://static.igem.org/mediawiki/2015/2/2b/M3ieC2R.jpg" align="center"
+
    class="img-grey mautomargin" width="200" height="100"></a></li>
+
  <li><a href="https://www.neb.com/">
+
    <img src="https://static.igem.org/mediawiki/2015/a/a9/Ll3uagr.jpg" align="center"
+
    class="img-grey mautomargin" width="200"></a></li>
+
  <li><a href="http://sciences.univ-amu.fr/">
+
    <img src="https://static.igem.org/mediawiki/2015/4/4a/FtFgEFj.jpg" align="center"
+
    class="img-grey mautomargin" width="200"></a></li>
+
  <li><a href="https://eu.idtdna.com/site">
+
    <img src="https://static.igem.org/mediawiki/2015/d/d9/IDTlogo.jpg" align="center"
+
    class="img-grey mautomargin" width="200"></a></li>
+
</ul>
+
  
                 
+
[[File:T--Aix-Marseille--biosorption.jpeg|350px|right|]]
                </div>
+
  
            </div>
+
====Metal Biosorption Capacity====  
              <div class="space20"></div>
+
It has been demonstrated that Flagellin has the ability to adsorb precious metal on its surface such as platinum, palladium gold <ref>Deplanche & al., 2007 http://onlinelibrary.wiley.com/doi/10.1002/bit.21688/abstract. </ref><ref>Capeness & al. 2015, http://eprints.nottingham.ac.uk/27979/1/Michael%20Capeness%20-%20Thesis%20-%20PDF.pdf</ref> and this was important for our project [https://2016.igem.org/Team:Aix-Marseille/Design#Biosorption_and_reduction_using_flagellin_and_peptides Highway to platinum]
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                        <p class="fsize18 space10">Chew figth project, for the iGEM competition. See you soon in Boston !</p>
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        </div>
+
==== Immune response capacity ====
  
 +
The propensity of the immune response to flagellin may be explained by two facts:
 +
* Flagellin is an extremely abundant protein in flagellated bacteria.
 +
* There exists a specific innate immune receptor that recognizes flagellin, Toll-like receptor 5 (TLR5). <ref> Kathrani A. & al, 2012 http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0030117) </ref>
  
    </footer>
+
===[http://parts.igem.org/Part:BBa_K1941010 BBa_K1941010] : CsgA <i> ''Escherichia coli'' </i> producer===
  
    <script type="text/javascript">
+
CsgA is the major structural subunit of the curli fimbriae.  Curli fibers are involved in adhesion to surfaces, cell aggregation, and biofilm formation<ref name="Curli">[https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2838481/ Michelle M. Barnhart and Matthew R. Chapman 2010, Annual Review of Microbiology]</ref>. Curli also mediate host cell adhesion and invasion, and they are potent inducers of the host inflammatory response. The biobrick contains a strong promotor.
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Latest revision as of 01:56, 20 October 2016