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| <div> | | <div> |
| <div class="box-dark"> | | <div class="box-dark"> |
− | <h1 class="heading">
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− | M E A S U R E M E N T | + | <h1 class="heading" style=" |
| + | line-height: 1; |
| + | "> |
| + | |
| + | G I A N T<br> J A M B O R E E |
| </h1> | | </h1> |
| <hr class="line"> | | <hr class="line"> |
− | <img src="https://static.igem.org/mediawiki/2019/a/ac/T--Marburg--logo.svg" | + | <img src="https://static.igem.org/mediawiki/2019/a/ac/T--Marburg--logo.svg" class="logo" alt="Syntex Logo"> |
− | class="logo"
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− | alt="Syntex Logo">
| + | |
| </div> | | </div> |
| <div style="margin-top: 10vh;"> | | <div style="margin-top: 10vh;"> |
| <section class="section"> | | <section class="section"> |
− | <h1 class="title">Amplifying new standards in measurement</h1>
| + | <div style="display: flex; flex-direction: row;"> |
− | <p style="text-align: justify;"> | + | |
− | Vielleicht noch ein allgemeinem abstract zu Messung (vergleiche andere WIKIS) | + | <p style="margin-bottom: 1em;"> |
| + | Traditionally, we presented our project at the Giant Jamboree in Boston. It was a lot of fun to meet all the other iGEM teams and to talk and discuss with like-minded people. We loved watching the other team's presentations and listening to their detailed explanations at their posters. Thereby, we realised once again how broad the field of Synthetic Biology is and how big of an impact this field already is and how it will be even bigger in the future. With our presentation, poster and a booth at the Exhibition Space we showed what we were able to achieve in the last year. |
| + | |
| + | </p> |
| + | |
| + | <figure style="text-align: center; margin-left: 25px; max-width: 42000px"> |
| + | <img src="https://static.igem.org/mediawiki/2019/5/53/T--Marburg--GiantJamboree_2019_Grouppicture.jpg" |
| + | alt="Our team at the Giant Jamboree"> |
| + | <figcaption style="text-align: center;"> |
| + | Our team at the Giant Jamboree |
| + | </figcaption> |
| + | </figure> |
| + | |
| + | </div> |
| + | |
| + | |
| + | |
| + | |
| + | <p style="margin-bottom: 1em;"> |
| + | <br> <br> Our presentation was one of the first on the first day. The room was so crowded, people were even standing in the doorway to watch our presentation! Here you have the possibility to see the presentation of our team at the Giant Jamboree. |
| + | </p> |
| + | <div style=" |
| + | position: relative; |
| + | height: 0; |
| + | width: 100%; |
| + | padding-bottom: 56.25%; |
| + | "> |
| + | <iframe src="https://www.youtube.com/embed/CwasIzE0R8o" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen="" style="position: absolute;width: 100%;height: 100%;top: 0;left: 0;"></iframe> |
| + | </div> |
| + | |
| + | <br> |
| + | |
| + | |
| + | <br> |
| + | <p style="margin-bottom: 1em;"> |
| + | <br> Afterwards, most of the time we had to stay with three or more people near our |
| + | <a style="padding: 0" href="https://static.igem.org/mediawiki/2019/2/2a/T--Marburg--Poster_2019_Marburg.pdf" target="_blank">poster</a>, because so many people were interested in our project. |
| + | Additionally, Keoni Gandall and Kristin Ellis paid us a visit at our Exhibition Space booth. They were really impressed by our custom-made hardware. |
| + | </p> |
| + | <figure style="float:right; margin-left: 25px; text-align: center;"> |
| + | <img style="height: 500px; mix-blend-mode: multiply;" src="https://static.igem.org/mediawiki/2019/9/93/T--Marburg--OpentronsVisitinNY_Grouppicture.jpg" |
| + | alt="Our team at the roof of the Opentrons building, during our visit in New York City"> |
| + | <figcaption style="text-align: center;"> |
| + | Our team at the roof of the Opentrons building, during our visit in New York City |
| + | </figcaption> |
| + | </figure> |
| + | <p style="margin-bottom: 1em;"> |
| + | Kristin was so happy about our work on the OT-2 Colony Picker Unit that she invited us to their company headquarters in New York City! When we went to Opentrons in New York City Kristin showed us their offices and labs, explained us how they work at Opentrons and we presented our Colony Picker Unit to several staff members, sharing our thoughts and ideas. |
| + | </p> |
| + | |
| + | |
| + | |
| + | <p style="margin-bottom: 1em;"> |
| + | Working independently and in collaborations on our own project, joining the Giant Jamboree together as a team and getting in touch with all these different, amazing people meant a lot to us and we are really thankful to have made these experiences! Finally we want to thank everybody who helped us gain a silver medal in this awesome competition! We are happy for this amazing time and to be a part of this great community! |
| </p> | | </p> |
| + | |
| + | <br><br><br> |
| + | |
| + | |
| + | |
| + | |
| + | <figure style="float:right; margin-left: 25px; text-align: center;"> |
| + | <img style="height: 500px; mix-blend-mode: multiply;" src="https://static.igem.org/mediawiki/2019/7/7d/T--Marburg--Metabolic--MEP-pathway.png" |
| + | alt="Metabolic MEP Pathway"> |
| + | <figcaption style="text-align: center;"> |
| + | Fig. 1- Overview of the MEP-Pathway.<br> |
| + | Enzymes are marked blue and Green.<br> |
| + | Limonene and farnesene Synthase are summarised as TPS.<br> |
| + | Modified after Lin et al 2016 |
| + | </figcaption> |
| + | </figure> |
| + | <p style="margin-bottom: 1em;"> |
| + | Farnesene and limonene are both terpenoids, deriving from the so called 2-C-methyl-D-erythritol 4-phosphate (MEP) pathway (figure 3). |
| + | The MEP pathway is a conserved pathway in bacteria and in photrophic organisms, it uses C3-bodies deriving from the Calvin-Cycle (directly |
| + | as glyceraldehyde 3-phosphate and indirectly as pyruvate) as substrate. The resulting C5-bodiess, isopentenyl pyrophosphate (IPP) and it´s |
| + | isomere dimethylallyl pyrophosphate (DAMPP) is used to build longer geranyl pyrophosphate (GPP) and Farnesyl pyrophosphate (FPP). GPP serves |
| + | as the basis for a heterologous expressed limonene synthase to form D-Limonene, whereas FPP is a substrate for the plant derived Farnesene |
| + | synthase. |
| + | Because isoprenoids are interesting platform chemicals for various products, a lot of effort has been done to improve this pathway in |
| + | cyanobacteria (<a style="padding: 0" href="https://link.springer.com/article/10.1007/s00425-018-3047-y" target="_blank">Lin<i> et al.</i>, |
| + | 2016</a>). |
| + | </p> |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | |
| + | <figure style="float:right; margin-left: 25px; text-align: center;"> |
| + | <img style="height: 500px; mix-blend-mode: multiply;" src="https://static.igem.org/mediawiki/2019/9/93/T--Marburg--OpentronsVisitinNY_Grouppicture.jpg" |
| + | alt="Our team at the roof of the Opentrons building, during our visit in New York City"> |
| + | <figcaption style="text-align: center;"> |
| + | Our team at the roof of the Opentrons building, during our visit in New York City |
| + | </figcaption> |
| + | </figure> |
| + | <p style="margin-bottom: 1em;"> |
| + | |
| + | <p style="margin-bottom: 1em;"> |
| + | Traditionally, we presented our project at the Giant Jamboree in Boston. It was a lot of fun to meet all the other iGEM teams and to talk and discuss with like-minded people. With our presentation, poster and a booth at the Exhibition Space we showed what we were able to achieve in the last year. |
| + | |
| + | </p> |
| + | |
| + | |
| + | |
| + | |
| </section> | | </section> |
| <section class="section"> | | <section class="section"> |
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| microbiology and necessary to compare results with other scientists and reproduce their data. | | microbiology and necessary to compare results with other scientists and reproduce their data. |
| </p> | | </p> |
| + | <figure style="float:right; margin-left: 25px;"> |
| + | <img style="height: 719px; width: 1001px;" src="https://2019.igem.org/File:T--Marburg--Metabolic--MEP-pathway.png" alt="asas"> |
| + | <figcaption style="max-width: 550px; text-align: center"> |
| + | Fig.1 - Comparison of NanoLuc and teLuc Luminescence Spectra in comparison with Synechococcus elongatus |
| + | UTEX |
| + | 2973 Absorption spectra. |
| + | </figcaption> |
| + | </figure> |
| <p style="text-align: justify; margin-bottom: 1em;"> | | <p style="text-align: justify; margin-bottom: 1em;"> |
| While we wanted to establish Syn. elong. as a new chassis for the iGEM community and scientists we wanted to | | While we wanted to establish Syn. elong. as a new chassis for the iGEM community and scientists we wanted to |
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| </article> | | </article> |
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| + | M E A S U R E M E N T |
− | <span>Light measurement</span>
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| Abstract? | | Abstract? |
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| Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. | | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
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− | <article class="media"> | + | <h1> |
− | <div class="media-content"> | + | P A R T<br> |
− | <div class="content"> | + | M E A S U R E M E N T |
− | <h2>Part Measurement</h2>
| + | </h1> |
− | <p>
| + | <hr> |
− | For our project it was indispensable to establish a measurement workflow that is not only applicable
| + | </div> |
− | to UTEX 2973 and other cyanobacteria but also has a high throughput.
| + | <div class="sub-content"> |
− | </p>
| + | <div> |
− | </div>
| + | For our project it was indispensable to establish a measurement workflow that is not only applicable |
| + | to UTEX 2973 and other cyanobacteria but also has a high throughput. |
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| For our project it was indispensable to establish a measurement workflow that is not only applicable | | For our project it was indispensable to establish a measurement workflow that is not only applicable |
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| Experimental Procedure | | Experimental Procedure |
| </h3> | | </h3> |
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| The results of our part characterization were obtained by fluorescence and luminescence | | The results of our part characterization were obtained by fluorescence and luminescence |
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| + | <h3 class="title" tyle="text-align: left; text-align-last: left;">Data analysis and evaluation |
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− | tyle="text-align: left; text-align-last: left;">Data analysis and evaluation
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| kein plan was man hier schreiben soll zum jetzigen standpunkt... | | kein plan was man hier schreiben soll zum jetzigen standpunkt... |
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| + | <div class="sub-header"> |
− | <article class="media"> | + | <h1> |
− | <div class="media-content"> | + | G R O W T H<br> |
− | <div class="content"> | + | C U R V E S |
− | <h2>Growth Curves</h2>
| + | </h1> |
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| + | <hr> |
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| Abstract? | | Abstract? |
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| <h3 class="title">Unterprojekt1</h3> | | <h3 class="title">Unterprojekt1</h3> |
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| Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. | | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
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| Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. | | Hier bitte den für diese Stelle zutreffenden Text einfügen, wenn dieser fertig ist. |
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| </div> | | </div> |
| + | <p> |
| + | One mayor criteria to evaluate a chassis is its potential for an application project. To showcase these potential applications, |
| + | our team decided to redirect the metabolic flux of Synechococcus elongatus UTEX 2973 in order to synthesize add-value compounds |
| + | with CO<sub>2</sub> and light as a resource. As a target, we thought about molecules, which also tackle one of the most important |
| + | topic: the climate change. |
| + | </p> |
| + | <br> |
| + | <p> |
| + | Planes are considered to be one of the most environmentally damaging transport devices commonly used (<a style="padding: 0" |
| + | href=" https://pubs.acs.org/doi/full/10.1021/es9039693" target="_blank">Borken-Kleefeld<i> et al.</i>, 2010</a>). A quick |
| + | estimation suggests, yet only for the Giant Jamboree in Boston 2018, 14.000.000 tons CO<sub>2</sub> was released from the flights. |
| + | To encounter this problem, we chose to set our focus on farnesene and limonene, which make up 90 % of the biojetfuel AMJ700t (50% |
| + | limonene, 40% farnesene) from Amyris (<a style="padding: 0" href=" https://aem.asm.org/content/aem/81/10/3316.full.pdf" |
| + | target="_blank">Brennan<i> et al.</i>, 2015</a>). This fuel has proven to be a suitable alternative to chemically produced, oil |
| + | based <a style="padding: 0" |
| + | href=" |
| + | https://investors.amyris.com/2012-06-19-Photo-Release-Azul-Brazilian-Airlines-Makes-Successful-Demonstration-Flight-With-Amyris-Renewable-Jet-Fuel-Produced-From-Sugarcane" |
| + | target="_blank">jet fuels</a> |
| + | </p> |
| + | <br> |
| + | |
| + | <figure style="float:right; margin-left: 25px;"> |
| + | <img style="height: 500px; width: 750px;" src="https://2019.igem.org/File:T--Marburg--Metabolic--MEP-pathway.png" |
| + | alt="Metabolic MEP Pathway"> |
| + | <figcaption style="max-width: 550px; text-align: center"> |
| + | Fig. 1- Overview of the MEP-Pathway. Enzymes are marked blue and Green. Limonene and farnesene Synthase are summarised as TPS. |
| + | Modified after Lin et al 2016 |
| + | </figcaption> |
| + | </figure> |
| + | |
| + | <p> |
| + | Farnesene and limonene are both terpenoids, deriving from the so called 2-C-methyl-D-erythritol 4-phosphate (MEP) pathway (figure |
| + | 3). |
| + | |
| + | The MEP pathway is a conserved pathway in bacteria and in photrophic organisms, it uses C3-bodies deriving from the Calvin-Cycle |
| + | (directly as glyceraldehyde 3-phosphate and indirectly as pyruvate) as substrate. The resulting C5-bodiess, isopentenyl |
| + | pyrophosphate (IPP) and it´s isomere dimethylallyl pyrophosphate (DAMPP) is used to build longer geranyl pyrophosphate (GPP) and |
| + | Farnesyl pyrophosphate (FPP). GPP serves as the basis for a heterologous expressed limonene synthase to form D-Limonene, whereas |
| + | FPP is a substrate for the plant derived Farnesene synthase. |
| + | Because isoprenoids are interesting platform chemicals for various products, a lot of effort has been done to improve this pathway |
| + | in cyanobacteria (<a style="padding: 0" href=" https://link.springer.com/article/10.1007/s00425-018-3047-y" target="_blank">Lin<i> |
| + | et al.</i>, 2016</a>). |
| + | </p> |
| + | <br> |
| + | <p> |
| + | As a the first step we decided to heterologous express the limonene and the farnesene synthase to establish overexpression |
| + | strains. We used the limonene synthase from <i>Lavandula angustifolia</i> and the Farnesen synthase from <i>Actinidia |
| + | deliciosa</i> and codon optimised both enzymes. |
| + | To redirect the flux into the MEP-Pathway we decided to overexpress the <i>E.Coli</i> proteins DXS, IDI and IspA. These targets |
| + | were chosen on based previous results, which showed enhancement the production of amorpha-4,11-diene to 19.8 mg/L in PCC 7942 |
| + | without significant impairing the growth rate (<a style="padding: 0" |
| + | href=" https://biotechnologyforbiofuels.biomedcentral.com/articles/10.1186/s13068-016-0617-8" target="_blank">Choi<i> et |
| + | al.</i>,2016</a>). |
| + | Surprisingly, this suggest strong capacities of production in Cyanobacteria. |
| + | </p> |
| + | <br> |
| + | <p> |
| + | We chose the DXS, as many pathways are regulated on the first committing step. The IDI, would convert DMAPP to IPP, which is |
| + | necessary to balance both pools, which is especially interesting for overproduction of Farnesene, where a ratio of 1:2 in favour |
| + | of IPP is required. </p> |
| + | <p> |
| + | |
| + | IspA can synthesise GPP and IPP to FPP, which would improve the efficiency in a farnesene production strain. |
| + | To further enhance the efficiency of this pathway, we decided to mutate the DXS-residue 392 from a thyrosine (Y) to a |
| + | phenylalanine (F). This would lead to a threefold increase in activity <i>in vitro</i> (<a style="padding: 0" |
| + | href=" http://www.jbc.org/content/282/4/2676.long" target="_blank">Xiang<i> et al.</i>, 2016</a>). |
| + | Also it would be advisable to remove the allosteric feedback regulation of the DXS (<a style="padding: 0" |
| + | href=" https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0161534” target=" _blank">Banerjee<i> et |
| + | al.</i>,2016</a>). |
| + | </p> |
| + | <p> |
| + | Removal of the end product is a key component in overproduction strains. Because farnesene and limonene are volatile, the |
| + | extracellular diffusion rate is enough to prevent intracellular and potential toxic accumulation. On the other hand, a nontoxic |
| + | overlay to catch the molecules is required, for example dodecan can be used. (<a style="padding: 0" |
| + | href=" https://pubs.acs.org/doi/10.1021/acs.jafc.7b03625" target="_blank">Lee<i> et al.</i>, 2017</a>). An alternative supply |
| + | with CO2 is also required, therefore we copied the system from Lee <i>et al. </i> and introduced a small tube with holes into the |
| + | Medium. |
| + | </p> |
| + | <p> |
| + | |
| + | To balance the pathway we decided to use a weak promotor (<a style="padding: 0" href="http://parts.igem.org/Part:BBa_J23103" |
| + | target="_blank">BBa_J23103</a>) for the ispA, as competition over FPP could lead to a heavy growth impact (<a style="padding: 0" |
| + | href=" https://link.springer.com/article/10.1007/s00425-018-3047-y" target="_blank">Lin<i> et al.</i>, 2016</a>). |
| + | As IDI is an Isomerase, only a comparably small amount of protein should be sufficient for a enhanced effect, so Promotor <a |
| + | style="padding: 0" href="http://parts.igem.org/Part:BBa_J23110" target="_blank">BBa_J23110</a> was chosen. Because the DXS is |
| + | the a potential bottle neck in Terpene Production, we chose the Promotor <a style="padding: 0" |
| + | href="http://parts.igem.org/Part:BBa_J23111" target="_blank">BBa_J23111</a>. |
| + | </p> |
| + | <p> |
| + | Sadly, we weren´t able to test our constructs <i>in vivo</i> and dropped this side project due to time reasons. As of now the |
| + | submitted Parts for the limonene and the Farnesene synthase, which have been codon optimised for UTEX 2973 have been added to the |
| + | registry ( <a style="padding: 0" href=" http://parts.igem.org/Part:BBa_K3228051" target="_blank"> K3228051</a> and <a |
| + | style="padding: 0" href=" http://parts.igem.org/Part:BBa_K3228052" target="_blank"> K3228052</a>). |
| + | |
| + | </p> |
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