Team:SJTU-BioX-Shanghai

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You are provided with this team page template with which to start the iGEM season.  You may choose to personalize it to fit your team but keep the same "look." Or you may choose to take your team wiki to a different level and design your own wiki.  You can find some examples <a href="https://2009.igem.org/Help:Template/Examples">HERE</a>.
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<li class="current"><a href="/Team:SJTU-BioX-Shanghai" class="selected">Home</a></li>
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<li><a href="/Team:SJTU-BioX-Shanghai/Project">Project</a></li>
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<li><a href="/Team:SJTU-BioX-Shanghai/Parts">Parts</a></li>
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<li><a href="/Team:SJTU-BioX-Shanghai/Team">Team</a></li>
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<li><a href="/Team:SJTU-BioX-Shanghai/Notebook/protocol">Notebook</a></li>
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<li><a href="/Team:SJTU-BioX-Shanghai/Consideration/human">Human Practice</a></li>
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<li><a href="/Team:SJTU-BioX-Shanghai/Consideration/safety">Consideration</a></li>
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<p>This year, SJTU-BioX-Shanghai iGEM team has build a "factory" on E.coli's membrane, where enzyme assemblies can be manipulated so that biochemical reactions can be accelerated and further controlled. </p>
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<p>We aimed at constructing a set of protein assemblies on E.coli inner membrane as scaffold carrying various enzymes. Distinct from previous synthetic scaffold system, our device limits the reaction space to a two-dimensional surface. In such system, the membrane functions as an extensive scaffold for proteins to anchor without limitation of scaffold amount. Membrane as scaffold also has privilege in receiving external and internal regulating signals. Based on Membrane Scaffold, we built two universal devices: Membrane Accelerator and Membrane Rudder.</p>
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<p>In Membrane Accelerator device, by gathering enzymes on membrane, production of fatty acid was enhanced by more than 24 fold, which has a promising application prospect in biofuel production. We also proposed a new direction for application of scaffold-based accelerator: Biodegradation. </p>
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<p>In Membrane Rudder device, we changed the direction of Violacein synthetic pathway through external signal. </p>
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<a href="/Team:SJTU-BioX-Shanghai/Project/project2.2"><div id="entry-cover1">
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<p>Membrane Accelerator could help substrates flow by decreasing distance that intermediates have to travel between enzymes. Besides, restricted reaction space on membrane could increase the local products concen- tration near membrane, thus to facilitate the exportation of final products  </p>
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                <p>We successfully increased the yield of fatty acids by 24 fold through building a fatty-acid-producing Mem- brane Accelerator.</p>
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<div class="main-entry" style="background-color:#4fb1ca; margin-right:26px;">
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<a href="/Team:SJTU-BioX-Shanghai/Project/project2.3"><div id="entry-cover2">
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<p>Previous synthetic scaffold con- trolling metabolic flux all focused on biosynthesis. Now we propose a new direction in the application of syn- thetic scaffold: accelerating biodegradation pathways.  </p>
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                <p>Natural biodegradation is a very slow process but indispensible in environment restoration. Membrane Accelerator is expected to increase rate of biodegrada- tion pathway sharply due to its multiple privileges.</p>
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<a href="/Team:SJTU-BioX-Shanghai/Project/project2.1"><div id="entry-cover3">
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<p>Dynamically and artificially regulating the direction of biochemical pathway has remained a challenge to all. Based on Membrane Scaffold, we achieved this goal through controlling aggregation state of crucial enzymes in branched reactions with light. This novel device is called Membrane Rudder.</p>
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                <p>We then further connected the post-translational control system (Membrane Rudder) to genetic circuits and expanded its potential signal pool.</p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> The honors we have won:</font></strong>  Regional Winner, Best New BioBrick Part or Device Engineered and Gold Medal at Asia Jamboree; Advanced to World Championship.</p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> The breakthrough we made:</font></strong> Redefinition of scaffold in Synthetic Biology by recruiting <i>E.coli’</i>s inner membrane as a natural two-dimensional scaffold. </p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> The system we built:</font></strong> 6 membrane proteins orderly organized on the inner membrane of <i>E.coli</i>, the feasibility of which has been confirmed by fluorescence complementation assay and biosynthesis experiment.</p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> Device 1 we created – Membrane Accelerator:</font></strong> A universal tool that serves to accelerate biochemical reactions in <i>E.coli</i>; Rate of fatty acids synthesis was increased by 24 fold compared to wild-type <i>E.coli </i>and 9 fold compared to <i>E.coli</i> overexpressing cytoplasmic enzymes.</p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> Device 2 we created – Membrane Rudder:</font></strong> A universal tool used to dynamically and artificially control biochemical reactions in <i>E.coli</i>; the direction of Violacein and Deoxyviolacein synthetic pathway was successfully switched through changing blue light signal. </p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> New direction we proposed:</font></strong> The application of scaffold system in accelerating biodegradation pathway by using Membrane Accelerator.</p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> Parts we submitted:</font></strong> 42 well-characterized parts that could either be used directly or serve as a universal tool readily for potential scientific or engineering use.</p>
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<p><strong><img src="/wiki/images/7/73/12SJTU_r.png"><font face="Cambria, serif " size="4"> A club we established – BioCraft:</font></strong> The headquarter of our human practice programs, having come a long way in propagandizing Synthetic Biology and iGEM. Warmly-received activities have been held in and outside the campus. Several celebrities in different fields have shown support for us, laying a cornerstone for our future development.</p>
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== Background of Our Team ==
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<a href="http://www.sjtu.edu.cn/">
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<img src="/wiki/images/6/6f/12SJTU_SJTU.jpg" style="width: 140px;">
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<a href="http://www.lib.sjtu.edu.cn/">
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<img src="/wiki/images/e/ee/12SJTU_lib.jpg" style="width: 140px;">
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<a href="http://www.bio-x.cn">
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<img src="/wiki/images/1/1a/12SJTU_biox.png" style="width: 140px;">
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<a href="http://life.sjtu.edu.cn/">
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<a href="http://www.huaqiaofoundation.org/">
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Our team consists of 11 members, who are all junior students of Shanghai Jiao Tong University.  
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Most of us came from School of Life Science and Biotechnology.  
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We are working, living and studying like a whole family.
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<a href="http://www.lifetechnologies.com">
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<img src="/wiki/images/d/de/12SJTU_Life_Technology.jpg" style="width: 140px;">
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<a href="http://www.genscript.com/">
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<img src="/wiki/images/5/55/12SJTU_genscript_logo.jpg" style="width: 140px;">
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</a></td>
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<td>
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<a href="http://www.dnbios.com/">
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<img src="/wiki/images/a/af/12SJTU_DNBIO.jpg" style="width: 140px;">
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</a></td>
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<td>
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<a href="">
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<img src="/wiki/images/5/55/12SJTU_shenglianshengwu.jpg" style="width: 140px;">
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</a></td>
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<a href="">
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<img src="/wiki/images/f/f0/12SJTU_SHIYI.jpg" style="width: 140px;">
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<a class="backtotop" href="#top" onclick="window.scrollTo(0,0);return false;">To Top
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|[[Image:SJTU-BioX-Shanghai_logo.png|200px|right|frame]]
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== Description of Our Project ==
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<div align="center" id="footer"> (c)  <a href="" target="_self">SJTU_BioX_iGEM2012</a> Powered by huanan1991</div>
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'''Membrane Workshop'''
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'''Motivation:'''
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1. There lacks compartment in prokaryotic cells, and thus engineered enzymes diffuse in the cytoplasm, which makes certain reactions proceed at a very low speed.
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2. Divergent biochemical pathways commonly exist in all types of organisms, but it is extremely hard to artificially control and switch the directions of these reactions.
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'''What to do:'''
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We aim to attach enzymes involved in certain reactions to membrane proteins in order to fulfill goals stated below:
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1. To accelerate reactions in certain biochemical pathway
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2. To switch the biochemical pathway from one to the other through extracellular signal control
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Our ultimate goal is to design a universal tool which functions as “engine” and “switch”. We master the membrane of E.coli and change it into an efficient workshop, where biochemical reactions are highly driven and well controlled. The “membrane workshop” project will solve common problems existing in bioengineering, i.e. the speed limit rooted in compartment-lacking prokaryotic cells and the lack of control over branched reactions.
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|[[Image:SJTU-BioX-Shanghai_team.png|right|frame|Your team picture]]
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|align="center"|[[Team:SJTU-BioX-Shanghai | Team SJTU-BioX-Shanghai]]
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<!--- The Mission, Experiments --->
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{| style="color:#1b2c8a;background-color:#0c6;" cellpadding="3" cellspacing="1" border="1" bordercolor="#fff" width="62%" align="center"
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!align="center"|[[Team:SJTU-BioX-Shanghai|Home]]
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!align="center"|[[Team:SJTU-BioX-Shanghai/Team|Team]]
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!align="center"|[https://igem.org/Team.cgi?year=2012&team_name=SJTU-BioX-Shanghai Official Team Profile]
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!align="center"|[[Team:SJTU-BioX-Shanghai/Project|Project]]
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!align="center"|[[Team:SJTU-BioX-Shanghai/Parts|Parts Submitted to the Registry]]
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!align="center"|[[Team:SJTU-BioX-Shanghai/Modeling|Modeling]]
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!align="center"|[[Team:SJTU-BioX-Shanghai/Notebook|Notebook]]
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!align="center"|[[Team:SJTU-BioX-Shanghai/Safety|Safety]]
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!align="center"|[[Team:SJTU-BioX-Shanghai/Attributions|Attributions]]
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Latest revision as of 03:58, 27 October 2012

This year, SJTU-BioX-Shanghai iGEM team has build a "factory" on E.coli's membrane, where enzyme assemblies can be manipulated so that biochemical reactions can be accelerated and further controlled.

We aimed at constructing a set of protein assemblies on E.coli inner membrane as scaffold carrying various enzymes. Distinct from previous synthetic scaffold system, our device limits the reaction space to a two-dimensional surface. In such system, the membrane functions as an extensive scaffold for proteins to anchor without limitation of scaffold amount. Membrane as scaffold also has privilege in receiving external and internal regulating signals. Based on Membrane Scaffold, we built two universal devices: Membrane Accelerator and Membrane Rudder.

In Membrane Accelerator device, by gathering enzymes on membrane, production of fatty acid was enhanced by more than 24 fold, which has a promising application prospect in biofuel production. We also proposed a new direction for application of scaffold-based accelerator: Biodegradation.

In Membrane Rudder device, we changed the direction of Violacein synthetic pathway through external signal.

Membrane Accelerator could help substrates flow by decreasing distance that intermediates have to travel between enzymes. Besides, restricted reaction space on membrane could increase the local products concen- tration near membrane, thus to facilitate the exportation of final products

We successfully increased the yield of fatty acids by 24 fold through building a fatty-acid-producing Mem- brane Accelerator.

Previous synthetic scaffold con- trolling metabolic flux all focused on biosynthesis. Now we propose a new direction in the application of syn- thetic scaffold: accelerating biodegradation pathways.

Natural biodegradation is a very slow process but indispensible in environment restoration. Membrane Accelerator is expected to increase rate of biodegrada- tion pathway sharply due to its multiple privileges.

Dynamically and artificially regulating the direction of biochemical pathway has remained a challenge to all. Based on Membrane Scaffold, we achieved this goal through controlling aggregation state of crucial enzymes in branched reactions with light. This novel device is called Membrane Rudder.

We then further connected the post-translational control system (Membrane Rudder) to genetic circuits and expanded its potential signal pool.

The honors we have won: Regional Winner, Best New BioBrick Part or Device Engineered and Gold Medal at Asia Jamboree; Advanced to World Championship.

The breakthrough we made: Redefinition of scaffold in Synthetic Biology by recruiting E.coli’s inner membrane as a natural two-dimensional scaffold.

The system we built: 6 membrane proteins orderly organized on the inner membrane of E.coli, the feasibility of which has been confirmed by fluorescence complementation assay and biosynthesis experiment.

Device 1 we created – Membrane Accelerator: A universal tool that serves to accelerate biochemical reactions in E.coli; Rate of fatty acids synthesis was increased by 24 fold compared to wild-type E.coli and 9 fold compared to E.coli overexpressing cytoplasmic enzymes.

Device 2 we created – Membrane Rudder: A universal tool used to dynamically and artificially control biochemical reactions in E.coli; the direction of Violacein and Deoxyviolacein synthetic pathway was successfully switched through changing blue light signal.

New direction we proposed: The application of scaffold system in accelerating biodegradation pathway by using Membrane Accelerator.

Parts we submitted: 42 well-characterized parts that could either be used directly or serve as a universal tool readily for potential scientific or engineering use.

A club we established – BioCraft: The headquarter of our human practice programs, having come a long way in propagandizing Synthetic Biology and iGEM. Warmly-received activities have been held in and outside the campus. Several celebrities in different fields have shown support for us, laying a cornerstone for our future development.