Team:Peking

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<h1 id="ProjectName">AROMATICS BUSTED</h1>
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                 <h1 id="ProjectSubname">A FAST, EASY AND ACCURATE METHOD TO DETECT TOXIC AROMATIC COMPOUNDS</h1>
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<h1 id="ProjectName">Aromatics Scouts<img id="LittleScout" src="https://static.igem.org/mediawiki/igem.org/8/8a/Peking2013_home_Telescope.png" /></h1>
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                 <h1 id="ProjectSubname">A Comprehensive Biosensor Toolkit for Profiling Aromatic Compounds in the Environment</h1>
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<B>★Presentation:</B> Room 34-101, Saturday 12:30 PM, Session 2
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      &ensp;&ensp;&ensp;&ensp;<B>★Poster:</B> Sunday, #13 (Stata)
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            <p id="AbstractContent">As aromatic pollution levels rise, and along with it the environmental and health hazards that it presents, finding a better way of detecting these aromatic compounds becomes more and more important. Some prokaryotes, including <I>Escherichia coli</I> and <I>Pseudomonas putida</I>, naturally produce proteins capable of both detecting toxic aromatic molecules and regulating the transcription of corresponding catabolic genes. However, these naturally existing biosensors are limited by their detection range, expression leakage, and induction ratio.<br/><br/>Using these proteins, our team designed a series of improved aromatic sensors and combined them with related enzymes from their original catabolic pathways to increase the molecule detection range of these sensors. In order to semi-quantitatively measure the concentrations of target compounds, we constructed a biological band-pass circuit, enabling our sensors to detect the concentrations of target compounds within a certain range. In sum, we have been working on a fast, easy and accurate way to detect toxic aromatic compounds.</p>
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              <p id="AbstractContent">Monitoring aromatic compounds in the environment remains a substantial challenge today. Noting the power of biosensors for quick and convenient testing, Peking iGEM has developed a functionally comprehensive biosensor toolkit to profile aromatics in the environment.
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<br/><br/>
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Transcriptional regulators that each detect a specific class of aromatics were first bioinformatically determined; and then utilized to build a comprehensive set of biosensor circuits. Characterization on the detection profiles of individual biosensors and the orthogonality/crosstalk between them proved that these biosensors are very capable at profiling aromatics present in water.  
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<br/><br/>
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Moreover, for the ease of practical applications, two types of genetic devices were also developed as plug-ins for biosensors: "Adaptors", a set of conceptually novel devices to convert undetectable compounds into detectable compounds, and "Band-pass Filter", a "concentration filter" that allows the detection of analyte concentration within a specific range.  
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We expect that these novel biosensors, together with the plug-in devices, will serve as intriguing synthetic biological tools for diverse practical applications.
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              <h1 id="Appendix1Title"><i>Mining aromatics-sensing Biobricks <br/>from the genomic database</i></h1>
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                    <h1 class="AppendixHeadLine">Biosensor Mining</h1>
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                    <p>The core component of our biosensor toolkit is the transcriptional regulators that sense aromatics. For the comprehensiveness of aromatics-sensing, a data-mining process was conducted to mine transcriptional regulators for each typical class of aromatics from the database Uniprot. </p>
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                    <a href="https://2013.igem.org/Team:Peking/Project/SensorMining">LEARN MORE</a>
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              <h1 id="Appendix2Title"><i>High-performance, profile-<br/>specific biosensors</i> </h1>
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                    <img id="AppendixImg2" src="https://static.igem.org/mediawiki/igem.org/1/17/Peking2013_home_appendix2.jpg" />
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                    <h1 class="AppendixHeadLine">Biosensors</h1>
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                    <img id="Appendix2Icon" class="AppendixIcon"  src="https://static.igem.org/mediawiki/igem.org/b/b2/Peking2013_home_appendix2icon.png" />
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                    <p>A comprehensive set of biosensor circuits have been implemented using the aromatics-sensing transcriptional regulators. Each biosensor has a specific aromatics-sensing profile. Furthermore, the orthogonality of their sensing profiles was carefully assessed for practical applications.</p>
 +
                    <a href="https://2013.igem.org/Team:Peking/Project/BioSensors">LEARN MORE</a>
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              </div>
         </div>
         </div>
         <div id="AppendixBox3" class="SmallBoxes">
         <div id="AppendixBox3" class="SmallBoxes">
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              <h1 id="Appendix3Title"><i>Converting the undetectable into<br/>the detectable</i></h1>
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              <div id="Appendix3Cover" >
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                    <img id="AppendixImg3" src="https://static.igem.org/mediawiki/igem.org/1/1b/Peking2013_home_appendix3.jpg" />
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                    <h1 class="AppendixHeadLine">Adaptors</h1>
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                    <img id="Appendix3Icon"  class="AppendixIcon" src="https://static.igem.org/mediawiki/igem.org/c/cd/Peking2013_home_appendix3icon.png" />
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                    <p> To expand the detection profiles of some biosensors, aromatics-metabolizing enzymes were taken from natural metabolic pathways, working as Adaptors to convert undetectable chemicals into detectable aromatics when coupled with biosensor circuits.</p>
 +
                    <a href="https://2013.igem.org/Team:Peking/Project/Plugins">LEARN MORE</a>
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              </div>
         </div>
         </div>
         <div id="AppendixBox4" class="SmallBoxes">
         <div id="AppendixBox4" class="SmallBoxes">
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              <h1 id="Appendix4Title"><i>Rapidly determining <br/> the analyte concentration</i></h1>
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              <div id="Appendix4Cover" >
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                    <img id="AppendixImg4" src="https://static.igem.org/mediawiki/igem.org/e/e6/Peking2013_home_appendix4.jpg" />
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                    <h1 class="AppendixHeadLine">Band-pass Filter</h1>
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                    <img id="Appendix4Icon" class="AppendixIcon"  src="https://static.igem.org/mediawiki/igem.org/4/42/Peking2013_home_appendix4icon.png" />
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                    <p>For the ease of practical analysis, a genetic device called "Band-pass Filter" has been constructed to allow the detection of analyte concentration within a specific range. Biosensors equipped with the Band-pass Filter can robustly quantify the aromatics in environmental samples. </p>
 +
                    <a href="https://2013.igem.org/Team:Peking/Project/BandpassFilter">LEARN MORE</a>
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              </div>
         </div>
         </div>
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         <div id="AppendixBox5" class="SmallBoxes">
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              <h1 id="Appendix5Title"><i>Communications, Questionnaire survey,  <br/>Factory Visit</i> and interview</h1>
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                    <img id="AppendixImg5" src="https://static.igem.org/mediawiki/igem.org/d/da/Peking2013_home_appendix5.jpg" />
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                    <h1 class="AppendixHeadLine">Human Practice</h1>
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                    <img id="Appendix5Icon" class="AppendixIcon"  src="https://static.igem.org/mediawiki/igem.org/8/85/Peking2013_home_appendix5icon.png" />
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                    <p>To obtain the information about public awareness and the situation of aromatics pollution, a survey including factory visit and questionnaires has been conducted. We also guided an iGEM HS team and held "Model iGEM" as a competition without competitiveness.</p>
 +
                    <a href="https://2013.igem.org/Team:Peking/HumanPractice">LEARN MORE</a>
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Latest revision as of 18:10, 28 October 2013

Aromatics Scouts

A Comprehensive Biosensor Toolkit for Profiling Aromatic Compounds in the Environment

★Presentation: Room 34-101, Saturday 12:30 PM, Session 2     ★Poster: Sunday, #13 (Stata)

Monitoring aromatic compounds in the environment remains a substantial challenge today. Noting the power of biosensors for quick and convenient testing, Peking iGEM has developed a functionally comprehensive biosensor toolkit to profile aromatics in the environment.

Transcriptional regulators that each detect a specific class of aromatics were first bioinformatically determined; and then utilized to build a comprehensive set of biosensor circuits. Characterization on the detection profiles of individual biosensors and the orthogonality/crosstalk between them proved that these biosensors are very capable at profiling aromatics present in water.

Moreover, for the ease of practical applications, two types of genetic devices were also developed as plug-ins for biosensors: "Adaptors", a set of conceptually novel devices to convert undetectable compounds into detectable compounds, and "Band-pass Filter", a "concentration filter" that allows the detection of analyte concentration within a specific range.

We expect that these novel biosensors, together with the plug-in devices, will serve as intriguing synthetic biological tools for diverse practical applications.

Mining aromatics-sensing Biobricks
from the genomic database

Biosensor Mining

The core component of our biosensor toolkit is the transcriptional regulators that sense aromatics. For the comprehensiveness of aromatics-sensing, a data-mining process was conducted to mine transcriptional regulators for each typical class of aromatics from the database Uniprot.

LEARN MORE

High-performance, profile-
specific biosensors

Biosensors

A comprehensive set of biosensor circuits have been implemented using the aromatics-sensing transcriptional regulators. Each biosensor has a specific aromatics-sensing profile. Furthermore, the orthogonality of their sensing profiles was carefully assessed for practical applications.

LEARN MORE

Converting the undetectable into
the detectable

Adaptors

To expand the detection profiles of some biosensors, aromatics-metabolizing enzymes were taken from natural metabolic pathways, working as Adaptors to convert undetectable chemicals into detectable aromatics when coupled with biosensor circuits.

LEARN MORE

Rapidly determining
the analyte concentration

Band-pass Filter

For the ease of practical analysis, a genetic device called "Band-pass Filter" has been constructed to allow the detection of analyte concentration within a specific range. Biosensors equipped with the Band-pass Filter can robustly quantify the aromatics in environmental samples.

LEARN MORE

Communications, Questionnaire survey,
Factory Visit and interview

Human Practice

To obtain the information about public awareness and the situation of aromatics pollution, a survey including factory visit and questionnaires has been conducted. We also guided an iGEM HS team and held "Model iGEM" as a competition without competitiveness.

LEARN MORE

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