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| − | <div class="big-head h1-my-responsive"> <img src="https://static.igem.org/mediawiki/2017/5/52/T--SJTU-BioX-Shanghai--quan.png" class="img-fluid">Basic Parts</div>
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| − | <div class="my-title h5-my-responsive">Introduction</div>
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| − | <p>This year, our team will choose to present STAR 3, another modified STAR (Small Transcriptional-Activating RNA) for the award of the basic part (<a target="_blank" href="http://parts.igem.org/wiki/index.php?title=Part:BBa_K2285020">BBa_K2285020</a>).
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| − | Our project was based on iGEM16_Imperial STAR system (to distinguish it from our work, we called it <strong>STAR 1 system</strong>), and we decided to build another STAR system (we called it <strong>STAR 3 system</strong>)
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| − | to achieve multiple responds to different conditions. To put it simply, two STAR systems together can control two genetic circuits. For more information about advantages of STAR and how it works, you can be refer to <a target="_blank"
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| − | href="https://2016.igem.org/Team:Imperial_College/Basic_Part">here</a> .</p>
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| − | <div class="figure-intro">
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| − | <img src="https://static.igem.org/mediawiki/2017/5/59/T--SJTU-BioX-Shanghai--17201.png" class="img-fluid">
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| − | <div class="figure-text"><strong>Figure 1. The STAR construct. </strong>In the absence of antisense, sense target RNA will form a stem-loop structure, functioning as a terminator and stop the following transcription. When antisense RNA, a mRNA fragment
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| − | which is the antisense of part of the target RNA, is transcribed, the terminator structure will be disrupted and switch on the inhibited transcription.</div>
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| − | </div>
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| − | <p class="my-title2">For convenience, we want to introduce some terms for later description:</p>
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| − | <p>In the original project of Imperial, the stem-loop structure, which could be seen as a terminator, on the upstream of functional genes is called STAR-Target and we would just name it <strong>Target</strong>. The DNA sequence that
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| − | transcribes STAR we rename it <strong>Antisense</strong>. When we say <strong>Target 1</strong> and <strong>Antisense 1</strong>, they refer to the terminator structure and its complementary sequence in Imperial’s project.
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| − | When we say <strong>Target 3</strong> and <strong>Antisense 3</strong>, they refer to the novel terminator structure and its complementary sequence we designed this year. Target 1 and Antisense 1 together constitute STAR 1
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| − | system and Target 3 and Antisense 3 constitute STAR 3 system.</p>
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| − | <p>Please visit our <a target="_blank" href="https://2017.igem.org/Team:SJTU-BioX-Shanghai/Design">Design page</a> to find more information about how we designed the STAR 3 system.</p>
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| − | <p>Alternatively check out Target 3 <a target="_blank" href="http://parts.igem.org/wiki/index.php?title=Part:BBa_K2285020">BBa_K2285020</a> webpage for characterization of the STARs (Both STAR 1 and STAR 3) system.</p>
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| − | <div class="my-title h5-my-responsive">Basic Parts we submitted</div>
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| − | <div class="figure-intro" style="margin-top: 0px;">
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| − | <table class="table table-res table-res2 table-hover" align="center">
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| − | <td>Part Number</td>
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| − | <td>Type</td>
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| − | <td>Description</td>
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| − | <td>Length (bp)</td>
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| − | </tr>
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| − | </thead>
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| − | <tbody>
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| − | <tr>
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| − | <td><a target="_blank" href="http://parts.igem.org/wiki/index.php?title=Part:BBa_K2285010">BBa_K2285010</a></td>
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| − | <td>RNA</td>
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| − | <td>Antisense3+t500</td>
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| − | <td>104</td>
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| − | </tr>
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| − | <tr>
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| − | <td><a target="_blank" href="http://parts.igem.org/wiki/index.php?title=Part:BBa_K2285020">BBa_K2285020</a></td>
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| − | <td>Regulatory</td>
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| − | <td>J23119+Target3</td>
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| − | <td>128</td>
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| − | </tr>
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| − | </tbody>
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| − | </table>
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| − | </div>
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| − | <div class="my-title h5-my-responsive">Reference</div>
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| − | <ol type="1" start="1">
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| − | <li>Chappell J, Takahashi MK, Lucks JB. 2015. Creating small transcription activating RNAs. Nat Chem Biol 11:214–220. </li>
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| − | <li>Meyer, S., Chappell, J., Sankar, S., Chew, R., and Lucks, J. B. (2016) Improving fold activation of small transcription activating RNAs (STARs) with rational RNA engineering strategies Biotechnol. Bioeng. 113, 216. </li>
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