Difference between revisions of "Team:SDU-CHINA/Team"

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#logo {
 
#logo {
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float: left;
+
  float: left;
−
position: relative;
+
  position: relative;
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margin-left:1%;
+
  margin-left:1%;
−
display: block !important;
+
  display: block !important;
 
}
 
}
 
#logo img {  width:150px;} /*???*/
 
#logo img {  width:150px;} /*???*/
−
table { margin: 0 auto; }
 
−
td { text-align: center }
 
  
 
#content{
 
#content{
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         height: 100%;
 
         height: 100%;
 
         border: 0px;
 
         border: 0px;
−
        position: absolute;
 
−
        top:18px;
 
 
}
 
}
  
−
#footer,#header {
+
#header {
 
     background: linear-gradient(to right, #005AB5, #007500);
 
     background: linear-gradient(to right, #005AB5, #007500);
 
     background: -webkit-linear-gradient(to right, #005AB5, #007500);
 
     background: -webkit-linear-gradient(to right, #005AB5, #007500);
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     float: left;
 
     float: left;
 
     width: 100%;
 
     width: 100%;
−
     padding: 2% 0%;
+
     padding: 23px 0%;
 
         margin: 0 0px !important;
 
         margin: 0 0px !important;
 
}
 
}
  
 +
#footer {
 +
    background: linear-gradient(to right, #005AB5, #007500);
 +
    background: -webkit-linear-gradient(to right, #005AB5, #007500);
 +
    background: -moz-linear-gradient(to right, #005AB5, #007500);
 +
    background: -o-linear-gradient(to right, #005AB5, #007500);
 +
    float: left;
 +
    width: 100%;
 +
    padding: 7px 0;
 +
        margin: 0 0px !important;
 +
}
 
#menu a { text-decoration: none; }
 
#menu a { text-decoration: none; }
 
#menu a:link, a:visited, a:active { color: white; }
 
#menu a:link, a:visited, a:active { color: white; }
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#menu ul li ul li { font-size: 10px;  padding: 5%; }
 
#menu ul li ul li { font-size: 10px;  padding: 5%; }
 
#menu li:hover ul, .menu li.over ul { display: block; }
 
#menu li:hover ul, .menu li.over ul { display: block; }
−
 
  
  
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#contact a:link, a:visited, a:active { color: white; }
 
#contact a:link, a:visited, a:active { color: white; }
 
#contact a:hover { color: #c1d9ff; }
 
#contact a:hover { color: #c1d9ff; }
−
 
−
 
  
  
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     line-height: 1.5;
 
     line-height: 1.5;
 
     clear: both;
 
     clear: both;
−
     padding: 0px 200px 10px 200px;
+
     padding: 0px 100px 10px 100px;
 
}
 
}
 
.p-top {
 
.p-top {
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     font-size: 18px !important;
 
     font-size: 18px !important;
 
     line-height: 1.5;
 
     line-height: 1.5;
−
     margin:5px 0px 20px 30px;
+
     margin-bottom: 20px;
 
}
 
}
 
h4 {
 
h4 {
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.some-padding {
 
.some-padding {
 
     padding-top: 20px;
 
     padding-top: 20px;
−
    width: 100%;
 
 
}
 
}
  
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     display: -o-inline-block;
 
     display: -o-inline-block;
 
     width: 700px;
 
     width: 700px;
−
    margin:5px 180px 40px 125px;;
 
 
}
 
}
 
h1{
 
h1{
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     margin: 0 auto;
 
     margin: 0 auto;
 
   }
 
   }
−
 
 
   #box img{
 
   #box img{
 
     width: 600px;
 
     width: 600px;
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   clear:both;
 
   clear:both;
 
   overflow: hidden;
 
   overflow: hidden;
−
   padding-top: 80px;
+
   padding-top: 95px;
 
   padding-bottom: 100px;
 
   padding-bottom: 100px;
 
   /*保证footer是相对于container位置绝对定位*/
 
   /*保证footer是相对于container位置绝对定位*/
 
     position:relative;  
 
     position:relative;  
−
     margin-bottom: -123px;  
+
     bottom: -123px;  
 
     width:100%;
 
     width:100%;
 
     min-height:100%;  
 
     min-height:100%;  
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}
 
}
  
−
.bio1, .bio2 {
+
.rili{
−
    width: 80%;
+
  padding: 70px 165px;
−
    margin: 0 auto 40px auto;
+
  margin: 0 100px;
 +
  position: relative;
 +
  background: url(https://static.igem.org/mediawiki/2018/0/0e/T--SDU-China--huabian.svg) no-repeat;
 +
  background-size:85% 85%;
 +
  -moz-background-size:100% 100%;
 +
  background-position:center center;
 
}
 
}
−
.bio1{
+
.calendar1, .calendar2{
−
float: left;
+
  margin: 10px 15px;
 +
  position: relative;
 +
  display: inline-block;
 +
  width: 100px;
 +
  height:120px;
 
}
 
}
−
.bio2{
+
 
−
float: right;
+
.calendar1 span, .calendar2 span{
 +
  filter:alpha(opacity=50);  
 +
  -moz-opacity:0.5; opacity:0.5;
 +
  background:#ffffff;
 +
  margin: 60px 24px;
 +
  height:25px;
 +
  position: absolute;
 +
  width: 50px;
 +
 
}
 
}
−
.biotext{
+
.calendar1 font{
−
width: 55%;
+
  position: absolute;
−
display:inline-block;
+
  font-weight: bold;
−
    display:-webkit-inline-block; /* Safari, Chrome, and Opera */
+
  text-align: center;
−
    display: -moz-inline-block;/* Firefox */
+
  margin: 38px 22px;
−
    display: -o-inline-block;
+
  font-size: 23px;
 +
  font-family: cursive;
 +
 
 
}
 
}
−
.biopic{
+
.calendar2 font{
−
border: none;
+
  position: absolute;
−
display:inline-block;
+
  font-weight: bold;
−
    display:-webkit-inline-block; /* Safari, Chrome, and Opera */
+
  text-align: center;
−
    display: -moz-inline-block;/* Firefox */
+
  margin: 38px 14px;
−
    display: -o-inline-block;
+
  font-size: 23px;
−
    padding-right: 5%;
+
  font-family: cursive;
−
    vertical-align: top;
+
 
−
    width: 450px;
+
−
    height: 320px;
+
 
}
 
}
−
.name {
+
.paragraphs{  
−
    border-bottom: 1px solid #606060;
+
  padding: 0% 8%;  
−
    margin: 0 0 10px 0;
+
  font-family: sans-serif;  
−
    font-weight: bold;
+
  text-align: center;
−
    font-size: 28px !important;
+
 
}
 
}
−
.faculty {
+
.paragraphs img{
−
    font-size: 24px !important;
+
  position: relative;
−
    padding: 0 15px;
+
  display: inline-block;
−
    margin: 0 0 20px 0;
+
  margin: 10 auto;
−
    font-weight: bold;
+
 
}
 
}
−
.introduction {
 
−
    font-size: 20px !important;
 
−
    font-family: serif, 'Times New Roman';
 
−
    margin: 0.5px;
 
−
}
 
−
*{margin: 0;padding: 0;}
 
−
            #box{width: 800px;height: 150px;margin: 100px auto;position: relative;background: gray;overflow: hidden;}
 
−
            #box ul{position: absolute;left: 21px;top: 17px;}
 
−
            #box ul li{float: left;width: 190px;height: 150px;list-style: none;}
 
  
−
div.biopic{
+
.paragraphs a:visited { color:#5a3428;text-decoration: none;}
−
overflow: hidden;
+
.paragraphs a:hover { color:#80ddbf;text-decoration: none;}
−
width: 320px;
+
p.reference{
−
height: 320px;
+
  font-size: 15px !important;
−
border-radius: 160px;
+
−
margin: auto;
+
 
}
 
}
−
.bio1 .biopic img{
+
#rili a:visited { color:#5a3428;text-decoration: none;}
−
margin-left: -70px ;
+
#rili a:hover { color:#80ddbf;text-decoration: none;}
 +
.week{
 +
  text-align: center;
 
}
 
}
−
.conteudo div:nth-of-type(5) div:first-of-type img{
+
 
−
margin-left: -150px !important;
+
</style>
−
}
+
 
−
.conteudo div:nth-of-type(6) div:last-of-type img{
+
 
−
margin-left: -80px !important;
+
   
−
}.conteudo div:nth-of-type(7) div:first-of-type img{
+
−
margin-left: -90px !important;
+
−
}
+
−
.conteudo div:nth-of-type(8) div:last-of-type img{
+
−
margin-left: -20px !important;
+
−
}
+
−
.conteudo div:nth-of-type(2) div:last-of-type img, .conteudo div:nth-of-type(4) div:last-of-type img{
+
−
margin-left: -70px !important;
+
−
}
+
−
.media-body p{
+
−
width: 40%;
+
−
font-size: 15px;
+
−
text-align: justify;
+
−
}
+
−
.adpic{
+
−
width: 320px;
+
−
height: 240px;
+
−
overflow: hidden;
+
−
margin: 0 auto;
+
−
}
+
−
.row img{
+
−
margin: 0 auto;
+
−
}
+
−
</style>  
+
 
</head>
 
</head>
−
 
 
<body>
 
<body>
 +
 
<div class="body">
 
<div class="body">
−
<div id="header">
+
  <div id="header">
−
<!--LOGO LINK--->
+
  <!--LOGO LINK--->
−
<div id="logo"><a href="https://2018.igem.org/Team:SDU-CHINA"><img src="https://static.igem.org/mediawiki/2018/7/72/T--SDU-China--duihui.jpg" alt="LOGO" /></a></div>
+
  <div id="logo"><a href="https://2018.igem.org/Team:SDU-CHINA"><img src="https://static.igem.org/mediawiki/2018/7/72/T--SDU-China--duihui.jpg" alt="LOGO" /></a></div>
−
<div id="menu">
+
  <div id="menu">
−
<ul>
+
    <ul>
 
             <li>
 
             <li>
 
                 <a href="#">PROJECT &#9662;</a>
 
                 <a href="#">PROJECT &#9662;</a>
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                 </li>
 
                 </li>
 
         </ul>
 
         </ul>
−
</div>
+
  </div>
 
</div>
 
</div>
  
 
<div id="section">
 
<div id="section">
−
<div class="conteudo"><br><br>
+
  <div class="conteudo">
−
<h1 id="main-title">Team</h1>
+
    <h1 id="main-title">Notebook</h1>
−
          <h4 style="margin:25px 100px 10px 400px">Members</h4>
+
    <div class="rili" id="rili">
−
<div class="bio1">
+
−
<p class="name">Jiao Jin</p>
+
−
<div class="biopic"><img src="https://static.igem.org/mediawiki/2018/4/47/T--SDU-China--jinjiao.jpg" width="450" height="320px" alt=""/></div>
+
−
<div class="biotext">
+
−
      <p class="faculty">Team Leader</p>
+
−
      <p class="introduction">
+
−
      The mascot of the team! The major work for me is to cheer people up when things do not go well!
+
−
      </p>
+
−
    </div>
+
−
    </div>
+
−
    <div class="bio2">
+
−
<p class="name">Zhaoqin Zhang</p>
+
−
+
−
<div class="biotext">
+
−
      <p class="faculty">Competition Affairs/Experimentation</p>
+
−
      <p class="introduction">
+
−
      I’m a junior student majoring in biology. It is the first time for me as well as our team to participate in iGEM competition, I' m so excited to meet so much interesting guys! I mainly take charge of Human Practice and do some wet lab experiments, which offers me a lot experience in social skills and research skills. I am interested in synthetic biology in eukariotic cells and I believe synthetic biology is of great use in both research and practical use.
+
  
−
      </p>
+
    <div class="calendar1"><span></span><font><a href="#week1">week1</a></font>  
−
          </div>
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
−
          <div class="biopic"><img src="https://static.igem.org/mediawiki/2018/8/8d/T--SDU-China--zhangzhaoqin.jpg"width="450" height="320px" alt=""/></div>
+
    </div>
−
    </div>
+
    <div class="calendar1"><span></span><font><a href="#week2">week2</a></font>
−
    <div class="bio1">
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg" type=""></embed>
−
<p class="name">Liyuan Xi</p>
+
    </div>
−
<div class="biopic"><img src="https://static.igem.org/mediawiki/2018/6/69/T--SDU-China--xiliyuan.jpg"width="450" height="320px" alt=""/></div>
+
    <div class="calendar1"><span></span><font><a href="#week3">week3</a></font>
−
<div class="biotext">
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
−
      <p class="faculty">Experimentation</p>
+
    </div>
−
      <p class="introduction">
+
    <div class="calendar1"><span></span><font><a href="#week4">week4</a></font>
−
    I’m major in life science. I feel honored to be a member of SDU iGEM team and attend Jamboree this year. Shy as I am ,I hope I can make friends through iGEM!       
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
−
      </p>
+
    </div>
−
          </div>
+
    <div class="calendar1"><span></span><font><a href="#week5">week5</a></font>  
−
         
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
−
    </div>
+
    </div>
−
      <div class="bio2">
+
    <div class="calendar1"><span></span><font><a href="#week6">week6</a></font>  
−
<p class="name">Yize Hao</p>
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
−
+
    </div>
−
<div class="biotext">
+
    <div class="calendar1"><span></span><font><a href="#week7">week7</a></font>
−
      <p class="faculty">Experimentation/Wiki edit</p>
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg" type=""></embed>
−
      <p class="introduction">
+
    </div>
−
    I hope I can improve my ability of thinking as well as my technical skills through igem. I will begin my postgraduate career after one year. I hope I can go further along the road of scientific research.  
+
    <div class="calendar1"><span></span><font><a href="#week8">week8</a></font>
−
      </p>
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
−
          </div>
+
    </div>
−
          <div class="biopic"><img src="https://static.igem.org/mediawiki/2018/6/61/T--SDU-China--haoyize.jpg"width="480" height="320" alt=""/></div>
+
    <div class="calendar1"><span></span><font><a href="#week9">week9</a></font>  
−
    </div>
+
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week9">week10</a></font>  
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week9">week11</a></font>  
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week12">week12</a></font>
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week13">week13</a></font>
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week14">week14</a></font>
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week15">week15</a></font>  
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week16">week16</a></font>  
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week17">week17</a></font>  
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week18">week18</a></font>  
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week19">week19</a></font>  
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week20">week20</a></font>
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week21">week21</a></font>
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week22">week22</a></font>
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg" type=""></embed>
 +
    </div>
 +
    <div class="calendar2"><span></span><font><a href="#week23">week23</a></font>
 +
          <embed src="https://static.igem.org/mediawiki/2018/1/11/T--SDU-China--55.svg"  type=""></embed>
 +
    </div>
 +
    </div>
 +
     
 +
<div class="paragraphs">
 +
  <div id="week1" class="week">
 +
    <h4 >Week 1 (April 25th to April 29th) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
<p>Plasmid backbones pSR43.6 and pSR58.6 were assembled by PCR and Gibson Assembly and the DNA fragments cloned from original plasmid pJ101700 and paracr15A was examined by electrophoresis. To test whether the backbones were assembled correctly, colony PCR and electrophoresis were required and then the backbones were send to sequencing.<br></p>
 +
<img src="https://static.igem.org/mediawiki/2018/0/0e/T--SDU-China--week11.png"  display="block" alt=""><br>
  
−
    <div class="bio1">
+
<p>During electrophoresis of the PCR product, we discovered that the maker was not seen clearly.<br>
−
<p class="name">Zijian Pan</p>
+
We made Gibson Assemble: <a href="2018.igem.org/wiki/images/4/4c/T--SDU-China--Gibson_assembly_protocol.pdf">Protocol 3</a></p>
−
<div class="biopic"><img src="https://static.igem.org/mediawiki/2018/1/1b/T--SDU-China--panzijian.jpg"width="480" height="320" alt=""/></div>
+
<table border="1">
−
<div class="biotext">
+
  <tr>
−
      <p class="faculty">Experimentation</p>
+
  <th>Assembly master mixture</th>
−
      <p class="introduction">
+
  <td>1.25 ml</td>
−
    I am very grateful for having the opportunity to play a role in our igem team. For the duration of preparing for iGEM, we struggle with countless difficulties together. For this duration, we harvest knowledge and life-long friendships, as well.
+
</tr>
−
            </p>
+
<tr>
−
          </div>
+
  <th>5×isothermal reaction buffer</th>
−
    </div>
+
  <td>500μl</td>
 +
</tr>
 +
<tr>
 +
  <th>T5 exonuclease (10U/μl)</th>
 +
  <td>1μl</td>
 +
</tr>
 +
<tr>
 +
  <th>DNA polymerase (2U/μl)</th>
 +
  <td>31.25μl</td>
 +
</tr>
 +
<tr>
 +
  <th>Taq DNA ligase (40U/μl)</th>
 +
  <td>ddH2O</td>
 +
</tr>
 +
<tr>
 +
  <th>DNA fragment</th>
 +
  <td>Equal volume</td>
 +
</tr>
 +
</table>
 +
<img src="https://static.igem.org/mediawiki/2018/f/f3/T--SDU-China--week12.jpg" height="300px"  alt="">
 +
<img src="https://static.igem.org/mediawiki/2018/0/06/T--SDU-China--week13.jpg" height="300px" alt=""><br>
 +
<img src="https://static.igem.org/mediawiki/2018/6/67/T--SDU-China--week14.jpg" alt="">
 +
<p>All plasmid backbones of pSR58.6 showed in correct length except pSR58.6 NO.10.</p>
 +
  </div>
 +
  <div id="week2" class="week">
 +
    <h4 >Week 2 (May 2nd to May 8th) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
    <p>We derived our plasmid backbones pSR43.6 and pSR58.6 and then sent them for synthesising the final plasmid.
 +
To test the influence of blocking gltA to cell growth, we decided to construct a new plasmid p58.6gRNA containing Para and gRNA for type I-e CRISPRi and gltA.<br>
 +
DNA fragments were copied from pSR43.6 and pcrRNA-bssl-7(provided by our lab), the PCR products are shown below.
 +
</p>
 +
<img src="https://static.igem.org/mediawiki/2018/9/9d/T--SDU-China--week21.jpg" alt="">
 +
<p>New plasmid was assembled by Gibson Assembly, and transformed into <i>E. coli</i> DH5α, then colony PCR and electrophoresis were applied and we sent the prodcuts to sequencing.</p>
 +
<img src="https://static.igem.org/mediawiki/2018/c/c3/T--SDU-China--week22.jpg" height="300px" alt="">
 +
<p>The result of electrophoresis showed only pSR58.6gRNA-8 was correct.<br>
 +
To assemble pcrRNA.bbsI-7-phac, we cloned DNA fragments from pcrRNA.bbsI-7 and pBHR68 by PCR, and the two fragments were assembled by Gibson assembly. But we failed in PCR, and it took us some time to repeat PCR.
 +
</p>
 +
<img src="https://static.igem.org/mediawiki/2018/9/90/T--SDU-China--week23.jpg" height="300px" alt="">
 +
<p>Considering the failures in assembling pPT7-sfGFP, we cloned four DNA fragments (sfGFP、CmR、Ori、araR) by PCR and tried to assemble them by Gibson assembly at a time. Then this new plasmid was transformed into <i>E. coli</i> DH5α.</p>
 +
<img src="https://static.igem.org/mediawiki/2018/b/b8/T--SDU-China--week24.jpg" alt="">
  
−
      <div class="bio2">
+
  </div>
−
<p class="name">Junyang Chen</p>
+
<div class="week" id="week3">
−
+
  <h4 >Week 3 (May 9th to May 15th) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
−
<div class="biotext">
+
  <p>pSR58.6gRNA was transformed into <i>E. coli</i> EE-E15, in which Cas3 has been knocked out, provided by our lab. </p>
−
      <p class="faculty">Experimentation</p>
+
  <img src="https://static.igem.org/mediawiki/2018/2/2d/T--SDU-China--week31.jpg" height="300px" alt="EEgRNA-5 was not correct"><br>
−
      <p class="introduction">
+
  (EEgRNA-5 was not correct)
−
    I am so kind of being a member of SDU-China iGEM team and feeling honoured to work with everyone in our team. As a part of our team, I am responsible for our interlab study. In the meantime, I also take part in our wetlab experiment. Particularly , iGEM project greatly helps me to form my science elaborative faculty, which contributes to my future development and career. Wish us meet with success in this Jamboree！
+
  <p>After testing the transformation, growth curve was made to figure out the impact of crRNA along with CRISPRi.</p>
 +
  <img src="https://static.igem.org/mediawiki/2018/b/b3/T--SDU-China--week32.jpg" alt="">
 +
  <img src="https://static.igem.org/mediawiki/2018/e/ea/T--SDU-China--week33.jpg" alt=""><br>
 +
  (BC: blank control; c: arabinose without pSR58.6gRNA; a: arabinose and pSR58.6gRNA; concentration of arabinose: 0.2g/L; 0.4g/L; 0.6g/L)
 +
  <img src="https://static.igem.org/mediawiki/2018/4/4e/T--SDU-China--week34.jpg" alt="">
 +
  <img src="https://static.igem.org/mediawiki/2018/b/bf/T--SDU-China--week35.jpg" alt=""><br>
 +
  (BC: blank control; c: arabinose without pSR58.6gRNA; a: arabinose and pSR58.6gRNA; concentration of arabinose: 0.02g/L; 0.2g/L; 2g/L)
 +
  <p>As for pcrRNA.bbsI-7-phac, the PCR products were still incorrect tested by electrophoresis. So we tried several different PCR systems and redesigned primers.</p>
 +
  <p>pPT7-sfGFP was not correct by Gibson, we tried restriction sites and restriction enzymes instead, the new plasmid was transformed into <i>E. coli</i> DH5α and tested by colony PCR and sequencing.</p>
 +
</div>
 +
<div class="week" id="week4">
 +
  <h4 >Week 4 (May 16th to May 23rd) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>We cultured bacteria transformed with pSR58.6gRNA in M9 (commonly used for industrial fermentation), and repeated measuring growth curve following the same protocol as week 3.</p>
 +
  <p>We discovered the impact of type I-e CRISPRi to bacteria growth is relatively weak.<br>
 +
pcrRNA.bbsI-7-phac was assembled by both Gibson assembly and restriction enzymes, and it was successfully assembled by Gibson assembly according to sequencing results.
 +
</p>
 +
<img src="https://static.igem.org/mediawiki/2018/3/39/T--SDU-China--week41.jpg" height="400px" alt="">
 +
</div>
 +
<div class="week" id="week5">
 +
  <h4 >Week 5 (May 24th to May 31st) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>PT7 was inserted into pcrRNA.bbsI-7-phac through PCR and Gibson assembly, but it was failed. So we tried to assemble the plasmid by restriction enzymes.</p>
 +
  <img src="https://static.igem.org/mediawiki/2018/9/98/T--SDU-China--week51.jpg" height="500px" alt="">
 +
</div>
 +
<div class="week" id="week6">
 +
  <h4 >Week 6 (June 4th to June 10th) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>We were appreciated to receive pSR43.6r and pHZ from HZAU-China2017 and they were transformed into <i>E. coli</i> DH5α. pSR43.6r was derived and the ccaS component was improved by deleting about eight hundred base pairs according to paper [1]. But we were stopped by PCR.<br>
 +
pHZphbc, which contains phbCAD gene cluster, was assembled by PCR and Gibson assembly.
 +
</p>
 +
<img src="https://static.igem.org/mediawiki/2018/3/3b/T--SDU-China--week61.jpg" alt="">
 +
<p>phbCAD gene cluster was inserted into pcrRNA.bbsI-7 by both restriction enzymes and Gibson assembly. The sequencing result showed that this new plasmid was assembled successfully by Gibson.</p>
 +
<img src="https://static.igem.org/mediawiki/2018/a/ae/T--SDU-China--week62.jpg" alt="">
 +
<p class="reference">[1]. Nakajima, M., et al., Construction of a Miniaturized Chromatic Acclimation Sensor from Cyanobacteria with Reversed Response to a Light Signal. Scientific Reports, 2016. 6(1).</p>
 +
</div>
 +
<div class="week" id="week7">
 +
  <h4 >Week 7 (June 11th to June 17th) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>pHZphbc was failed in assebling, so we repeated cloning and redesigned the plasmid at the same time. Tested by colony PCR and sequencing, pSR43.6-ccaS#10 was successfully assembled. To insert crRNA into pSR43.6r, we needed to construct an intermediate plasmid called pHZZJ.</p>
 +
  <p>pPT7-crRNA was assembled successfully by restriction enzymes after editing PT7 for a long time.</p>
 +
</div>
 +
<div class="week" id="week8">
 +
  <h4 >Week 8 (June 18th to June 24th) <a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>pHZphbc and pHZZJ were assembled successfully. To construct pSR43.6-ccaS#crRNA, DNA fragments were copied from pSR43.6-ccaS#10 and pHZZJ and then they were assembled through Gibson assembly.</p>
 +
  <p>pcrRNA.bbsI-7-opto-phbc was transformed into <i>E. coli</i> DE3, we wanted to test the production of PHB by Nile Red（此处应有文献引用）. We did this experiment applying <a href="https://static.igem.org/mediawiki/2018/d/d3/T--SDU-China--Nile_Red.pdf">Protocol 15</a>（. Here is the result.</p>
 +
  <img src="https://static.igem.org/mediawiki/2018/4/45/T--SDU-China--week81.png" height="400px" alt="">
 +
  <p>pPT7-sfGFP was assembled successfully by restriction enzymes.</p>
 +
</div>
 +
<div class="week" id="week9">
 +
  <h4 >Week 9-11 (June 25th to July 14th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>It was time for final examination!</p>
 +
</div>
 +
<div class="week" id="week12">
 +
  <h4 >Week 12 (July 15th to July 22th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>We were blocked by assembling pSR43.6-ccaS#10-crRNA, we tried both Gibson assembly and restriction enzyme, and we redesigned the plasmid and primers for many times. We had to figure out what was going on.<br>
 +
At the same time, pHZccdA which contains antitoxic protein ccdA but without promoter was assembled by PCR and Gibson assembly.
 +
</p>
 +
</div>
 +
<div class="week" id="week13">
 +
  <h4 >Week 13 (July 23rd to July 30th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>pSR43.6-ccaS#10-crRNA was still under assembling, we suspected that the leakage of crRNA might prevent bacteria from growing, so the Gibson product was transformed into EE-E15, in which Cas3 protein has been knocked out. EE-E15 grew at last but the result of colony PCR was incorrect.
 +
</p>
 +
<p>Since the result of Nile Red wasn’t desirable, we tried to change the terminator of PHBcad gene cluster through restriction enzymes, but we failed.</p>
 +
</div>
 +
<div class="week" id="week14">
 +
  <h4 >Week 14 (July 31st to August 5th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>Promoters with different strength (J23101, J23105, J23108, J23113 and J23114) were inserted into pHZccdA through Gibson assembly. But only J23108 and J23113 were inserted successfully.    <br>
 +
We tested the production of PHB with Nile Red again, according to <a href="https://static.igem.org/mediawiki/2018/d/d3/T--SDU-China--Nile_Red.pdf">Protocol 15</a> <br>
 +
Result:
 +
</p>
 +
<img src="https://static.igem.org/mediawiki/2018/4/4e/T--SDU-China--week141.png" height="400px" alt="">
 +
  </div>
 +
  <div class="week" id="week15">
 +
    <h4 >Week 15 (August 6th to August 12th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
    <p>While assembling pHZJ23ccdA series, we characterized the improved ccaS-ccaR two-component system by measuring GFP fluorescence according to <a href="https://static.igem.org/mediawiki/2018/3/35/T--SDU-China--Characterization_of_CcaS-CcaR_system.pdf">Protocol 11</a><br>
 +
Result:
 +
</p>
 +
<img src="https://static.igem.org/mediawiki/2018/3/30/T--SDU-China--week151.png" height="400px" alt="">
 +
<p>ccdB and degradation tag was inserted into pcrRNA.bbsI-7 after promoter T7 by Gibson assembly and restriction enzymes.</p>
 +
  </div>
 +
  <div class="week" id="week16">
 +
    <h4 >Week 16 (August 13th to August 20th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
    <p>We found that there were some problems in pSR43.6-ccaS#10 by characterizing pSR43,6r and pHZ, so we redesigned this plasmid as well as other pSR43.6-ccaS# series (#3,#4), we assembled pSR43.6-ccaS# series by PCR and Gibson assembly. pSR43.6-ccaS# series were assembled successfully.<br>
 +
Result for characterization:  <br></p>
 +
<img src="https://static.igem.org/mediawiki/2018/c/c9/T--SDU-China--week161.png" height="400px' alt="">
 +
<p>The new plasmid pcrRNA.bbsI-7-ccdb was assembled and tested by colony PCR and sequencing.</p>
 +
<p>The split T7 RNA polymerase was characterized under blue light according to <a href="https://static.igem.org/mediawiki/2018/b/bb/T--SDU-China--Characterization_of_split_RNAP.pdf">Protocol 13</a></p>
 +
<p>The result showed that the split T7 RNA polymerase did not work, we held a troubleshooting for that with our advisors and instructors, wanting to figure out the problems and solutions.</p>
 +
</p>
 +
  </div>
 +
  <div class="week" id="week17">
 +
    <h4 >Week 17 (August 21st to August 28th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
    <p>After finishing assembling pSR43.6-ccaS# series, they were transformed into <i>E. coli</i> TOP10 along with pHZ, and the ccaS-ccaR two-component system was characterized again according to <a href="https://static.igem.org/mediawiki/2018/3/35/T--SDU-China--Characterization_of_CcaS-CcaR_system.pdf">Protocol 11</a>.</p>
 +
    <p>Finally pSR43.6-ccaS#-crRNA series were born through Gibson assembly.</p>
 +
    <p>we wondered if there was something wrong with PT7 and split RNA polymerase, so pET28a(DE3) was applied to test whether pT7 could work properly, and we did SDS-PAGE to detect the expression of proteins. But pT7 worked properly.</p>
 +
    <img src="https://static.igem.org/mediawiki/2018/4/45/T--SDU-China--week171.png" alt="">
 +
  </div>
 +
<div class="week" id="week18">
 +
    <h4 >Week 18 (August 29th to September 7th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
    <p>pHZJ23ccdAB series were assembled by PCR and Gibson assembly.
 +
pSR43.6-ccaS#-crRNA and pHZphbc were characterized by measuring the production of PHB according to <a href="https://static.igem.org/mediawiki/2018/8/83/T--SDU-China--Measurement_of_PHB_production-GC.pdf">Protocol 14</a>.
 +
</p>
 +
<p>Blue light components were inserted into a high-copy plasmid backbone with high GFP expression, and this system was tested again under blue light according to <a href="https://static.igem.org/mediawiki/2018/b/bb/T--SDU-China--Characterization_of_split_RNAP.pdf">Protocol 13</a>.</p>
 +
<p>We couldn’t figure out the problem of this system and we decided to stop experiment on blue light component due to the limitation of time.</p>
 +
  </div>   
 +
<div class="week" id="week19">
 +
  <h4 >Week 19 (September 10th to September 16th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>To make phbCAD gene cluster express constitutively, phbCAD gene cluster was inserted into pHZ3.1 through Gibson Assembly.<br>
 +
Ccas-ccaR system was characterized by measuring fluorescence, and production of PHB was measured according to <a href="https://static.igem.org/mediawiki/2018/b/bb/T--SDU-China--Characterization_of_split_RNAP.pdf">Protocol 13</a>. </p>
 +
<img src="https://static.igem.org/mediawiki/2018/9/94/T--SDU-China--week191.png" height="300px" alt="">
 +
<img src="https://static.igem.org/mediawiki/2018/6/68/T--SDU-China--week192.png" height="300px" alt="">
 +
<p>Inhibition of bacteria growth by type I-e CRISPRi was tested by measuring cell density, but the result was not good enough.</p>
 +
</div>
 +
<div class="week" id="week20">
 +
  <h4 >Week 20 (September 17th to September 23rd)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>We found two mutations in phbCAD gene cluster by sequencing, and we wondered it might be the cause of the low production of PHB. At the same time, plasmids that would be used as control were under assembling.</p>
 +
  <br>
 +
</div>
 +
<div class="week" id="week21">
 +
  <h4 >Week 21 (September 24th to October 1st)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>We were busy with standardization and part registry, at the same time, bacteria strain responsible for production of PHB induced by green light was under constructing. We were still struggling testing the effect caused by crRNA to bacteria growth. Characterization of Ccas-CcaR system was done in 24-well plate. At the end of this week, part BBa_K2627000 is successfully assembled and finished sequencing.</p><br>
 +
<img src="https://static.igem.org/mediawiki/2018/3/36/T--SDU-China--week211.png" alt="">
 +
</div>
 +
<div class="week" id="week22">
 +
  <h4 >Week 22 (October 2nd to October 7th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>We were happy with the National Day Holiday, but we still need to continue our experiment or we might leave the project unfinished. Bacteria strains which can synthesize PHB induced by light were selected through Nile Red according to https://static.igem.org/mediawiki/2018/d/d3/T--SDU-China--Nile_Red.pdf. Characterization of Ccas-CcaR system was done in 24-well plate, and characterization of crRNA was going not very well. But the good news was that at the end of this vocation, the rest of the parts we were willing to send were assembled and sequenced.</p>
 +
  <img src="https://static.igem.org/mediawiki/2018/3/35/T--SDU-China--week221.png" alt="">
 +
  <img src="https://static.igem.org/mediawiki/2018/c/c3/T--SDU-China--week222.png" alt=""><br>
 +
</div>
 +
<div class="week" id="week23">
 +
  <h4 >Week 23 (October 8th to October15th)<a class="p-top" href="#rili">&#x25b2; back</a></h4>
 +
  <p>Finally, we finished constructing the bacteria strain that could produce PHB under green light, and the new strain was tested by measuring the relative weight of PHB through Gas Chromatography and HPLC following the <a href="https://static.igem.org/mediawiki/2018/8/83/T--SDU-China--Measurement_of_PHB_production-GC.pdf">protoco</a>l. Since the effect of type I-E CRISPRi was not ideal when induced by light, so we chose to test it with arabinose as its inducer.</p><br><br><br><br><br><br>
 +
</div>
  
−
            </p>
+
</div>
−
          </div>
+
−
          <div class="biopic"><img src="https://static.igem.org/mediawiki/2018/a/a2/T--SDU-China--chenjunyang.jpg"width="480" height="320" alt=""/></div>
+
−
    </div>
+
−
    <div class="bio1">
+
−
<p class="name">Zilong Geng</p>
+
−
<div class="biopic"><img src="https://static.igem.org/mediawiki/2018/f/f2/T--SDU-China--gengzilong.jpg"width="480" height="320" alt=""/></div>
+
−
<div class="biotext">
+
−
      <p class="faculty">Experimentation</p>
+
−
      <p class="introduction">
+
−
    Howdy, this is Zero. Since it is my first time to participate such big competition as the iGEM, I feel so honored and appreciated. The iGEM opened my eyes with a brand new world where  I never set foot. And the cross disciplines in synthetic biology truly rebuilt my point of views about traditional biology, which makes me seek for higher horizons. My teammates work really hard and solidly, which makes me grateful and teaches me a lesson about what teamwork is.
+
  
−
            </p>
+
</div>
−
          </div>
+
</div>
−
    </div>
+
−
   
+
−
    <div class="bio2">
+
−
<p class="name">Yumin Meng</p>
+
−
+
−
<div class="biotext">
+
−
      <p class="faculty">Experimentation</p>
+
−
      <p class="introduction">
+
−
    I study biology in the School of Life Science and I am a sophoman. I undertook the job of designing and assembling the genetic circuit of the project with other teammates. In addition, I manually modified our experimental instrument to make it more suitable for our project with my hands-on ability. Looking forward to the new age of synthetic biology from iGEM.
+
−
      </p>
+
−
          </div>
+
−
          <div class="biopic"><img src="https://static.igem.org/mediawiki/2018/7/70/T--SDU-China--mengyumin.jpg"width="450" height="320px" alt=""/></div>
+
−
    </div>
+
−
    <div class="bio1">
+
−
<p class="name">Weiguang Wang</p>
+
−
<div class="biopic"><img src="https://static.igem.org/mediawiki/2018/8/8b/T--SDU-China--wangweiguang.jpg"width="450" height="600px" alt=""/></div>
+
−
<div class="biotext">
+
−
      <p class="faculty">Hardware</p>
+
−
      <p class="introduction">
+
−
    I am a microbiology student and I am responsible for the hardware production in the team.     
+
−
      </p>
+
−
          </div>
+
−
         
+
−
    </div>
+
−
    <h4 style="text-align: center;">Advisor</h4>
+
−
    <div class="row">
+
−
        <div class="col-md-6">
+
−
        <div class="adpic"><img src="https://static.igem.org/mediawiki/2018/b/bb/T--SDU-China--liuzedao.jpg" width="320" height="240"> </div>
+
−
       
+
−
        <div class="media-body">
+
−
        <h4 class="media-heading ouc-pi"><strong>Zedao Liu</strong></h4>
+
−
   
+
−
                    <p>As an undergraduate student in Shandong University, majoring in clinical medicine, I’m honored to have a chance to take part in iGEM competition. Being interested in synthetic biology, I enjoyed concentrating on doing experiment with my partners. I help the team prepare something and give suggestions.</p><br>
+
−
        </div>
+
−
        </div>
+
−
        <div class="col-md-6">
+
−
          <div class="adpic"><img src="https://static.igem.org/mediawiki/2018/f/f0/T--SDU-China--zhaoxianghui.jpg" width="320" height="450" style="margin-top: -200px"></div>
+
−
       
+
−
        <div class="media-body">
+
−
        <h4 class="media-heading ouc-pi"><strong>Xianghui Zhao</strong></h4>
+
−
                    <p>As an undergraduate student in Shandong University, majoring in clinical medicine, I’m honored to have a chance to take part in iGEM competition. Being interested in synthetic biology, I enjoyed concentrating on doing experiment with my partners. I help the team prepare something and give suggestions.</p><br>
+
−
        </div>
+
−
        </div>
+
−
    <h4 style="text-align: center;">Instructor</h4>
+
−
    </div>
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Revision as of 18:15, 16 October 2018

Notebook

Week 1 (April 25th to April 29th) ▲ back

Plasmid backbones pSR43.6 and pSR58.6 were assembled by PCR and Gibson Assembly and the DNA fragments cloned from original plasmid pJ101700 and paracr15A was examined by electrophoresis. To test whether the backbones were assembled correctly, colony PCR and electrophoresis were required and then the backbones were send to sequencing.


During electrophoresis of the PCR product, we discovered that the maker was not seen clearly.
We made Gibson Assemble: Protocol 3

Assembly master mixture 1.25 ml
5×isothermal reaction buffer 500μl
T5 exonuclease (10U/μl) 1μl
DNA polymerase (2U/μl) 31.25μl
Taq DNA ligase (40U/μl) ddH2O
DNA fragment Equal volume

All plasmid backbones of pSR58.6 showed in correct length except pSR58.6 NO.10.

Week 2 (May 2nd to May 8th) ▲ back

We derived our plasmid backbones pSR43.6 and pSR58.6 and then sent them for synthesising the final plasmid. To test the influence of blocking gltA to cell growth, we decided to construct a new plasmid p58.6gRNA containing Para and gRNA for type I-e CRISPRi and gltA.
DNA fragments were copied from pSR43.6 and pcrRNA-bssl-7(provided by our lab), the PCR products are shown below.

New plasmid was assembled by Gibson Assembly, and transformed into E. coli DH5α, then colony PCR and electrophoresis were applied and we sent the prodcuts to sequencing.

The result of electrophoresis showed only pSR58.6gRNA-8 was correct.
To assemble pcrRNA.bbsI-7-phac, we cloned DNA fragments from pcrRNA.bbsI-7 and pBHR68 by PCR, and the two fragments were assembled by Gibson assembly. But we failed in PCR, and it took us some time to repeat PCR.

Considering the failures in assembling pPT7-sfGFP, we cloned four DNA fragments (sfGFP、CmR、Ori、araR) by PCR and tried to assemble them by Gibson assembly at a time. Then this new plasmid was transformed into E. coli DH5α.

Week 3 (May 9th to May 15th) ▲ back

pSR58.6gRNA was transformed into E. coli EE-E15, in which Cas3 has been knocked out, provided by our lab.

EEgRNA-5 was not correct
(EEgRNA-5 was not correct)

After testing the transformation, growth curve was made to figure out the impact of crRNA along with CRISPRi.


(BC: blank control; c: arabinose without pSR58.6gRNA; a: arabinose and pSR58.6gRNA; concentration of arabinose: 0.2g/L; 0.4g/L; 0.6g/L)
(BC: blank control; c: arabinose without pSR58.6gRNA; a: arabinose and pSR58.6gRNA; concentration of arabinose: 0.02g/L; 0.2g/L; 2g/L)

As for pcrRNA.bbsI-7-phac, the PCR products were still incorrect tested by electrophoresis. So we tried several different PCR systems and redesigned primers.

pPT7-sfGFP was not correct by Gibson, we tried restriction sites and restriction enzymes instead, the new plasmid was transformed into E. coli DH5α and tested by colony PCR and sequencing.

Week 4 (May 16th to May 23rd) ▲ back

We cultured bacteria transformed with pSR58.6gRNA in M9 (commonly used for industrial fermentation), and repeated measuring growth curve following the same protocol as week 3.

We discovered the impact of type I-e CRISPRi to bacteria growth is relatively weak.
pcrRNA.bbsI-7-phac was assembled by both Gibson assembly and restriction enzymes, and it was successfully assembled by Gibson assembly according to sequencing results.

Week 5 (May 24th to May 31st) ▲ back

PT7 was inserted into pcrRNA.bbsI-7-phac through PCR and Gibson assembly, but it was failed. So we tried to assemble the plasmid by restriction enzymes.

Week 6 (June 4th to June 10th) ▲ back

We were appreciated to receive pSR43.6r and pHZ from HZAU-China2017 and they were transformed into E. coli DH5α. pSR43.6r was derived and the ccaS component was improved by deleting about eight hundred base pairs according to paper [1]. But we were stopped by PCR.
pHZphbc, which contains phbCAD gene cluster, was assembled by PCR and Gibson assembly.

phbCAD gene cluster was inserted into pcrRNA.bbsI-7 by both restriction enzymes and Gibson assembly. The sequencing result showed that this new plasmid was assembled successfully by Gibson.

[1]. Nakajima, M., et al., Construction of a Miniaturized Chromatic Acclimation Sensor from Cyanobacteria with Reversed Response to a Light Signal. Scientific Reports, 2016. 6(1).

Week 7 (June 11th to June 17th) ▲ back

pHZphbc was failed in assebling, so we repeated cloning and redesigned the plasmid at the same time. Tested by colony PCR and sequencing, pSR43.6-ccaS#10 was successfully assembled. To insert crRNA into pSR43.6r, we needed to construct an intermediate plasmid called pHZZJ.

pPT7-crRNA was assembled successfully by restriction enzymes after editing PT7 for a long time.

Week 8 (June 18th to June 24th) ▲ back

pHZphbc and pHZZJ were assembled successfully. To construct pSR43.6-ccaS#crRNA, DNA fragments were copied from pSR43.6-ccaS#10 and pHZZJ and then they were assembled through Gibson assembly.

pcrRNA.bbsI-7-opto-phbc was transformed into E. coli DE3, we wanted to test the production of PHB by Nile Red（此处应有文献引用）. We did this experiment applying Protocol 15（. Here is the result.

pPT7-sfGFP was assembled successfully by restriction enzymes.

Week 9-11 (June 25th to July 14th)▲ back

It was time for final examination!

Week 12 (July 15th to July 22th)▲ back

We were blocked by assembling pSR43.6-ccaS#10-crRNA, we tried both Gibson assembly and restriction enzyme, and we redesigned the plasmid and primers for many times. We had to figure out what was going on.
At the same time, pHZccdA which contains antitoxic protein ccdA but without promoter was assembled by PCR and Gibson assembly.

Week 13 (July 23rd to July 30th)▲ back

pSR43.6-ccaS#10-crRNA was still under assembling, we suspected that the leakage of crRNA might prevent bacteria from growing, so the Gibson product was transformed into EE-E15, in which Cas3 protein has been knocked out. EE-E15 grew at last but the result of colony PCR was incorrect.

Since the result of Nile Red wasn’t desirable, we tried to change the terminator of PHBcad gene cluster through restriction enzymes, but we failed.

Week 14 (July 31st to August 5th)▲ back

Promoters with different strength (J23101, J23105, J23108, J23113 and J23114) were inserted into pHZccdA through Gibson assembly. But only J23108 and J23113 were inserted successfully.
We tested the production of PHB with Nile Red again, according to Protocol 15
Result:

Week 15 (August 6th to August 12th)▲ back

While assembling pHZJ23ccdA series, we characterized the improved ccaS-ccaR two-component system by measuring GFP fluorescence according to Protocol 11
Result:

ccdB and degradation tag was inserted into pcrRNA.bbsI-7 after promoter T7 by Gibson assembly and restriction enzymes.

Week 16 (August 13th to August 20th)▲ back

We found that there were some problems in pSR43.6-ccaS#10 by characterizing pSR43,6r and pHZ, so we redesigned this plasmid as well as other pSR43.6-ccaS# series (#3,#4), we assembled pSR43.6-ccaS# series by PCR and Gibson assembly. pSR43.6-ccaS# series were assembled successfully.
Result for characterization:

The new plasmid pcrRNA.bbsI-7-ccdb was assembled and tested by colony PCR and sequencing.

The split T7 RNA polymerase was characterized under blue light according to Protocol 13

The result showed that the split T7 RNA polymerase did not work, we held a troubleshooting for that with our advisors and instructors, wanting to figure out the problems and solutions.

Week 17 (August 21st to August 28th)▲ back

After finishing assembling pSR43.6-ccaS# series, they were transformed into E. coli TOP10 along with pHZ, and the ccaS-ccaR two-component system was characterized again according to Protocol 11.

Finally pSR43.6-ccaS#-crRNA series were born through Gibson assembly.

we wondered if there was something wrong with PT7 and split RNA polymerase, so pET28a(DE3) was applied to test whether pT7 could work properly, and we did SDS-PAGE to detect the expression of proteins. But pT7 worked properly.

Week 18 (August 29th to September 7th)▲ back

pHZJ23ccdAB series were assembled by PCR and Gibson assembly. pSR43.6-ccaS#-crRNA and pHZphbc were characterized by measuring the production of PHB according to Protocol 14.

Blue light components were inserted into a high-copy plasmid backbone with high GFP expression, and this system was tested again under blue light according to Protocol 13.

We couldn’t figure out the problem of this system and we decided to stop experiment on blue light component due to the limitation of time.

Week 19 (September 10th to September 16th)▲ back

To make phbCAD gene cluster express constitutively, phbCAD gene cluster was inserted into pHZ3.1 through Gibson Assembly.
Ccas-ccaR system was characterized by measuring fluorescence, and production of PHB was measured according to Protocol 13.

Inhibition of bacteria growth by type I-e CRISPRi was tested by measuring cell density, but the result was not good enough.

Week 20 (September 17th to September 23rd)▲ back

We found two mutations in phbCAD gene cluster by sequencing, and we wondered it might be the cause of the low production of PHB. At the same time, plasmids that would be used as control were under assembling.


Week 21 (September 24th to October 1st)▲ back

We were busy with standardization and part registry, at the same time, bacteria strain responsible for production of PHB induced by green light was under constructing. We were still struggling testing the effect caused by crRNA to bacteria growth. Characterization of Ccas-CcaR system was done in 24-well plate. At the end of this week, part BBa_K2627000 is successfully assembled and finished sequencing.


Week 22 (October 2nd to October 7th)▲ back

We were happy with the National Day Holiday, but we still need to continue our experiment or we might leave the project unfinished. Bacteria strains which can synthesize PHB induced by light were selected through Nile Red according to https://static.igem.org/mediawiki/2018/d/d3/T--SDU-China--Nile_Red.pdf. Characterization of Ccas-CcaR system was done in 24-well plate, and characterization of crRNA was going not very well. But the good news was that at the end of this vocation, the rest of the parts we were willing to send were assembled and sequenced.


Week 23 (October 8th to October15th)▲ back

Finally, we finished constructing the bacteria strain that could produce PHB under green light, and the new strain was tested by measuring the relative weight of PHB through Gas Chromatography and HPLC following the protocol. Since the effect of type I-E CRISPRi was not ideal when induced by light, so we chose to test it with arabinose as its inducer.