Difference between revisions of "Team:NKU China/Experiments"

 
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<div id="dem-head">Demonstrate</div>
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<div id="exp-head">Experiment</div>
<div class="dem-header">Demonstration of emulsifying effect of fermentation broth</div>
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<div class="dem-p">We used diesel to verify the emulsifying effect of FIL-07 ABCRI. We added fermentation broth of FY-07 and FY-07 ABC to the diesel in the two tubes respectively. Shook the test tube, and then stood for six hours. After that, we can clearly observe that the diesel fuel in the test tube, which added fermentation broth FY-07 ABC, was emulsified. Experimental results show that the FY-07 ABC, which produce rhamnolipid, can be a good emulsion of oil.</div>
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<div class="dem-pic"><img src="https://static.igem.org/mediawiki/2017/c/ce/T--NKU_China--dem1.png"/></div>
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<div class="dem-header">Demonstration of emulsifying effect of fermentation broth</div>
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<div class="dem-p">In the experimental results already in our laboratory, it has been shown that the cellulose produced by <i>Enterobacter</i> sp. FY-07 has a clogging effect on soil channels.</div>
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<div class="dem-header">Discussion and future plans</div>
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<div class="dem-p" style="margin-bottom:5vmin;">In this summer, we have proven that every part of our project design is available. We can believe that the engineered <i>Enterobacter</i> sp. FY-07 can block the channels in the soil and emulsify the oil. Just because some of the difficulties can be solved, our construction of the bacteria have not yet been completed. In the next days, we will complete the construction of the bacteria and further verify its function.</div>
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<div class="exp-header">2017.7.10-8.20  Construction of <i>BcsA</i>-knockout <i>Enterobacteria</i> sp.FY-07</div>
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<div class="exp-p">In order to make the production of cellulose become controllable, we knocked out the BcsA gene (the coding gene of the A subunit of the cellulose synthase) in FY-07. It was observed that FY-07 knocked out the BcsA gene no longer produced cellulose. When we replenish the <i>BcsA</i> gene into FY-07, FY-07 began to produce cellulose again. This phenomenon can be clearly observed on Congo red media. On the Congo red medium, when the bacteria produce cellulose, the colonies will show red.</div>
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<div class="exp-header">2017.7.3-9.24  Construction of engineered Enterobacter <i>sp. FY-07</i></div>
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<div class="exp-p">Our project is aiming to engineer <i>Enterobacter</i> sp. FY-07 (which is separated from oilfield produced water and able to produce cellulose naturally), so as to controllably produce rhamnolipid and cellulose.</div>
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<div class="exp-header">2017.7.3-9.3 Functional Test of Our Design</div>
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<div class="exp-p">We have test the functional of gene <i>rhlABC</i>, <i>BcsA</i> and <i>fimS</i> switch. The results are roughly in accordance with our expectation. </div>
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<div class="exp-header">2017.9.25-10.22 Basic Parts Construction</div>
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<div class="exp-p">The lyase, <i>fimS</i> and <i>fimE</i> genes are cloned by PCR. Then both these segments and pSB1C3 vector were treated with restriction enzymes. After that, the three gene were separately ligated to linear pSB1C3, and the ligation products were separately transformed into DH5α. Verification PCR was performed to select the positive clones. The positive strains were chosen to be cultured overnight and plasmids were extracted. After restriction enzyme digestion verification, the positive clones were sequenced.</div>
 
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Latest revision as of 22:41, 1 November 2017

Experiment
2017.7.10-8.20 Construction of BcsA-knockout Enterobacteria sp.FY-07
In order to make the production of cellulose become controllable, we knocked out the BcsA gene (the coding gene of the A subunit of the cellulose synthase) in FY-07. It was observed that FY-07 knocked out the BcsA gene no longer produced cellulose. When we replenish the BcsA gene into FY-07, FY-07 began to produce cellulose again. This phenomenon can be clearly observed on Congo red media. On the Congo red medium, when the bacteria produce cellulose, the colonies will show red.
2017.7.3-9.24 Construction of engineered Enterobacter sp. FY-07
Our project is aiming to engineer Enterobacter sp. FY-07 (which is separated from oilfield produced water and able to produce cellulose naturally), so as to controllably produce rhamnolipid and cellulose.
2017.7.3-9.3 Functional Test of Our Design
We have test the functional of gene rhlABC, BcsA and fimS switch. The results are roughly in accordance with our expectation.
2017.9.25-10.22 Basic Parts Construction
The lyase, fimS and fimE genes are cloned by PCR. Then both these segments and pSB1C3 vector were treated with restriction enzymes. After that, the three gene were separately ligated to linear pSB1C3, and the ligation products were separately transformed into DH5α. Verification PCR was performed to select the positive clones. The positive strains were chosen to be cultured overnight and plasmids were extracted. After restriction enzyme digestion verification, the positive clones were sequenced.
 
 

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Nankai University
No.94 Weijin Road, Nankai District
Tianjin, P.R.China 300071