Difference between revisions of "Team:BNU-China/Proof"

Line 18: Line 18:
 
                  
 
                  
 
                 <figure class="text-center">
 
                 <figure class="text-center">
                   <img src="https://static.igem.org/mediawiki/2016/3/3b/T--BNU-China--Results9.jpg -- 20160808 PCR'.jpg" width="65%">
+
                   <img src="https://static.igem.org/mediawiki/2016/3/3b/T--BNU-China--Results9.jpg" width="65%">
 
                   <figcaption>
 
                   <figcaption>
 
                       Fig.1.1.1 electrophoresis result of α-tubulin, β-tubulin, n-luciferase, c-luciferase gene fragments
 
                       Fig.1.1.1 electrophoresis result of α-tubulin, β-tubulin, n-luciferase, c-luciferase gene fragments

Revision as of 19:01, 14 October 2016

Team:BNU-CHINA - 2016.igem.org

RESULTS

1. The expression of α-tubulin、β-tubulin、n-luciferase、c-luciferase

1.1 vector construction

Fig.1.1.1 electrophoresis result of α-tubulin, β-tubulin, n-luciferase, c-luciferase gene fragments

We got gene fragments of α-tubulin、β-tubulin、n-luciferase、c-luciferase via PCR and verified them by electrophoresis(fig.) The theoretic gene size of α-tubulin is 1356bp, β-tubulin is 1335bp, n-luciferase is 1248bp, c-luciferase is 459bp, which fit our experimental results.

We ligated our gene fragments to E.coli expression plasmid pET30a(+) and the sequencing result showed that we successfully constructed the α-tubulin, β-tubulin, n-luciferase, c-luciferase expression vectors.

Fig.1.1.2 electrophoresis result of α-tubulin、β-tubulin、n-luciferase、c-luciferase expression vectors
(A. electrophoresis result of colony PCR. The arrows show the correct size of target fragments使用α-tubulin、β-tubulin、n-luciferase、c-luciferase的引物对导入构建好的表达载体的质粒扩增性大肠杆菌菌株Tran5α进行菌落PCR,箭头指出的是大小正确的条带; B.重新构建β-tubulin的载体,导入Tran5α后挑取单菌落提取质粒,并使用β-tubulin的引物对提取的质粒进行PCR验证,箭头指出的是大小正确的条带。)

We transformed the expression vectors to E.coli expression strain TranB(DE3). After culturing and inducing with IPTG, we lysed the bacteria and used SDS-PAGE/ western-blot to test the protein from the bacteria supernatant, pellet and the renatured inclusion body.

Fig.1.1.3 SDS-PAGE result of β-tubulin
left to right: non-induced group, control, induced group. arrow shows the correct molecular weight of target protein)

Apart from this, we also transformed plasmids to Rosetta(DE3) which can express rare codons and improve the expression level of eukaryotic protein.

Based on the results, α-tubulin and β-tubulin were successfully expressed in cell.

We collaborated with Fujian Agriculture and Forest University and asked them to test the interaction between α and β-tubulin. Thus verified the activity of tubulin monomers.

这里放发福的结果

2. The expression of fusion protein