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| 1. Double enzyme digestion of circuit with RBS_B0034_gene_<i>ldh</i> and RBS_B0034_gene_<i>fdh</i>.</br> | | 1. Double enzyme digestion of circuit with RBS_B0034_gene_<i>ldh</i> and RBS_B0034_gene_<i>fdh</i>.</br> |
| 2. Electrophoresis analysis of double digested result</br></p> | | 2. Electrophoresis analysis of double digested result</br></p> |
− | <img style="width: 30%; margin-right: 70%; margin-top: 10px; margin-bottom: 0px;" src="https://static.igem.org/mediawiki/2015/1/1f/Amoy-Notebook_Node32_figure1.jpg" /> | + | <img style="width: 30%; margin-right: 70%; margin-top: 10px; margin-bottom: 0px;" src="https://static.igem.org/mediawiki/2015/5/51/Amoy-Notebook_Node12_figure1.png" /> |
| <p class="detail_p"></br> | | <p class="detail_p"></br> |
| 3. Extract double digested product</br> | | 3. Extract double digested product</br> |
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| 7. Extract the plasmids</br> | | 7. Extract the plasmids</br> |
| 8. Electrophoresis analysis of plasmids</br></p> | | 8. Electrophoresis analysis of plasmids</br></p> |
− | <img style="width: 30%; margin-right: 70%; margin-top: 10px; margin-bottom: 0px;" src="https://static.igem.org/mediawiki/2015/7/7a/Amoy-Notebook_node12-3.jpeg" /> | + | <img style="width: 30%; margin-right: 70%; margin-top: 10px; margin-bottom: 0px;" src="https://static.igem.org/mediawiki/2015/4/4e/Amoy-Notebook_Node12_figure3.png" /> |
| <p class="detail_p"></br> | | <p class="detail_p"></br> |
| 9. Verify the results by double enzyme digestion</br></p> | | 9. Verify the results by double enzyme digestion</br></p> |
− | <img style="width: 30%; margin-right: 70%; margin-top: 10px; margin-bottom: 0px;" src="https://static.igem.org/mediawiki/2015/2/2d/Amoy-Notebook_node12-4.jpeg" /> | + | <img style="width: 30%; margin-right: 70%; margin-top: 10px; margin-bottom: 0px;" src="https://static.igem.org/mediawiki/2015/9/9f/Amoy-Notebook_Node12_figure4.png" /> |
| <p class="detail_h1">Product:</br></p> | | <p class="detail_h1">Product:</br></p> |
| <p class="detail_p">final circuit of RBS_B0034</br></br></br></p> | | <p class="detail_p">final circuit of RBS_B0034</br></br></br></p> |
Purpose:
Ligation of isolated circuit with RBS_B0032 and gene_leudh
Steps:
1. Double enzyme digestion of LacI_B0032 and LeuDH_T
2. Electrophoresis analysis of double digested result
3. Extract double digested product
4. Link gene with terminator under 16℃ for 8 hours
5. Link gene with terminator under 16℃ for 8 hours
6. Transformation
7. Pick 8 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of chloramphenicol
8. Extract the plasmids
9. Electrophoresis analysis of plasmids
Product:
Isolated circuit with RBS_B0032 and gene_leudh
Purpose:
make connection of isolated circuit with RBS_B0032 and gene_ldh
Steps:
1. Double enzyme digestion of LacI_B0032 and LeuDH_T
2. Electrophoresis analysis of double digested result
3. Extract double digested product
4. Link gene with terminator under 16℃ for 8 hours
5. Link gene with terminator under 16℃ for 8 hours
6. Transformation
7. Pick 8 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of chloramphenicol
8. Extract the plasmids
9. Electrophoresis analysis of plasmids
Product:
isolated circuit with RBS_B0032 and gene_ldh
Purpose:
make connection of isolated circuit with RBS_B0032 and gene_ldh
Steps:
1. Double enzyme digestion of LacI_B0032 and LeuDH_T
2. Electrophoresis analysis of double digested result
3. Extract double digested product
4. Link gene with terminator under 16℃ for 8 hours
5. Link gene with terminator under 16℃ for 8 hours
6. Transformation
7. Pick 8 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of chloramphenicol
8. Extract the plasmids
9. Electrophoresis analysis of plasmids
Product:
isolated circuit with RBS_B0032 and gene_ldh
Purpose:
make connection of isolated circuit with RBS_B0032 and gene_ldh
Steps:
1. Double enzyme digestion of LacI_B0032 and LeuDH_T
2. Electrophoresis analysis of double digested result
3. Extract double digested product
4. Link gene with terminator under 16℃ for 8 hours
5. Link gene with terminator under 16℃ for 8 hours
6. Transformation
7. Pick 8 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of chloramphenicol
8. Extract the plasmids
9. Electrophoresis analysis of plasmids
Product:
isolated circuit with RBS_B0032 and gene_ldh
Purpose:
Ligation of promoter and RBS_B0032
Steps:
1. Double enzyme digestion of Plac and RBS_B0032
2. Electrophoresis analysis of double digested result of plasmid
3. Extract double digested promoter LacI
4. Cycle purity of digested rbs_B0032
5. Link promoter with rbs under 16℃ for 8 hours
6. transformation
7. Pick 10 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of amp
8. Extract the plasmids
9. Electrophoresis analysis of plasmids
Product:
Plasmid of LacI linked with RBS_B0032
Purpose:
Ligation of the final circuit with RBS_B0032
Steps:
1. Double enzyme digestion of circuits with RBS_B0032_gene_ldh and RBS_B0034_gene_fdh.
2. Electrophoresis analysis of double digested result.
3. Extract double digested product
4. Ligate under 16℃ for 8 hours
5. Transformation
6. Pick 8 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of chloramphenicol. Culture at 37℃,200rpm for 12~14 hours.
7. Extract the plasmids
8. Electrophoresis analysis of plasmids
9. Verify the results by double enzyme digestion
Product:
final circuit of RBS_B0032
Purpose:
Ligation of the final circuit with RBS_B0034
Steps:
1. Double enzyme digestion of circuit with RBS_B0034_gene_ldh and RBS_B0034_gene_fdh.
2. Electrophoresis analysis of double digested result
3. Extract double digested product
4. Ligate under 16℃ for 8 hours
5. Transformation
6. Pick 8 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of chloramphenicol. Culture at 37℃,200rpm for 12~14 hours.
7. Extract the plasmids
8. Electrophoresis analysis of plasmids
9. Verify the results by double enzyme digestion
Product:
final circuit of RBS_B0034
Purpose:
Ligation of the final circuit with RBS_B0030
Steps:
1. Double enzyme digestion of circuit with RBS_B0030_gene_ldh and RBS_B0034_gene_fdh.
2. Electrophoresis analysis of double digested result
3. Extract double digested product
4. Ligate under 16℃ for 8 hours
5. Transformation
6. Pick 8 single colonies from the agar plate using sterile pipette tips. Put it into 10ml LB of chloramphenicol. Culture at 37℃,200rpm for 12~14 hours.
7. Extract the plasmids
8. Electrophoresis analysis of plasmids
9. Verify the results by double enzyme digestion
Product:
Final circuit of RBS_B0030
NOTEBOOK
Initially, they used isolated enzymes, which can be disadvantageous for the reason that enzymes are always destabilized in the isolation and purification process. What's more, the cofactor-NADH is rather an expensive raw material, which will enhance the cost of L-tert-leucine production. So scientists introduced whole-cell biocatalysts to L-tert-leucine production. Whole-cell biocatalysts could stabilize enzymes and reduce the addition level of cofactor NADH.
In the path of building our biobricks, we divided the circuits into two modules. One is promoter linked with rbs and the other is gene linked with terminator. The dendrogram below is our experiments detail. Click each bottom for more information.