Difference between revisions of "Part:BBa K5248052"
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− | + | Design: | |
+ | In podocarp research, the 2023 XJTU-iGEM team has used pgmA and galU gene overexpression to enable an increase in extracellular polysaccharide (EPS) production, based on which we additionally introduced overexpression of KpsE, KpsT, and FliC genes, which are capable of increasing the rate of podocarp polysaccharide translocation from intracellular to extracellular, thus optimizing our podocarp level of Defense. | ||
+ | |||
+ | Construct: | ||
+ | The expression vector pETDuet-1-galU-pgmA was constructed, and the successfully constructed plasmid and its empty vector were introduced into Nissle 1917 (DE3) respectively. | ||
+ | |||
+ | <div style="text-align: center;"> | ||
+ | < img src="https://static.igem.wiki/teams/5248/experiment/petduet-1-galu-pgma-plasmid-mapping.png" style="display: block; margin: auto;width: 100%; "> | ||
+ | <div style="text-align: center;"> | ||
+ | <caption> | ||
+ | <b>Lane M: DNA Marker | ||
+ | Lane 1: Plasmid digested by EcoRV and XhoI | ||
+ | Lane 2: Uncut plasmid DNA </b> | ||
+ | </caption> | ||
+ | </div> | ||
+ | <p>Test: | ||
+ | We carried out bacterial pod polysaccharide extraction on the above modified bacteria and measured the content of the extracted polysaccharide, using the empty vector-imported bacteria as the control, as shown in Fig. 1, our constructed PgmA-GalU genetically engineered bacterium showed a significant increase in pod production compared with the empty vector-imported bacterium.</p> | ||
+ | </div> | ||
+ | |||
+ | <div style="text-align: center;"> | ||
+ | < img src="https://static.igem.wiki/teams/5248/experiment/pacycduet-1-kpse-kpst.png" style="display: block; margin: auto;width: 100%; "> | ||
+ | <div style="text-align: center;"> | ||
+ | <caption> | ||
+ | <b> pETDuet-1-galU-pgmA when cultured to OD600=0.6, expression was induced by the addition of 0.5 mM IPTG for 3 h, and the bacterial broth was diluted to 0.4 at OD600 </b> | ||
+ | </caption> | ||
+ | </div> | ||
+ | <p>Study: | ||
+ | As mentioned above, PgmA-GalU genes can effectively increase pod yield, in the future, we will introduce pgmA and galU into EcN together with KpsE and KpsT genes, meanwhile, considering the possible influence of expression vectors on the expression of exogenous genes in chassis bacteria, we propose the idea of integrating exogenous genes genetically into EcN genome in order to eliminate the effect of expression vectors on the strain.</p> | ||
+ | </div> | ||
<!-- Add more about the biology of this part here | <!-- Add more about the biology of this part here |
Revision as of 13:14, 2 October 2024
pETDuet-1-galU-pgmA
Design:
In podocarp research, the 2023 XJTU-iGEM team has used pgmA and galU gene overexpression to enable an increase in extracellular polysaccharide (EPS) production, based on which we additionally introduced overexpression of KpsE, KpsT, and FliC genes, which are capable of increasing the rate of podocarp polysaccharide translocation from intracellular to extracellular, thus optimizing our podocarp level of Defense.
Construct: The expression vector pETDuet-1-galU-pgmA was constructed, and the successfully constructed plasmid and its empty vector were introduced into Nissle 1917 (DE3) respectively.
< img src="" style="display: block; margin: auto;width: 100%; ">
Test: We carried out bacterial pod polysaccharide extraction on the above modified bacteria and measured the content of the extracted polysaccharide, using the empty vector-imported bacteria as the control, as shown in Fig. 1, our constructed PgmA-GalU genetically engineered bacterium showed a significant increase in pod production compared with the empty vector-imported bacterium.
< img src="" style="display: block; margin: auto;width: 100%; ">
Study: As mentioned above, PgmA-GalU genes can effectively increase pod yield, in the future, we will introduce pgmA and galU into EcN together with KpsE and KpsT genes, meanwhile, considering the possible influence of expression vectors on the expression of exogenous genes in chassis bacteria, we propose the idea of integrating exogenous genes genetically into EcN genome in order to eliminate the effect of expression vectors on the strain.
Sequence and Features
- 10INCOMPATIBLE WITH RFC[10]Illegal EcoRI site found at 166
- 12INCOMPATIBLE WITH RFC[12]Illegal EcoRI site found at 166
- 21INCOMPATIBLE WITH RFC[21]Illegal EcoRI site found at 166
Illegal BamHI site found at 559 - 23INCOMPATIBLE WITH RFC[23]Illegal EcoRI site found at 166
- 25INCOMPATIBLE WITH RFC[25]Illegal EcoRI site found at 166
- 1000COMPATIBLE WITH RFC[1000]