Difference between revisions of "Part:BBa K2933215"
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<partinfo>BBa_K2933215 parameters</partinfo>
 
<partinfo>BBa_K2933215 parameters</partinfo>
 
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==Usage and Biology===
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==Usage and Biology==
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This composite part is made up with three basic parts, the His tag, T7 promoter, RBS and our target protein BcII-194. It encodes a protein which is BcII-194 fused with His tag. The fusion protein is about 28.1 kD. In order to gain the highly purified target protein, we add His tag in N-terminal of BcII-194.  It is convenient for us to purify our target protein.<br>
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This composite part is made up with seven basic parts, the His tag, T7 promoter, RBS ，Linker h ，Linker f，T7 terminatorand and our target protein BcII-194. It encodes a protein which is BcII-194 fused with His tag.Linker h is from the vector pET-28a, which connects the RBS to His tag sequence.Linker f from vector pGEX-6p-1, contains the thrombin restriction site and T7 tag. The fusion protein is about 28.1 kD. In order to gain the highly purified target protein, we add His tag in N-terminal of BcII-194.  It is convenient for us to purify our target protein.<br>
 
===Molecular cloning===
 
===Molecular cloning===
  
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'''Figure 1.'''    The PCR result of BcII.<br>
 
'''Figure 1.'''    The PCR result of BcII.<br>
  
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Then we used the vector pGEX-6p-1 to construct our expression plasmid. And then we converted the plasmid constructed to ''E. coli'' DH5α to expand the plasmid largely.After verification, it was determined that the construction is successful. We converted the plasmid to ''E. coli'' BL21(DE3) for expression and purification.<br>
 
  
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[[File:BcII-194 6p.jpeg|200px|]]<br>
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'''Figure 2.'''  Left:The plasmid of BcII.Right:The verification results by enzyme digestion.<br>
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===Expression and purification===
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'''Exploration of expression condition:'''<br>
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Take monoclone in the culture plate into LB tube and cultivate in shaking incubator overnight(10-12h) to activate bacteria.
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Test the OD600 number of bacteria, then pipe 5-10ul into each new 5 mL LB tube. Don’t forget to add antibiotic into tubes and mark them.Cultivate in shaking incubator for 3-4 hours until the OD600 of bacteria range from 0.6 to 0.8.Set the gradient of condition to explore how to express it best.We use 0.2mM IPTG, 16°C/0.2mM IPTG, 37°C/0.4mM IPTG, 16°C/0.4mM IPTG, 37°C/0.6mM IPTG, 16°C/0.6mM IPTG, 37°C/0.8mM IPTG, 16°C/0.8mM IPTG, 37°Cas different conditions.<br>
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<p style="text-align: center;">
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  [[File:BcII.jpeg|200px|]]<br>
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</p>
 
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==References==
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Sung-Kun Kim, Mara Demuth, Sara R. Schlesinger, Sung Joon Kim, Jonathan Urbanczyk, Robert W. Shaw & Hyunshun Shin (2016) Inhibition of Bacillusanthracis metallo-β- lactamase by compounds with hydroxamic acid functionality, Journal of Enzyme Inhibition and Medicinal Chemistry, 31:sup4, 132-137, DOI: 10.1080/14756366.2016.1222580<br>

Latest revision as of 14:04, 23 September 2019


T7 promoter+RBS b+Linker h+His+Linker f+BCll-194+T7 terminator

This part consists of T7 promoter, RBS and protein coding sequence（His+Linker f+NDM-23），and the biological module can be built into E.coli for protein expression.


Sequence and Features


Assembly Compatibility:
  • 10
    INCOMPATIBLE WITH RFC[10]
    Illegal XbaI site found at 47
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal NheI site found at 169
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    INCOMPATIBLE WITH RFC[23]
    Illegal XbaI site found at 47
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal XbaI site found at 47
  • 1000
    COMPATIBLE WITH RFC[1000]


Usage and Biology

This composite part is made up with seven basic parts, the His tag, T7 promoter, RBS ，Linker h ，Linker f，T7 terminatorand and our target protein BcII-194. It encodes a protein which is BcII-194 fused with His tag.Linker h is from the vector pET-28a, which connects the RBS to His tag sequence.Linker f from vector pGEX-6p-1, contains the thrombin restriction site and T7 tag. The fusion protein is about 28.1 kD. In order to gain the highly purified target protein, we add His tag in N-terminal of BcII-194. It is convenient for us to purify our target protein.

Molecular cloning

First,we obtained BcII by PCR.

BcII-194 PCR.jpeg
Figure 1. The PCR result of BcII.

References

Sung-Kun Kim, Mara Demuth, Sara R. Schlesinger, Sung Joon Kim, Jonathan Urbanczyk, Robert W. Shaw & Hyunshun Shin (2016) Inhibition of Bacillusanthracis metallo-β- lactamase by compounds with hydroxamic acid functionality, Journal of Enzyme Inhibition and Medicinal Chemistry, 31:sup4, 132-137, DOI: 10.1080/14756366.2016.1222580