Difference between revisions of "Part:BBa K2933105"

 
 
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<partinfo>BBa_K2933105 parameters</partinfo>
 
<partinfo>BBa_K2933105 parameters</partinfo>
 
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===Usage and Biology===
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This composite part is made up with three basic parts, the GST tag, the cutting site of Prescission Protease and our target protein SPG-1. It encodes a protein which is SPG-1 fused with GST tag. The fusion protein is about 56.2kD. In order to gain the highly purified target protein, we add GST tag in N-terminal of SPG-1 and combine the two parts with the cutting site of Prescission Protease. The fusion protein can be cut off at the cutting site by Prescission Protease. It is convenient for us to purify our target protein.<br>
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===Molecular cloning===
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First, 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.<br>
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<p style="text-align: center;">
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  [[File:SPG-PCR.png]]<br>
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'''Figure 1.'''  a: The PCR result of SPG. b: The verification results by enzyme digestion.<br>
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</p>
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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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===Expression and purification===
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'''Pre-expression:'''<br>
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The bacteria were cultured in 5mL LB liquid medium with ampicillin(100 μg/mL final concentration) in 37℃ overnight.<br>
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===References===
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[1]The Soil Microbiota Harbors a Diversity of Carbapenem-Hydrolyzing β-Lactamases of Potential Clinical Relevance. Gudeta DD, Bortolaia V, Amos G, Wellington EM, Brandt KK, Poirel L, Nielsen JB, Westh H, Guardabassi L. Antimicrob Agents Chemother. 2015 Oct 19;60(1):151-60.

Latest revision as of 12:43, 22 September 2019


GST+Linker+SPG-1

This part encodes the fusion protein of GST tag and SPG-1 to promote the expression and purification of target protein(SPG-1).

Sequence and Features


Assembly Compatibility:
  • 10
    COMPATIBLE WITH RFC[10]
  • 12
    COMPATIBLE WITH RFC[12]
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    COMPATIBLE WITH RFC[23]
  • 25
    COMPATIBLE WITH RFC[25]
  • 1000
    INCOMPATIBLE WITH RFC[1000]
    Illegal SapI.rc site found at 85


Usage and Biology

This composite part is made up with three basic parts, the GST tag, the cutting site of Prescission Protease and our target protein SPG-1. It encodes a protein which is SPG-1 fused with GST tag. The fusion protein is about 56.2kD. In order to gain the highly purified target protein, we add GST tag in N-terminal of SPG-1 and combine the two parts with the cutting site of Prescission Protease. The fusion protein can be cut off at the cutting site by Prescission Protease. It is convenient for us to purify our target protein.

Molecular cloning

First, 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.

SPG-PCR.png
Figure 1. a: The PCR result of SPG. b: The verification results by enzyme digestion.

After verification, it was determined that the construction is successful. We converted the plasmid to E. coli BL21(DE3) for expression and purification.

Expression and purification

Pre-expression:
The bacteria were cultured in 5mL LB liquid medium with ampicillin(100 μg/mL final concentration) in 37℃ overnight.

References

[1]The Soil Microbiota Harbors a Diversity of Carbapenem-Hydrolyzing β-Lactamases of Potential Clinical Relevance. Gudeta DD, Bortolaia V, Amos G, Wellington EM, Brandt KK, Poirel L, Nielsen JB, Westh H, Guardabassi L. Antimicrob Agents Chemother. 2015 Oct 19;60(1):151-60.