Coding

Part:BBa_K2933112

Designed by: Xueqing Fu   Group: iGEM19_TJUSLS_China   (2019-09-14)


GST+Linker+GIM-2

This part encodes the fusion protein of GST tag and GIM-2 to promote the expression and purification of target protein(GIM-2).

Sequence and Features


Assembly Compatibility:
  • 10
    INCOMPATIBLE WITH RFC[10]
    Illegal PstI site found at 1429
  • 12
    INCOMPATIBLE WITH RFC[12]
    Illegal PstI site found at 1429
  • 21
    COMPATIBLE WITH RFC[21]
  • 23
    INCOMPATIBLE WITH RFC[23]
    Illegal PstI site found at 1429
  • 25
    INCOMPATIBLE WITH RFC[25]
    Illegal PstI site found at 1429
  • 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 GIM-2. It encodes a protein which is GIM-2 fused with GST tag. The fusion protein is about 53.4 kD. In order to gain the highly purified target protein, we add GST tag in N-terminal of GIM-2 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 to construct our expression plasmid. And then we converted the plasmid constructed to E. coli DH5α to expand the plasmid largely.

GIM-2-PCR.jpeg GIM-2-veri.jpeg
Figure 1. Left: The result of PCR, Right:The result of double enzyme digestion verification

References

[1]Skagseth S , Akhter S , Paulsen M H , et al. Metallo-β-lactamase inhibitors by bioisosteric replacement: Preparation, activity and binding[J]. European Journal of Medicinal Chemistry, 2017, 135:159-173.

[2]Wendel AF, MacKenzie CR. 2015. Characterization of a novel metallo-lactamase variant, GIM-2, from a clinical isolate of Enterobacter cloacae in Germany. Antimicrob Agents Chemother 59:1824 –1825.

[3]Borra P S , Samuelsen O , Spencer J , et al. Crystal Structures of Pseudomonas aeruginosa GIM-1: Active-Site Plasticity in Metallo-beta-Lactamases[J]. Antimicrobial Agents and Chemotherapy, 2013, 57(2):848-854.

[4]Susann S, Trine J C, Gro Elin K B, James S, Ørjan S, Hanna-Kirsti S. L. Role of Residues W228 and Y233 in the Structure and Activity of Metallo-β-Lactamase GIM-1. Antimicrobial Agents and Chemotherapy Jan 2016, 60 (2) 990-1002

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