Part:BBa_K2933214
T7 promoter+RBS b+Linker h+His+Linker f+SHD+T7 terminator
This part consists of T7 promoter, RBS and protein coding sequence（His+Linker f+SHD），and the biological module can be built into E.coli for protein expression
Sequence and Features
- 10INCOMPATIBLE WITH RFC[10]Illegal XbaI site found at 47
- 12INCOMPATIBLE WITH RFC[12]Illegal NheI site found at 169
- 21COMPATIBLE WITH RFC[21]
- 23INCOMPATIBLE WITH RFC[23]Illegal XbaI site found at 47
- 25INCOMPATIBLE WITH RFC[25]Illegal XbaI site found at 47
- 1000COMPATIBLE 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 SHD. It encodes a protein which is SHD 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 29.0 kD. In order to gain the highly purified target protein, we add His tag in N-terminal of SHD . It is convenient for us to purify our target protein.
Molecular cloning
First, we used the vector pGEX-28a to construct our expression plasmid. And then we converted the plasmid constructed to E. coli DH5α to expand the plasmid largely.
Figure 1. The PCR result of SHD.
After verification, it was determined that the construction is successful. We converted the plasmid to E. coli BL21(DE3) for expression and purification.
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