Composite

Part:BBa_K3352007

Designed by: Joyce Ting   Group: iGEM20_TAS_Taipei   (2020-10-18)
Revision as of 16:03, 18 October 2020 by Registry (Talk | contribs)

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T7 + RBS Phi29 DNA Polymerase Expressing Construct

Construct Design

This construct was an improved design from our previous construct (BBa_K3352004). This construct consists of a T7 promoter (BBa_J64997), strong RBS, SplintR Ligase, and a downstream double terminator (BBa_BB0015).

PCR Results

Characterization

Seeing that purified Φ29 DNA Polymerase and SplintR Ligase are fundamental to the development of our diagnostic test, we attempted to resolve the issue by introducing a T7 promoter to our construct and expressing our protein with BL21 (DE3) E. coli. DE3 strains contain the chromosomal gene T7 RNA Polymerase which is regulated by a lac promoter. T7 RNA Polymerase has been found to be highly selective and efficient in transcribing only the T7 promoter. Resulting in almost a five-fold faster elongation rate that E. coli RNA Polymerase, T7 would be a much stronger promoter of choice. Thus, by using IPTG during protein synthesis of our BL21 (DE3) E. coli culture, we would effectively produce more T7 RNA Polymerase and significantly increase the production of our enzymes positioned downstream of our T7 promoter.


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 BsaI site found at 640
    Illegal SapI.rc site found at 1038


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