Regulatory

Part:BBa_K613003:Design

Designed by: Alessandro Ferrari, Vincent Zimmern, Nadine Guenat, Henrike Niederholtmeyer   Group: iGEM11_EPF-Lausanne   (2011-09-20)

The Making of T7 Promoter Variants (EPFL iGEM 2011)

Gene-Specific PCR

The first PCR that is used to build a full T7 promoter variant is called a "gene-specific" PCR. The primers are chosen so as to add a ribosome-binding site (rbs) upstream of the reporter gene (here RFP or Lysis) and a terminator downstream of the gene. It is in effect a typical PCR.

Rbs lys term.png

Rbs rfp term.png

Extension PCR: Part I

The PCR product from the gene-specific PCR becomes the DNA template for the second PCR, which is oftentimes called the "Extension PCR". To find out more about the protocol for this PCR, click here. This PCR adds the T7 promoter (or some variant thereof).

T7 rbs lysis term.png

T7 lac rbs lysis term.png

Extension PCR: Part II

In the second phase of the Extension PCR, Gibson overhangs are added to the endpieces of the PCR product of the previous Extension PCR. These Gibson overhangs will allow for the Gibson Assembly of this promoter construct into a plasmid.

Gibson t7 lac lysis gibson.png