Part:BBa_K2030001
pPCK1 S. cerevisiae promoter
The upstream regulatory sequence to the gene PCK1, coding for Phosphoenolpyruvate carboxykinase. This promoter is induced by glycerol, acetate and ethanol (10x) [1].
Characterization
A promoter study was performed to characterize this promoter. The PCK1 promoter cloned into the replicative plasmid p416tef by replacing the existing pTEF1 promoter and adding GFP as a reporter gene. For the glucose conditions, the cells were grown in SD -URA + 2 % glucose media. The expression of GFP was measured using a plate reader with triplicate samples. The cells were also grown in SD -URA + 0.5 % acetate to compare the expression levels when acetate was the only carbon source, which is connected to our coculture project.
The experiment was also done with the promoters pAQR1, pGLN1, pPYCK2 and pTEF1 in the same way, and the results compared against each other. The raw data from the promoter study was normalized against OD600 of that value, and the mean value of the negative control (cells with p416tef without GFP) was subtracted. In figure 2, the data is normalized against the expression of the pTEF1 promoter.
Figure 1. Expression levels of the promoters pAQR1, pGLN1, pPCK1, PYK2 and pTEF1 in glucose and acetate conditions. Error bar are shown as confidence intervals with p=0.05, using students t-test.
Sequence and Features
- 10COMPATIBLE WITH RFC[10]
- 12COMPATIBLE WITH RFC[12]
- 21INCOMPATIBLE WITH RFC[21]Illegal BglII site found at 221
- 23COMPATIBLE WITH RFC[23]
- 25INCOMPATIBLE WITH RFC[25]Illegal NgoMIV site found at 364
- 1000COMPATIBLE WITH RFC[1000]
References
[1] K. Weinhandl, M. Winkler, A. Glieder, and A. Camattari, “Carbon source dependent promoters in yeasts,” Microbial Cell Factories, vol. 13, no. 1, 2014.
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