Linking Genotype and Phenotype of Yeast Strains for Better Triterpene Production
Author Information
Author(s): Madsen Karina M., Udatha Gupta D. B. R. K., Semba Saori, Otero Jose M., Koetter Peter, Nielsen Jens, Ebizuka Yutaka, Kushiro Tetsuo, Panagiotou Gianni
Primary Institution: Graduate School of Pharmaceutical Sciences, The University of Tokyo
Hypothesis
The non-synonymous SNPs in the Erg8, Erg9, and HFA1 genes are linked to the observed phenotype in CEN.PK, influencing the flux towards the two pathways for triterpene production.
Conclusion
The study successfully engineered a yeast strain that produces nearly 500% more β-amyrin than the control strain through the simultaneous over-expression of three key genes.
Supporting Evidence
- The study identified non-synonymous SNPs in key metabolic genes that correlate with increased triterpene production.
- Triple over-expression of Erg8, Erg9, and HFA1 resulted in a nearly 500% increase in β-amyrin production compared to the control strain.
- The engineered yeast strains showed significant improvements in ergosterol and β-amyrin production.
Takeaway
Scientists figured out how to make yeast produce a lot more of a special substance called β-amyrin by changing some of its genes.
Methodology
The study involved genome-wide sequencing of yeast strains, identification of SNPs, and construction of various gene over-expression strains to evaluate their effects on triterpene production.
Limitations
The findings should be evaluated with caution as no experimental verification was obtained for the last steps of the computational analysis.
Digital Object Identifier (DOI)
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