Reference: Song J, et al. (2023) A Layered Genetic Design Enables the Yeast Galactose Regulon to Respond to Cyanamide. ACS Synth Biol 12(9):2783-2788

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Abstract


The commonly used expression systems in Saccharomyces cerevisiae typically rely on either constitutive or galactose-regulated promoters. The lack of inducible systems in S. cerevisiae limits the precise temporal regulation of protein function and yeast metabolism. We herein repurposed the galactose-regulated system to make it respond to cyanamide. By using a cyanamide-inducible DDI2 promoter to control Gal4 expression in CEN.PK2-1C with Δgal80, a tight and graded cyanamide-inducible GAL system with an enhanced signal output was constructed. Subsequently, we demonstrated that the cyanamide-inducible GAL system was capable of tightly regulating the pentafunctional Aro1 protein to achieve conditional shikimate pathway activity. Taken together, the cyanamide-inducible GAL system could be implemented for both fundamental research and applied biotechnology.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Song J, Fan J, Fan C, He N, Ye X, Cao M, Yuan J
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