A modular two yeast species secretion system for the production and preparative application of unspecific peroxygenases
Open Access
- 12 May 2021
- journal article
- research article
- Published by Springer Science and Business Media LLC in Communications Biology
- Vol. 4 (1), 1-20
- https://doi.org/10.1038/s42003-021-02076-3
Abstract
Fungal unspecific peroxygenases (UPOs) represent an enzyme class catalysing versatile oxyfunctionalisation reactions on a broad substrate scope. They are occurring as secreted, glycosylated proteins bearing a haem-thiolate active site and rely on hydrogen peroxide as the oxygen source. However, their heterologous production in a fast-growing organism suitable for high throughput screening has only succeeded once-enabled by an intensive directed evolution campaign. We developed and applied a modular Golden Gate-based secretion system, allowing the first production of four active UPOs in yeast, their one-step purification and application in an enantioselective conversion on a preparative scale. The Golden Gate setup was designed to be universally applicable and consists of the three module types: i) signal peptides for secretion, ii) UPO genes, and iii) protein tags for purification and split-GFP detection. The modular episomal system is suitable for use in Saccharomyces cerevisiae and was transferred to episomal and chromosomally integrated expression cassettes in Pichia pastoris. Shake flask productions in Pichia pastoris yielded up to 24mg/L secreted UPO enzyme, which was employed for the preparative scale conversion of a phenethylamine derivative reaching 98.6 % ee. Our results demonstrate a rapid, modular yeast secretion workflow of UPOs yielding preparative scale enantioselective biotransformations. Pullmann et al developed a modular Golden Gate-based secretion system, which enabled production and one-step purification of active fungal unspecific peroxygenases (UPOs) in yeast. Their system was applied to an enantioselective conversion on a preparative scale and may be used in the future for other genes of interest that are suitable for production in yeast.Funding Information
- Leibniz Research Cluster
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