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Modulation of gene expression by cocktail δ-integration to improve carotenoid production in Saccharomyces cerevisiae.

08:00 EDT 15th August 2018 | BioPortfolio

Summary of "Modulation of gene expression by cocktail δ-integration to improve carotenoid production in Saccharomyces cerevisiae."

Carotenoids, including β-carotene, are commercially valuable compounds, and their production by engineered Saccharomyces cerevisiae is a promising strategy for their industrial production. Here, to improve β-carotene productivity in engineered S. cerevisiae, a cocktail δ-integration strategy, which involves simultaneous integration of various multi-copy genes, followed by selection of desirable transformants, was applied for modulation of β-carotene production-related genes expression. The engineered strain, YPH499/Mo3Crt79, was constructed by three repeated rounds of cocktail δ-integration using CrtE, CrtYB, and CrtI derived from the yeast, Xanthophyllomyces dendrorhous. The recombinant strain produced 7.3 mg/L of carotenoids in 48 h and 52.3 mg/L of β-carotene in 96 h, which were greater values than those achieved by CrtE, CrtYB, and CrtI co-overexpressing strains. Therefore, repeated cocktail δ-integration was effective in improving carotenoid productivity in S. cerevisiae and could be a promising technique for constructing metabolically engineered S. cerevisiae capable of producing bio-based chemicals.

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This article was published in the following journal.

Name: Bioresource technology
ISSN: 1873-2976
Pages: 616-621

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Medical and Biotech [MESH] Definitions

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