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Nat Commun. 2019 Sep 6;10(1):4055. doi: 10.1038/s41467-019-12025-8.

Polyunsaturated fatty acid production by Yarrowia lipolytica employing designed myxobacterial PUFA synthases.

Author information

1
Department of Microbial Natural Products, Helmholtz Institute for Pharmaceutical Research Saarland and Helmholtz Centre for Infection Research, Saarbrücken, Germany.
2
Institute for Systems Biotechnology, Saarland University, Saarbrücken, Germany.
3
ATG:biosynthetics GmbH, Merzhausen, Germany.
4
Department of Pharmacy, Saarland University, Saarbrücken, Germany.
5
Department of Microbial Natural Products, Helmholtz Institute for Pharmaceutical Research Saarland and Helmholtz Centre for Infection Research, Saarbrücken, Germany. Rolf.Mueller@helmholtz-hips.de.
6
Department of Pharmacy, Saarland University, Saarbrücken, Germany. Rolf.Mueller@helmholtz-hips.de.

Abstract

Long-chain polyunsaturated fatty acids (LC-PUFAs), particularly the omega-3 LC-PUFAs eicosapentaenoic acid (EPA), docosapentaenoic acid (DPA), and docosahexaenoic acid (DHA), have been associated with beneficial health effects. Consequently, sustainable sources have to be developed to meet the increasing demand for these PUFAs. Here, we demonstrate the design and construction of artificial PUFA biosynthetic gene clusters (BGCs) encoding polyketide synthase-like PUFA synthases from myxobacteria adapted for the oleaginous yeast Yarrowia lipolytica. Genomic integration and heterologous expression of unmodified or hybrid PUFA BGCs yielded different yeast strains with specific LC-PUFA production profiles at promising yield and thus valuable for the biotechnological production of distinct PUFAs. Nutrient screening revealed a strong enhancement of PUFA production, when cells were phosphate limited. This represents, to the best of our knowledge, highest concentration of DHA (16.8 %) in total fatty acids among all published PUFA-producing Y. lipolytica strains.

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