The
(2S)-naringenin is an important natural flavonoid
with several bioactive effects on human health. It is also a key precursor
in the biosynthesis of other high value compounds. The production
of (2S)-naringenin is significantly influenced by the acetyl-CoA available
in the cytosol. In this study, we increased the acetyl-CoA supply
via the β-oxidation of fatty acids in the peroxisomes of Saccharomyces cerevisiae. Several lipases from different
sources and PEX11, FOX1, FOX2, and FOX3, the key genes of the fatty
acid β-oxidation pathway, were overexpressed during the production
of (2S)-naringenin in yeast. The level of acetyl-CoA
was 0.205 nmol higher than that in the original strain and the production
of (2S)-naringenin increased to 286.62 mg/g dry cell
weight when PEX11 was overexpressed in S.
cerevisiae strain L07. Remarkable (2S)-naringenin
production (1129.44 mg/L) was achieved with fed-batch fermentation,
with the highest titer reported in any microorganism. Our results
demonstrated the use of fatty acid β-oxidation to increase the
level of cytoplasmic acetyl-CoA and the production of its derivatives.
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