Reference: Ma B, et al. (2019) Significantly Enhanced Production of Patchoulol in Metabolically Engineered Saccharomyces cerevisiae. J Agric Food Chem 67(31):8590-8598

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Abstract


Patchoulol, a natural sesquiterpene compound, is widely used in perfumes and cosmetics. Several strategies were adopted to enhance patchoulol production in Saccharomyces cerevisiae: (i) farnesyl pyrophosphate (FPP) synthase and patchoulol synthase were fused to increase the utilization of FPP precursor; (ii) expression of the limiting genes of the mevalonate pathway was enhanced; (iii) squalene synthase was weakened by a glucose-inducible promoter of HXT1 (promoter for hexose transporter) to reduce metabolic flux from FPP to ergosterol; and (iv) farnesol biosynthesis was inhibited to decrease the consumption of FPP. Glucose was used to balance the trade-off between the competitive squalene and patchoulol pathways. The patchoulol production was 59.2 ± 0.7 mg/L in a shaken flask with a final production of 466.8 ± 12.3 mg/L (20.5 ± 0.5 mg/g dry cell weight) combined with fermentation optimization, which was 7.8-fold higher than the reported maximum production. The work significantly promoted the industrialization process of patchoulol production using biobased microbial platforms.

Reference Type
Journal Article
Authors
Ma B, Liu M, Li ZH, Tao X, Wei DZ, Wang FQ
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