Abstract
Monoterpene geraniol, a compound obtained from aromatic plants, has wide applications. In this study, geraniol was synthesized in Saccharomyces cerevisiae through the introduction of geraniol synthase. To increase geraniol production, the mevalonate pathway in S. cerevisiae was genetically manipulated to enhance the supply of geranyl diphosphate, a substrate used for the biosynthesis of geraniol. Identification and optimization of the key regulatory points in the mevalonate pathway in S. cerevisiae increased geraniol production to 36.04mgL−1. The results obtained revealed that the IDI1-encoded isopentenyl diphosphate isomerase is a rate-limiting enzyme in the biosynthesis of geraniol in S. cerevisiae, and overexpression of MAF1, a negative regulator in tRNA biosynthesis, is another effective method to increase geraniol production in S. cerevisiae.
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