Dihydroartemisinic acid dehydrogenase-mediated alternative route for artemisinin biosynthesis

Zizheng Guo, Ying Zhou, Jiangqi Li, Liu De, Yuwen Huang, Yu Zhang, Rongmin Yu () and Jianhua Zhu ()
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Zizheng Guo: Jinan University
Ying Zhou: Jinan University
Jiangqi Li: Jinan University
Liu De: Jinan University
Yuwen Huang: Jinan University
Yu Zhang: Jinan University
Rongmin Yu: Jinan University
Jianhua Zhu: Jinan University

Nature Communications, 2025, vol. 16, issue 1, 1-16

Abstract: Abstract Dihydroartemisinic acid (DHAA) converts into antimalarial drug artemisinin (ART) by auto-oxidation. High production of artemisinic acid (AA) has been achieved by fermentation of engineered Saccharomyces cerevisiae, and AA can be converted into ART through DHAA by chemical synthesis. However, there is no enzyme reported to catalyze the conversion of AA to DHAA. Here, we report a dihydroartemisinic acid dehydrogenase (AaDHAADH) from Artemisia annua L, which catalyzes the bidirectional conversion between AA and DHAA. An optimized mutant AaDHAADH (P26L) is obtained through site-directed mutagenesis and its activity toward AA is 2.82 times that of the original gene. De novo synthesis of DHAA is achieved in S. cerevisiae using the targeted optimized gene AaDHAADH (P26L). Furthermore, 3.97 g/L of DHAA is obtained by fermentation of engineered S. cerevisiae in 5 L bioreactor. The discovery of AaDHAADH provides a more convenient and efficient alternative route for ART biosynthesis.

Date: 2025
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DOI: 10.1038/s41467-025-59312-1

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