[Advances in sesquiterpene synthases cyclases of Artemisia annua].
Artemisinin,a new and a very potent antimalarial drug, is produced by the plant Artemisia annua L. with a very low yield ranging from 0.01% to 0.8% on a dry-weight basis. This makes artemisinin an expensive drug. Several studies reported chemical synthesis of the artemisinin, but none of them seems a viable economical alternative compared with the isolation of artemisinin from the plant. Hence, a higher artemisinin concentration in the plant is necessary for cheap antimalarial drug production. Many types of cyclic sesquiterpenes in Artemisia annua have been characterized to date, each derived from the common cyclic precursor FDP in a reaction catalyzed by a sesquiterpene synthase. Sesquiterpene synthases are widely regarded as the rate-determining regulatory enzymes in the pathways they participate, and a number of sesquiterpene synthases have been cloned from Artemisia annua up to now. This report is a brief review on the following sesquiterpene synthases: epi-cedrol synthase, amorpha-4,11-diene synthase, beta-caryophyllene synthase, (E)-beta-farnesene synthase, germacrene A synthase, as well as a new sesquiterpene synthase whose function remains largely unknown. The report is of help for a better understanding of metabolic engineering of Artemisia annua.
Shen
Hai-Yan
HY
Key Laboratory of Phytosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
Li
Zhen-Qiu
ZQ
Wang
Hong
H
Ma
Lan-Qing
LQ
Liu
Ben-Ye
BY
Yan
Fang
F
Li
Guo-Feng
GF
Ye
He-Chun
HC
D019883:Alkyl and Aryl Transferases / Q000096:biosynthesis / Q000235:genetics*; D000595:Amino Acid Sequence; D000962:Antimalarials; D031172:Artemisia annua / Q000201:enzymology* / Q000235:genetics; D037621:Artemisinins / Q000378:metabolism*; D019755:Carbon-Carbon Lyases / Q000096:biosynthesis / Q000235:genetics*; D003001:Cloning, Molecular; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D008969:Molecular Sequence Data; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000235:genetics; D012717:Sesquiterpenes / Q000302:isolation & purification
D000962:Antimalarials; D037621:Artemisinins; D011994:Recombinant Proteins; D012717:Sesquiterpenes; C031327:artemisinin; D019883:Alkyl and Aryl Transferases; C403714:amorpha-4,11-diene synthase; C511057:germacrene A synthase, Artemisia annua; D019755:Carbon-Carbon Lyases; C122071:8-epicedrol synthase