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Muangphrom P, Misaki M, Suzuki M, Shimomura M, Suzuki H, Seki H, Muranaka T. Identification and characterization of (+)-α-bisabolol and 7-epi-silphiperfol-5-ene synthases from Artemisia abrotanum. PHYTOCHEMISTRY 2019; 164:144-153. [PMID: 31151061 DOI: 10.1016/j.phytochem.2019.05.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 04/30/2019] [Accepted: 05/10/2019] [Indexed: 06/09/2023]
Abstract
Triquinane is a type of sesquiterpenoid with a unique structure that contains a fused tricyclopentane ring and exhibits a wide range of bioactivities. Like other sesquiterpenoids, the first committed step in triquinane-type sesquiterpenoid biosynthesis is the cyclization of farnesyl pyrophosphate (FPP), a common precursor of all sesquiterpenoids, catalyzed by sesquiterpene synthase. Artemisia abrotanum L. (Asteraceae), a common plant used in the culinary and cosmetics industries, has been reported to accumulate high levels of triquinane silphiperfol-5-en-3-one A. This compound is potentially biosynthesized from the cyclization of FPP into 7-epi-silphiperfol-5-ene followed by a multi-step oxidation to silphiperfol-5-en-3-one A. In this study, we aimed to identify the sesquiterpene synthase responsible for the synthesis of 7-epi-silphiperfol-5-ene. We performed RNA sequencing of A. abrotanum leaves and gene candidates were mined by homology searches using the triquinane α-isocomene synthase of chamomile (MrTPS2) as query. After gene cloning, we obtained five variants of putative sesquiterpene synthase showing greater than 85% amino acid identity to MrTPS2 and greater than 95% amino acid identity to each other. Heterologous expression of these variants in a FPP-high-producing yeast strain revealed the first four variants to be (+)-α-bisabolol synthases (AabrBOS1-4). However, the fifth candidate cyclized FPP into 7-epi-silphiperfol-5-ene and can therefore be defined as a 7-epi-silphiperfol-5-ene synthase (AabrSPS). These findings revealed the first committed enzyme involved in silphiperfol-5-en-3-one A and (+)-α-bisabolol biosyntheses in A. abrotanum. Furthermore, the results of this study will be useful for enhancing the production of these compounds for further applications.
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Affiliation(s)
- Paskorn Muangphrom
- Department of Biotechnology, Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Momoka Misaki
- Department of Biotechnology, Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Munenori Suzuki
- Department of Biotechnology, Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan; KNC Laboratories Co., Ltd., 3-2-34 Takatsukadai, Nishi-ku, Kobe, Hyogo, 651-2271, Japan; Kihara Institute for Biological Research, Yokohama City University 641-12 Maioka-cho, Totsuka-ku, Yokohama, Kanagawa, 244-0813, Japan
| | - Masaya Shimomura
- Kihara Institute for Biological Research, Yokohama City University 641-12 Maioka-cho, Totsuka-ku, Yokohama, Kanagawa, 244-0813, Japan
| | - Hideyuki Suzuki
- Department of Applied Genomics, Kazusa DNA Research Institute, 2-6-7 Kazusa-kamatari, Kisarazu, Chiba, 292-0818, Japan
| | - Hikaru Seki
- Department of Biotechnology, Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan; Kihara Institute for Biological Research, Yokohama City University 641-12 Maioka-cho, Totsuka-ku, Yokohama, Kanagawa, 244-0813, Japan.
| | - Toshiya Muranaka
- Department of Biotechnology, Graduate School of Engineering, Osaka University 2-1 Yamadaoka, Suita, Osaka, 565-0871, Japan; Kihara Institute for Biological Research, Yokohama City University 641-12 Maioka-cho, Totsuka-ku, Yokohama, Kanagawa, 244-0813, Japan
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Li Y, Meng Y, Meng X, Li Z. Stereoselective synthesis of polyoxygenated linear diaza-triquinanes via intramolecular 1,3-dipolar cycloaddition of sugar-derived hex-5-enals. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.04.031] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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