S
Shin-ichi Ayabe
Researcher at Nihon University
Publications - 70
Citations - 2997
Shin-ichi Ayabe is an academic researcher from Nihon University. The author has contributed to research in topics: Glycyrrhiza echinata & Lotus japonicus. The author has an hindex of 30, co-authored 69 publications receiving 2727 citations. Previous affiliations of Shin-ichi Ayabe include Tokyo Medical and Dental University.
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Journal ArticleDOI
Flavonoids of leguminous plants: structure, biological activity, and biosynthesis.
TL;DR: The chemical structure, biological activity, and biosynthesis of leguminous flavonoids are reviewed and recent achievements in the identification and characterization of cytochrome P450 monooxygenases, which play important roles in (iso) flavonoid biosynthesis, are introduced.
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Cloning and Functional Expression of a Cytochrome P450 cDNA Encoding 2-Hydroxyisoflavanone Synthase Involved in Biosynthesis of the Isoflavonoid Skeleton in Licorice
TL;DR: CYP93C2 was shown to encode 2-hydroxyisoflavanone synthase, which catalyzes the hydroxylation associated with 1,2-aryl migration of flavanones, which plays a key role in the biosynthesis of isoflavonoids.
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A cluster of genes encodes the two types of chalcone isomerase involved in the biosynthesis of general flavonoids and legume-specific 5-deoxy(iso)flavonoids in Lotus japonicus.
TL;DR: It was suggested that type II CHIs evolved from an ancestral CHI by gene duplication and began to produce 5-deoxy(iso)flavonoids along with the establishment of the Fabaceae.
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Molecular and biochemical characterization of 2-hydroxyisoflavanone dehydratase. Involvement of carboxylesterase-like proteins in leguminous isoflavone biosynthesis.
TL;DR: The findings represent a new example of recruitment of enzymes of primary metabolism during the molecular evolution of plant secondary metabolism and the characteristic oxyanion hole and catalytic triad are essential for the dehydratase as well as the faint esterase activities.
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Molecular Cloning and Characterization of a cDNA for Pterocarpan 4-Dimethylallyltransferase Catalyzing the Key Prenylation Step in the Biosynthesis of Glyceollin, a Soybean Phytoalexin
TL;DR: The first identification of a pterocarpan-specific prenyltransferase provides new insights into plant secondary metabolism and in particular those reactions involved in the disease resistance mechanism of soybean as the penultimate gene of glyceollin biosynthesis.