T
Toru Nakayama
Researcher at Tohoku University
Publications - 184
Citations - 5441
Toru Nakayama is an academic researcher from Tohoku University. The author has contributed to research in topics: Enzyme & Amino acid. The author has an hindex of 43, co-authored 176 publications receiving 4778 citations. Previous affiliations of Toru Nakayama include Kyoto University & University of Tennessee.
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Journal ArticleDOI
Aureusidin Synthase: A Polyphenol Oxidase Homolog Responsible for Flower Coloration
Toru Nakayama,Keiko Yonekura-Sakakibara,Takafumi Sato,S. Kikuchi,Yuko Fukui,Masako Fukuchi-Mizutani,Takashi Ueda,Masahiro Nakao,Yoshikazu Tanaka,Takaaki Kusumi,Tokuzo Nishino +10 more
TL;DR: DNA sequence analysis revealed that aureusidin synthase belongs to the plant polyphenol oxidase family, providing an unequivocal example of the function of the polyphenl oxidase homolog in plants, i.e., flower coloration.
Journal ArticleDOI
Yellow flowers generated by expression of the aurone biosynthetic pathway
Eiichiro Ono,Masako Fukuchi-Mizutani,Noriko Nakamura,Yuko Fukui,Keiko Yonekura-Sakakibara,Masa-atsu Yamaguchi,Toru Nakayama,Takaharu Tanaka,Takaaki Kusumi,Yoshikazu Tanaka +9 more
TL;DR: Chalcone 4'-O-glucosyltransferase (4'CGT) is essential for aurone biosynthesis and yellow coloration in vivo, and the findings herein open the way to engineering yellow flowers for major ornamental species lacking this color variant.
Journal ArticleDOI
Functional Differentiation of the Glycosyltransferases That Contribute to the Chemical Diversity of Bioactive Flavonol Glycosides in Grapevines (Vitis vinifera)
Eiichiro Ono,Yu Homma,Manabu Horikawa,Satoshi Kunikane-Doi,Haruna Imai,Seiji Takahashi,Yosuke Kawai,Masaji Ishiguro,Yuko Fukui,Toru Nakayama +9 more
TL;DR: The results presented here suggest that the sugar donor specificities of these Vv GTs could be determined by a limited number of amino acid substitutions in the primary structures of protein duplicates, illustrating the plasticity of plant glycosyltransferases in acquiring new sugar donor Specificities.
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Cold-active esterase from Psychrobacter sp. Ant300: gene cloning, characterization, and the effects of Gly→Pro substitution near the active site on its catalytic activity and stability
TL;DR: Observations could be explained in terms of a decrease in active-site flexibility brought about by the mutation and were consistent with the hypothesis that cold activity and thermolability arise from local flexibility around the active site of the enzyme.
Journal ArticleDOI
Local Differentiation of Sugar Donor Specificity of Flavonoid Glycosyltransferase in Lamiales
Akio Noguchi,Manabu Horikawa,Yuko Fukui,Masako Fukuchi-Mizutani,Asako Iuchi-Okada,Masaji Ishiguro,Yoshinobu Kiso,Toru Nakayama,Eiichiro Ono +8 more
TL;DR: The hypothesis that differentiation of sugar donor specificity of UGTs occurred locally, in specific plant lineages, after establishment of general regiospecificity for the sugar acceptor is supported.