TY - JOUR
T1 - Aureusidin synthase
T2 - A polyphenol oxidase homolog responsible for flower coloration
AU - Nakayama, T.
AU - Yonekura-Sakakibara, K.
AU - Sato, T.
AU - Kikuchi, S.
AU - Fukui, Y.
AU - Fukuchi-Mizutani, M.
AU - Ueda, T.
AU - Nakao, M.
AU - Tanaka, Y.
AU - Kusumi, T.
AU - Nishino, T.
PY - 2000/11/10
Y1 - 2000/11/10
N2 - Aurones are plant flavonoids that provide yellow color to the flowers of some popular ornamental plants, such as snapdragon and cosmos. In this study, we have identified an enzyme responsible for the synthesis of aurone from chalcones in the yellow snapdragon flower. The enzyme (aureusidin synthase) is a 39-kilodalton, copper-containing glycoprotein catalyzing the hydroxylation and/or oxidative cyclization of the precursor chalcones, 2',4',6',4-tetrahydroxychalcone and 2',4',6',3,4-pentahydroxychalcone. The complementary DNA encoding aureusidin synthase is expressed in the petals of aurone-containing varieties. DNA sequence analysis revealed that aureusidin synthase belongs to the plant polyphenol oxidase family, providing an unequivocal example of the function of the polyphenol oxidase homolog in plants, i.e., flower coloration.
AB - Aurones are plant flavonoids that provide yellow color to the flowers of some popular ornamental plants, such as snapdragon and cosmos. In this study, we have identified an enzyme responsible for the synthesis of aurone from chalcones in the yellow snapdragon flower. The enzyme (aureusidin synthase) is a 39-kilodalton, copper-containing glycoprotein catalyzing the hydroxylation and/or oxidative cyclization of the precursor chalcones, 2',4',6',4-tetrahydroxychalcone and 2',4',6',3,4-pentahydroxychalcone. The complementary DNA encoding aureusidin synthase is expressed in the petals of aurone-containing varieties. DNA sequence analysis revealed that aureusidin synthase belongs to the plant polyphenol oxidase family, providing an unequivocal example of the function of the polyphenol oxidase homolog in plants, i.e., flower coloration.
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U2 - 10.1126/science.290.5494.1163
DO - 10.1126/science.290.5494.1163
M3 - Article
C2 - 11073455
AN - SCOPUS:0034634339
SN - 0036-8075
VL - 290
SP - 1163
EP - 1166
JO - Science
JF - Science
IS - 5494
ER -