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Arabidopsis ent-Kaurene Oxidase Catalyzes Three Steps of Gibberellin Biosynthesis
Author(s) -
Chris A. Helliwell,
Andrew T. Poole,
W. James Peacock,
Elizabeth S. Dennis
Publication year - 1999
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.119.2.507
Subject(s) - arabidopsis , gibberellin , yeast , biosynthesis , biochemistry , oxidase test , saccharomyces cerevisiae , enzyme , complementary dna , chemistry , biology , gene , botany , mutant
The Arabidopsis GA3 cDNA was expressed in yeast (Saccharomyces cerevisiae) and the ability of the transformed yeast cells to metabolize ent-kaurene was tested. We show by full-scan gas chromatography-mass spectrometry that the transformed cells produce ent-kaurenoic acid, and demonstrate that the single enzyme GA3 (ent-kaurene oxidase) catalyzes the three steps of gibberellin biosynthesis from ent-kaurene to ent-kaurenoic acid.

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