申请人:Aomori prefecture
公开号:EP1947179A1
公开(公告)日:2008-07-23
The present invention provides a protein having the amino acid sequence as shown in SEQ ID NO: 2, 4, 6, 8, 10 or 12 or a protein having a modified amino acid sequence thereof and having an activity of transferring an aromatic acyl group to a sugar residue of a flavonoid; a gene, especially cDNA, encoding the protein; and use thereof For example, by introducing the above gene into a plant expressing hydroxycinnamate 1-O-glucosyltransferase gene, optionally together with a cDNA encoding a protein having the amino acid sequence as shown in SEQ ID NO: 14, 16 or 18 or a protein having an amino acid sequence derived therefrom by modification and having an activity of glucosylating a hydroxyl group at position 1 of hydroxycinnamic acid, and then expressing the introduced gene(s), it is possible to acylate the sugar residue of flavonoids in flowers of the plant to thereby confer a blue color on the flowers.
本发明提供了一种具有 SEQ ID NO:2、4、6、8、10 或 12 所示氨基酸序列的蛋白质,或其氨基酸序列经修饰并具有将芳香酰基转移到类黄酮的糖残基上的活性的蛋白质;编码该蛋白质的基因,特别是 cDNA;及其用途 例如,将上述基因导入表达羟基肉桂酸 1-O-葡萄糖基转移酶基因的植物中,任选与编码具有 SEQ ID NO:14、16 或 18 所示氨基酸序列的蛋白质,或其氨基酸序列经修饰后得到的具有羟基肉桂酸 1 位羟基葡萄糖基化活性的蛋白质,然后表达导入的基因,就可以使植物花朵中黄酮类化合物的糖残基酰化,从而使花朵呈现蓝色。