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    • 10. 发明授权
    • Glycosyltransferase gene
    • 糖基转移酶基因
    • US07514597B2
    • 2009-04-07
    • US10524842
    • 2003-08-20
    • Noriko NakamuraYuko FukuiEiichiro OnoYoshikazu TanakaHiroaki Okuhara
    • Noriko NakamuraYuko FukuiEiichiro OnoYoshikazu TanakaHiroaki Okuhara
    • C12N15/29C12N15/52C12N15/82A01H5/00
    • C12N15/8243C12N9/1048C12N15/825
    • The present invention provides an enzyme which catalyzes a reaction to transfer sugar to a hydroxyl group at position 2′ of chalcones and a gene thereof, and preferably an enzyme which catalyzes a reaction to transfer glucose to a hydroxyl group at position 2′ of the chalcones. Furthermore, the invention provides a plant whose flower color has been changed using the glycosyltransferase. Using probes corresponding to conservative regions of the glycosyltransferase, some tens of glycosyltransferase genes having nucleotide sequences corresponding to the conservative regions were cloned from flower petal cDNA libraries of carnation and the like. Furthermore, each of the glycosyltransferase genes was expressed in Escherichia coli, activity to transfer glucose to position 2′ of the chalcone, i.e., the glycosyltransferase activity at position 2′ of chalcone was confirmed in an extract solution of the Escherichia coli, and it was confirmed that cloned genes encoded the glycosyltransferase at position 2′.
    • 本发明提供了一种酶,其催化将糖转移到胡烷酮的2'位的羟基及其基因的反应,优选催化将葡萄糖转移至查尔酮2'位羟基的反应的酶 。 此外,本发明提供了使用糖基转移酶改变花色的植物。 使用与糖基转移酶保守区相对应的探针,从康乃馨花花瓣cDNA文库克隆了数十个具有与保守区相对应的核苷酸序列的糖基转移酶基因。 此外,每个糖基转移酶基因在大肠杆菌中表达,将葡萄糖转移到查耳酮的位置2'的活性,即在大肠杆菌的提取液中证实了查耳酮的2'位上的糖基转移酶活性, 证实克隆的基因在2'位编码糖基转移酶。