[EN] CONSTRUCTS AND METHODS FOR BIOSYNTHESIS OF GALANTHAMINE<br/>[FR] CONSTRUCTIONS ET PROCÉDÉS POUR LA BIOSYNTHÈSE DE LA GALANTHAMINE
申请人:DONALD DANFORTH PLANT SCI CT
公开号:WO2015196100A1
公开(公告)日:2015-12-23
The present disclosure relates generally to the identification of enzymes within the Amaryllidaceae alkaloid biosynthetic pathway as well as to engineering transgenic organisms for the production of galanthamine and/or hemanthamine and/or lycorine. Disclosed herein is the isolation and characterization of cDNAs and encoded norbelladine 4'-0-methyltransferase, CYP96T1-3, and norbelladine synthase/reductase involved in the biosynthesis of galanthamine and haemanthamine. The invention relates to a transgenic plant, comprising within its genome, and expressing, a heterologous nucleotide sequence coding for a class I O-methyltransferase, wherein the O-methyltransferase is norbelladine 4'-0-methyltransferase. In one embodiment, the norbelladine 4'-0-methyltransferase is selected from among NpN40MT1, NpN40MT2, NpN40MT3, NpN40MT4, and NpN40MT5. The invention further contemplates a method of making a transgenic plant.
本公开涉及总体上识别阿马里利达斯碱生物合成途径中的酶,以及为生产迎春碱和/或血红碱和/或石蒜碱而工程化转基因生物。本公开揭示了所述cDNA的分离和表征,以及编码的norbelladine 4'-0-甲基转移酶、CYP96T1-3和norbelladine合成酶/还原酶,这些酶参与了迎春碱和血红碱的生物合成。该发明涉及一种转基因植物,其基因组中包含并表达了编码I类O-甲基转移酶的异源核苷酸序列,其中O-甲基转移酶是norbelladine 4'-0-甲基转移酶。在一个实施例中,norbelladine 4'-0-甲基转移酶从NpN40MT1、NpN40MT2、NpN40MT3、NpN40MT4和NpN40MT5中选择。该发明进一步考虑了一种制备转基因植物的方法。