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    • 9. 发明申请
    • DNA STRANDS ENCODING GLYCEROL-3-PHOSPHATE ACYLTRANSFERASE
    • 编码甘油-3-磷酸酯酶的DNA结构
    • WO1997005246A1
    • 1997-02-13
    • PCT/JP1996001844
    • 1996-07-03
    • KIRIN BEER KABUSHIKI KAISHAFERRI, StefanoTOGURI, Toshihiro
    • KIRIN BEER KABUSHIKI KAISHA
    • C12N15/00
    • C12N9/1029C12N15/8247C12N15/8273
    • Techniques relating to DNA strands having a bioengineering productivity of glycerol-3-phosphate acyltransferase (ATase) which is useful in the conversion of a membrane lipid PG into one having improved cold resistance, more particularly, a chimeric gene wherein the central region (about 1/3; cleaved with Kpn I and Hind III) of glycerol-3-phosphate ATase cDNA originating in pumpkin has been replaced by the corresponding region of spinach ATase cDNA; a chimeric gene wherein the central region (about 1/6; cleaved with Hind III Sac I) of cDNA originating in pumpkin has been replaced by cDNA originating in spinach; or a chimeric gene wherein the 3'-terminal region (about 1/3; cleaved with Kpn I and Eco RI) of cDNA of ATase originating in spinach has been replaced by the corresponding region of cDNA of pumpkin ATase. Such chimeric genes can express a chimeric ATase having an enhanced substrate-specificity for unsaturated fatty acids. When this DNA strand is transduced into a low-temperature-sensitive plant and expressed therein, an increased cold resistance can be imparted to the plant compared with the case with the use of an ATase gene originating in a known cold-resistant plant.
    • 涉及具有甘油-3-磷酸酰基转移酶(ATase)的生物工程生产力的DNA链的技术,其可用于将膜脂质PG转化为具有改善的耐寒性的组合物,更具体地,涉及嵌合基因,其中中心区域(约1 / 3;用Kpn I和Hind III切割)源自南瓜的甘油-3-磷酸ATase cDNA已被相应的菠菜ATase cDNA区域取代; 一种嵌合基因,其中源自南瓜的cDNA的中心区域(约1/6;用Hind III Sac I切割)已经被源自菠菜的cDNA替代; 或其中源自菠菜的ATase的cDNA的3'末端区域(约1/3;用Kpn I和Eco RI切割)已经被南瓜ATase的cDNA的相应区域替代的嵌合基因。 这样的嵌合基因可以表达对不饱和脂肪酸具有增强的底物特异性的嵌合ATase。 当将该DNA链转导入低温敏感性植物并在其中表达时,与使用来自已知耐寒植物的ATase基因的情况相比,可以赋予植物更高的耐寒性。