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    • 7. 发明申请
    • GLUCAN CHAIN LENGTH DOMAINS
    • 葡萄牙链长度域
    • WO2002079410A2
    • 2002-10-10
    • PCT/US2002/009574
    • 2002-03-29
    • BASF PLANT SCIENCE GMBHCOMMURI, PadmaKEELING, Peter, L.RAMIREZ, NonaMcKEAN, AngelaGAO, ZhongGUAN, Hanping
    • COMMURI, PadmaKEELING, Peter, L.RAMIREZ, NonaMcKEAN, AngelaGAO, ZhongGUAN, Hanping
    • C12N
    • C12N9/1051C07K2319/00C12N15/8245C12N15/8257
    • The invention relates to a method for changing the glucan chain lengths using fusion protein domains of various starch synthase enzymes in any starch or starch granule producing organism. The invention relates to identification of a Gl ucan ASS ociation domain (herein after referred to as "GLASS" domain) of granule bound starch synthase (GBSS) used in combination with any other GLY cosyl Tr ransferase domain otherwise referred to as pfam00534-catalytic domain (herein after referred to as "GLYTR" domain) of one or more of any of the other starch synthase enzymes. The invention relates to identifying and using the new and surprising discovery that starch synthases are composed of at least two distinct functional domains herein after labelel as "GLASS" and "GLYTR". More specifically, this invention relates to the genetic constructs that encode the fusions of the above domains and to the plants transformed with said constructs. The method of invention can thus be used in particular to provide a modified profile of starch granule associated starch synthase (SS) enzymes and by which modified glucan chain lengths of amylopectin and hence, modified starches and or complexes will be generated. This can be done in any organism and more particularly and plant that stores or synthesizes starch in any of its parts, such as potato, sweet potato, cassava, pea, taro, banana, yam and cereal crops such as rice, maize, wheat, barley, oats, and sorghum.
    • 本发明涉及使用任何淀粉或淀粉颗粒生产生物体中各种淀粉合成酶的融合蛋白结构域来改变葡聚糖链长度的方法。 本发明涉及用于与任意的组合使用的颗粒结合的淀粉合成酶(GBSS)的ucuco结构域(以下称为“玻璃”域)的鉴定 另一种其它一种或多种任何其它淀粉合成酶(称为“GLYTR”结构域)的pfam00534-催化结构域(以下简称“GLYTR”结构域)之间的GLY 酶。 本发明涉及鉴定和使用新的和令人惊奇的发现,淀粉合成酶由本文中的至少两个不同的功能结构域组成,作为“玻璃”和“GLYTR”。 更具体地,本发明涉及编码上述结构域的融合物和用所述构建体转化的植物的遗传构建体。 因此,本发明的方法可以特别用于提供淀粉颗粒相关淀粉合成酶(SS)酶的改性分布,由此将产生修饰的葡聚糖链长度的支链淀粉,因此将改变淀粉和/或复合物。 这可以在任何生物体,更具体地和在其任何部分存储或合成淀粉的植物中进行,例如马铃薯,甘薯,木薯,豌豆,芋头,香蕉,山药和谷类作物如水稻,玉米,小麦, 大麦,燕麦和高粱。