PREPARATION METHOD OF LACTATE POLYMERS AND LACTATE COPOLYMERS USING POLYHYDROXYALKANOATE SYNTHASE MUTANTS
    8.
    发明申请
    PREPARATION METHOD OF LACTATE POLYMERS AND LACTATE COPOLYMERS USING POLYHYDROXYALKANOATE SYNTHASE MUTANTS 审中-公开
    使用聚羟基烷基酯合成酶的乳酸聚合物和乳酸共聚物的制备方法

    公开(公告)号:US20120171737A1

    公开(公告)日:2012-07-05

    申请号:US13381340

    申请日:2010-06-30

    摘要: Mutants of various polyhydroxyalkanoate (PHA) synthases capable of synthesizing a lactate polymer (PLA) and a lactate copolymer (PLA copolymer), and a method of preparing a lactate polymer and a lactate copolymer using the same are provided. More specifically, a mutant of polyhydroxyalkanoate synthase set forth in SEQ ID NO: 2, 4, 6, or 8, and a method of preparing lactate polymer and lactate copolymer using the mutant of synthase are provided. The polyhydroxyalkanoate synthase set forth in SEQ ID NO: 2, 4, 6, or 8 can have an activity of synthesizing a lactate polymer and a lactate copolymer by an amino acid sequence mutation affecting an activity of synthesizing a lactate polymer, and can produce a lactate polymer and a copolymer that have different features, respectively, by using the mutants of the synthase.

    摘要翻译: 提供能够合成乳酸聚合物(PLA)和乳酸共聚物(PLA共聚物)的各种聚羟基链烷酸酯(PHA)合成酶的突变体,以及使用其制备乳酸盐聚合物和乳酸共聚物的方法。 更具体地,提供了SEQ ID NO:2,4,6或8所示的聚羟基链烷酸酯合酶的突变体,以及使用合成酶突变体制备乳酸盐聚合物和乳酸共聚物的方法。 SEQ ID NO:2,4,6或8所示的聚羟基链烷酸酯合酶可以通过影响乳酸聚合物合成活性的氨基酸序列突变而具有乳酸聚合物和乳酸共聚物的合成活性, 乳酸聚合物和具有不同特征的共聚物,分别通过使用合成酶的突变体。