PREPARATION METHOD OF LACTATE POLYMERS AND LACTATE COPOLYMERS USING POLYHYDROXYALKANOATE SYNTHASE MUTANTS
申请人:LG Chem, Ltd.
公开号:EP2471910A2
公开(公告)日:2012-07-04
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.
本发明提供了能够合成乳酸聚合物(聚乳酸)和乳酸共聚物(聚乳酸共聚物)的各种聚羟基烷酸(PHA)合酶的突变体,以及使用这些突变体制备乳酸聚合物和乳酸共聚物的方法。更具体地说,提供了 SEQ ID NO:2、4、6 或 8 所述的聚羟基烷酸合酶突变体,以及使用该合酶突变体制备乳酸聚合物和乳酸共聚物的方法。SEQ ID NO:2、4、6 或 8 所述的聚羟基烷酸合酶可通过影响合成乳酸聚合物活性的氨基酸序列突变而具有合成乳酸聚合物和乳酸共聚物的活性,并可通过使用该合酶的突变体生产分别具有不同特征的乳酸聚合物和共聚物。