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    • 4. 发明申请
    • METHOD FOR PRODUCING NOVEL POLYESTER BIOPOLYMERS
    • 生产新型聚酯生物聚合物的方法
    • WO1991000917A1
    • 1991-01-24
    • PCT/US1990003851
    • 1990-07-10
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGYPEOPLES, Oliver, P.SINSKEY, Anthony, J.
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    • C12P07/62
    • C12N15/52C12P7/625
    • A method for controlling and modifying biopolymer synthesis by manipulation of the genetics and enzymology of synthesis of polyhydroxybutyrate (PHB) and polyhydroxyalkanoate (PHA) polyesters at the molecular level in procaryotic and eukaryotic cells, especially plants. Examples demonstrate the isolation, characterization, and expression of the genes involved in the production of PHB and PHA polymers. Genes encoding the enzymes in the PHB and PHA synthetic pathway (beta-ketothiolase, acetoacetyl-CoA reductase and PHB polymerase or PHA polymerase) from Zoogloea ramigera strain I-16-M, Alcaligenes eutrophus, Nocardia salmonicolur, and Pseudomonas oleovarans were identified or isolated and expressed in a non-PHB producing organism, E. coli. Specific modifications to the polymers include variation in the chain length of the polymers and incorporation of different monomers into the polymers to produce co-polymers with different physical properties.
    • 通过在原核和真核细胞,特别是植物中的分子水平处理聚羟基丁酸酯(PHB)和聚羟基链烷酸酯(PHA)聚酯的遗传学和酶学方法来控制和改变生物聚合物合成的方法。 实施例证明参与PHB和PHA聚合物生产的基因的分离,表征和表达。 鉴定或分离来自苎麻苎麻菌株I-16-M,产碱杆菌,嗜碱性亚油酸假单胞菌和油菜假单胞菌的PHB和PHA合成途径中的酶(β-酮硫解酶,乙酰乙酰辅酶A还原酶和PHB聚合酶或PHA聚合酶)的编码基因 并在非PHB生物体大肠杆菌中表达。 对聚合物的具体修饰包括聚合物链长度的变化以及将不同单体引入到聚合物中以产生具有不同物理性质的共聚物。