会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Polyhydroxybutyrate polymerase
    • 聚羟基丁酸聚合酶
    • US5534432A
    • 1996-07-09
    • US418868
    • 1995-04-07
    • Oliver P. PeoplesAnthony J. Sinskey
    • Oliver P. PeoplesAnthony J. Sinskey
    • C12N1/21C12N9/00C12N9/04C12N9/10C12N15/52C12N15/60C12P7/62C12N5/04
    • C12N9/0006C12N15/52C12N9/00C12N9/1029C12P7/625
    • 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 polymerass or PHA polymerase) from Zoogloea ramigera strain I-16-M, Alcaligenes eutrophus, Nocardia salmonicolur, and P. olevorans 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。 鉴定了来自Zoogloea苎麻菌株I-16-M,产碱假单胞菌,嗜N N sal ur ol ol ur ur ur ur ur and and in in the the the or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or or 分离并在非PHB产生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。
    • 9. 发明授权
    • Non-capsule exopolysaccharide from Zoogloea ramigera
    • 来自Zoogloea ramigera的非胶囊外多糖
    • US5091376A
    • 1992-02-25
    • US525197
    • 1990-05-17
    • Donald D. Easson, Jr.Oliver P. PeoplesAnthony J. Sinskey
    • Donald D. Easson, Jr.Oliver P. PeoplesAnthony J. Sinskey
    • C09K8/90C12N15/52C12P19/04
    • C09K8/905C12N15/52C12P19/04
    • Two new bacterial strains designated Zoogloea ramigera 115SL and Zoogloea ramigera 115SLR, a rifampicin resistant derivative of 115SL, have been developed. These strains are derived from the wild type Zoogloea ramigera 115, ATCC 25935. The two new strains produce a novel exopolysaccharide (EPS) and have several desirable characteristics that are absent from the parent strain, including improved culture properties, since they do not produce an EPS capsule layer like that of the parent 115 strain. The 115SL EPS is instead excreted as a slime layer which is not confined to the immediate area surrounding the cells. Since cells are not trapped within a floc where they grow at a reduced rate or die because of nutrient starvation, the new strains have more consistent and reproducible growth cycles and increased growth rates. As a consequence, exopolysaccharide production is more consistent and titers are higher. The separation of the EPS from the cells is also much easier and more economical. The other very important characteristic of strains 115SL and 115SLR is that they are able to receive foreight DNA using conventional techniques due to the absence of the capsule layer. This facilitates the application of recombinant DNA technology to control and produce novel exopolysaccharides.
    • 已经开发了两种新的细菌菌株,称为Zoogloea ramigera 115SL和Zoogloea ramigera 115SLR,115SL的利福平抗性衍生物。 这些菌株衍生自野生型Zoogloea ramigera 115,ATCC 25935.两种新菌株产生新颖的外多糖(EPS),并具有几种所需的特征,其不存在于亲本菌株中,包括改良的培养性质,因为它们不产生 EPS胶囊层像母体115株。 相反,115SL EPS排泄成为不限于细胞周围的紧邻区域的粘液层。 由于细胞不被捕获在絮状物中,它们以降低的速率生长或由于营养物质饥饿而死亡,所以新菌株具有更一致和可重现的生长周期和增加的生长速率。 结果,外多糖生产更一致,滴度更高。 EPS与细胞的分离也更容易和更经济。 菌株115SL和115SLR的另一个非常重要的特征是,由于不存在胶囊层,它们能够使用常规技术接收迫切的DNA。 这有利于重组DNA技术的应用来控制和产生新的外多糖。