Novel superoxide dismutase and process for preparation thereof
    3.
    发明授权
    Novel superoxide dismutase and process for preparation thereof 失效
    新型超氧化物歧化酶及其制备方法

    公开(公告)号:US4774185A

    公开(公告)日:1988-09-27

    申请号:US915026

    申请日:1986-10-03

    IPC分类号: C12N9/02 C12R1/01

    CPC分类号: C12N9/0089 Y10S435/822

    摘要: A novel superoxide dismutase prepared from a superoxide dismutase-producing strain of the genus Nocardiopsis. The enzyme is a tetramer with a molecular weight of about 8.8.times.10.sup.4, composed of sub-units of about 2.2.times.10.sup.4. The superoxide dismutase contains 1.56 g-atoms of iron per mole but no copper or manganese. Potassium cyanide at a concentration of 1 mM does not inhibit activity, however exponential inactivation is caused by 5 mM hydrogen peroxide.

    摘要翻译: 一种由Nocardiopsis属超氧化物歧化酶生产菌株制备的新型超氧化物歧化酶。 该酶是分子量约为8.8×10 4的四聚物,由约2.2×10 4的亚单位组成。 超氧化物歧化酶每摩尔含有1.56克原子铁,但不含铜或锰。 浓度为1mM的氰化钾不抑制活性,但是由5mM过氧化氢引起指数失活。

    2-pyranone derivative and process for production thereof
    7.
    发明授权
    2-pyranone derivative and process for production thereof 失效
    2-吡喃酮衍生物及其制备方法

    公开(公告)号:US5021406A

    公开(公告)日:1991-06-04

    申请号:US309673

    申请日:1989-02-13

    摘要: A 2-pyranone derivative represented by the formula (I): ##STR1## wherein R represents a hydrogen atom, or a linear, branched alkylcarbonyloxy, or cyclo-alkylcarbonyloxy group having 3 to 10 carbon atoms, and salts thereof; a process for the production of the above-mentioned 2-pyranone derivative (I), comprising the steps of culturing a microorganism belonging to the genus Streptomyces and capable of producing the derivative, to produce the derivative, and recovering the produced derivative from the cultured product; a biocidal composition comprising the above-mentioned 2-pyranone derivative (I); and a microorganism belonging to the genus Stretromyces and capable of producing the above-mentioned 2-pyranone derivatives.

    摘要翻译: 由式(I)表示的2-吡喃酮衍生物:其中R表示氢原子或具有3至10个碳原子的直链,支链烷基羰氧基或环烷基羰基氧基,以及盐 的; 一种制备上述2-吡喃酮衍生物(I)的方法,包括以下步骤:培养属于链霉菌属的微生物并能够制备该衍生物以产生该衍生物,并从培养的培养物中回收所产生的衍生物 产品; 包含上述2-吡喃酮衍生物(I)的杀生物组合物; 和属于Stretromyces属的微生物,能够生产上述2-吡喃酮衍生物。