Process of using xanthomonas campestris NRRL B-12075 and NRRL B-12074
for making heteropolysaccharide
    1.
    发明授权
    Process of using xanthomonas campestris NRRL B-12075 and NRRL B-12074 for making heteropolysaccharide 失效
    使用野油黄单胞菌NRRL B-12075和NRRL B-12074制备杂多糖的方法

    公开(公告)号:US4400467A

    公开(公告)日:1983-08-23

    申请号:US251831

    申请日:1981-04-07

    IPC分类号: C12P19/06 C12N1/20 C12R1/64

    摘要: This invention involves the production of heteropolysaccharides such as xanthan gum by the continuous fermentation of suitable nutrient media with new degenerative resistant variants of Xanthomanas campestris. Fermentation is conducted in a nitrogen, sulfur or phosphorous limited nutrient medium containing glucose or a minimal medium plus yeast extract and glutamic acid, in a first fermenter to enhance cultural growth. After the limiting growth element (nitrogen, sulfur or phosphorous) has been essentially consumed, the medium is then transferred to a second fermenter and fermentation continued while adding a suitable carbohydrate which the bacteria convert into the heteropolysaccharide product. The process may be modified by carrying out cultural growth and production of the polysaccharide in the same fermenter. The bacteria employed were cultured from a glucose-mineral salts medium fortified with yeast extract or a glucose-defined minimal medium in which ammonium chloride served as the sole assimilable nitrogen source.

    摘要翻译: 本发明涉及通过连续发酵合适的营养培养基与野菜的新的退化抗性变体来生产杂多糖如黄原胶。 在含有葡萄糖或基本培养基加酵母提取物和谷氨酸的氮,硫或磷限制营养培养基中,在第一发酵罐中进行发酵以增强文化生长。 在极限生长元素(氮,硫或磷)基本消耗之后,将培养基转移到第二发酵罐中并继续发酵,同时加入细菌转化成杂多糖产物的合适的碳水化合物。 该方法可以通过在同一发酵罐中进行多糖的文化生长和生产来改变。 使用的细菌是由酵母提取物或葡萄糖限定的基本培养基强化的葡萄糖 - 无机盐培养基培养的,其中氯化铵作为唯一可同化的氮源。

    RIBONUCLEOTIDE TAG NUCLEIC ACID DETECTION
    2.
    发明申请

    公开(公告)号:US20090263813A1

    公开(公告)日:2009-10-22

    申请号:US12421188

    申请日:2009-04-09

    IPC分类号: C12Q1/68

    CPC分类号: C12Q1/6858 C12Q1/686

    摘要: The present application provides polynucleotides comprising 5′-tails with sequence segments useful for the detection of target nucleic acid sequences, and methods for their use in detecting target nucleic acids. The polynucleotides are used to amplify a subsequence of a target nucleic acid in the presence of one or more ribonucleotides. The ribonucleotides are incorporated into amplification products at regular intervals complementary to the 5′-tail sequence segments. Cleavage of amplification products at the bond immediately 3′ to incorporated ribonucleotides produces detectably distinct fragments indicative of the presence or absence of a target nucleic acid.

    摘要翻译: 本申请提供了包含具有用于检测靶核酸序列的序列区段的5'-尾的多核苷酸,以及它们用于检测靶核酸的方法。 多核苷酸用于在一个或多个核糖核苷酸存在下扩增靶核酸的亚序列。 核糖核苷酸以与5'-尾序列片段互补的规则间隔掺入扩增产物中。 立即将3'端的扩增产物切割成掺入的核糖核苷酸产生指示靶核酸存在或不存在的可检测的不同片段。

    Mutant DNA Polymerases with Improved Pyrophasphorolysis Activated Polymerization (PAP) Ability
    8.
    发明申请
    Mutant DNA Polymerases with Improved Pyrophasphorolysis Activated Polymerization (PAP) Ability 有权
    突变型DNA聚合酶与改良的激活聚合反应(PAP)的能力

    公开(公告)号:US20090155802A1

    公开(公告)日:2009-06-18

    申请号:US12324491

    申请日:2008-11-26

    CPC分类号: C12N9/1252

    摘要: Disclosed are mutant DNA polymerases having improved extension rates relative to a corresponding, unmodified polymerase. The mutant polymerases are useful in a variety of disclosed primer extension methods. Also disclosed are related compositions, including recombinant nucleic acids, vectors, and host cells, which are useful, e.g., for production of the mutant DNA polymerases.

    摘要翻译: 公开了相对于相应的未修饰聚合酶具有改进的延伸速率的突变型DNA聚合酶。 突变型聚合酶可用于各种公开的引物延伸方法。 还公开了相关组合物,包括重组核酸,载体和宿主细胞,其可用于例如用于产生突变型DNA聚合酶。