Purifying protein or peptide recombinant DNA products by
electroseparation
    1.
    发明授权
    Purifying protein or peptide recombinant DNA products by electroseparation 失效
    通过电离分离纯化蛋白质或肽重组DNA产物

    公开(公告)号:US4746647A

    公开(公告)日:1988-05-24

    申请号:US834336

    申请日:1986-03-14

    申请人: Stefan Svenson

    发明人: Stefan Svenson

    摘要: A method of purifying a contaminated product (protein/peptide) produced by rDNA technique, from hydrophobic contaminants which are charged and originate from the microbial cloning host employed, and the product thus purified are disclosed. The contaminated product is subjected to electroseparation, such as electrodialysis, to remove the contaminants. A charge-providing pretreatment is resorted to when the contaminants themselves are not charged enough to enable them to be directly separated upon electroseparation. In addition, a method of checking the purity of a product (protein/peptide) produced by rDNA technique is disclosed. Moreover, a method of checking the efficiency of the purification process used for purifying a product is disclosed.

    摘要翻译: PCT No.PCT / SE85 / 00218 Sec。 371日期:1986年3月27日 102(e)1986年3月14日PCT PCT。1985年5月24日PCT公布。 出版物WO85 / 05631 1985年12月19日的日期。一种通过rDNA技术产生的污染产物(蛋白质/肽)的纯化方法,其由来自所使用的微生物克隆宿主的来自疏水性污染物的疏水性污染物和如此纯化的产物进行了公开。 受污染的产品经过电分离,例如电渗析,以除去污染物。 当污染物本身没有充电足以使其能够在电分离时直接分离时,进行电荷提供预处理。 另外,公开了通过rDNA技术制备的产品(蛋白质/肽)的纯度检查方法。 此外,公开了一种检查用于净化产品的纯化过程效率的方法。

    DNA sequencing
    3.
    发明授权
    DNA sequencing 失效
    DNA测序

    公开(公告)号:US5674716A

    公开(公告)日:1997-10-07

    申请号:US422147

    申请日:1995-04-13

    摘要: A method for sequencing a strand of DNA, including the steps of: providing the strand of DNA; annealing the strand with a primer able to hybridize to the strand to give an annealed mixture; incubating the mixture with a deoxyribonucleoside triphosphate, a DNA polymerase, and a chain terminating agent under conditions in which the polymerase causes the primer to be elongated to form a series of DNA products differing in length of the elongated primer, each DNA product having a chain terminating agent at its elongated end; the number of each DNA product being approximately the same for substantially all DNA products differing in length from 1 to 20 bases.

    摘要翻译: 一种测序DNA链的方法,包括以下步骤:提供DNA链; 用能够与链杂交的引物退火链,得到退火混合物; 在聚合酶引导引物伸长的条件下,使DNA混合物与脱氧核糖核苷三磷酸,DNA聚合酶和链终止剂一起孵育以形成长链引物长度不同的一系列DNA产物,每个DNA产物具有链 终止剂在其细长端; 对于从1至20个碱基长度不同的基本上所有DNA产物,每个DNA产物的数量大致相同。

    Electrodialysis apparatus and process
    4.
    发明授权
    Electrodialysis apparatus and process 失效
    电渗析装置及工艺

    公开(公告)号:US4608140A

    公开(公告)日:1986-08-26

    申请号:US743219

    申请日:1985-06-10

    摘要: Apparatuses and processes are described for transferring electrolytes from one electrolytically conducting solution to another, said apparatus comprising a pair of spaced electrodes; at least one pair of spaced electrolytically conducting barriers between said electrodes, one of said barriers having a transport number for ions of one sign substantially greater than that of said solutions and of the other barrier, means for applying a substantially direct current electrical potential between said electrodes in a direction to cause electrolyte to the transferred out of the space between said barriers; a plurality of fluid permeable tubules between said barriers; means for introducing fluid into at least one end of such tubules; and means for withdrawing fluid from the space between said barriers.

    摘要翻译: 描述了用于将电解质从一个电解导电溶液转移到另一个的装置和方法,所述装置包括一对隔开的电极; 在所述电极之间的至少一对间隔开的电导电屏障,所述屏障中的一个具有一个符号的离子的输送数,大体上大于所述溶液和另一个屏障的离子,用于在所述电极之间施加基本上直接的电流电位 电极沿着使电解质转移到所述屏障之间的空间的方向; 在所述屏障之间的多个流体可渗透小管; 将流体引入这种小管的至少一端的装置; 以及用于从所述屏障之间的空间抽出流体的装置。

    Separation and purification of biomembrane proteins
    6.
    发明授权
    Separation and purification of biomembrane proteins 失效
    生物膜蛋白的分离和纯化

    公开(公告)号:US4654132A

    公开(公告)日:1987-03-31

    申请号:US758247

    申请日:1985-07-24

    摘要: A method for separating and purifying a biomembrane protein from biomembrane by subjecting the biomembrane to gel electrophoresis in the presence of at least one anionic surfactant having the general formula (I):RO--XO).sub.m (YO).sub.n SO.sub.3 M (I)wherein R represents an alkyl group having 6 to 22 carbon atoms or an alkylphenyl group having 6 to 22 carbon atoms, X and Y independently represent a hydrocarbon residue having 1 to 4 carbon atoms, m and n independently represent a number of from zero to 40 provided that m+n is 4 to 40, and M represents an alkali metal, an alkaline earth metal, an amine, or ammonium.Thus, the desired biomembrane protein can be separated and purified with a high purity without denaturing the protein and also without impairing the biological function thereof.

    摘要翻译: 一种通过在至少一种具有通式(I)的阴离子表面活性剂:RO-XO)m(YO)n SO 3 M(I)的存在下使生物膜进行凝胶电泳从生物膜中分离和纯化生物膜蛋白的方法,其中R表示 具有6至22个碳原子的烷基或具有6至22个碳原子的烷基苯基,X和Y独立地表示具有1至4个碳原子的烃基,m和n独立地表示0至40的数,条件是m + n为4〜40,M为碱金属,碱土金属,胺或铵。 因此,可以高纯度地分离和纯化所需的生物膜蛋白质,而不使蛋白质变性,并且也不损害其生物学功能。

    Method of analysis or assay for polynucleotides and analyzer or
instrument for polynucleotides
    8.
    发明授权
    Method of analysis or assay for polynucleotides and analyzer or instrument for polynucleotides 失效
    多核苷酸分析或测定方法,多核苷酸分析仪或仪器

    公开(公告)号:US5861252A

    公开(公告)日:1999-01-19

    申请号:US758220

    申请日:1996-11-27

    CPC分类号: C12Q1/6855 C12Q1/683

    摘要: A method of analysis or assay for nucleotides comprises: (1) a step of digesting DNA with a restriction enzyme; (2) a step of discriminating a difference in sequences of the DNA fragments obtained in step (1) above around the 3' termini thereof with a DNA probe and extending the DNA probe by a complementary strand synthesis to fractionate the DNA fragments into groups; and, (3) a step of measuring lengths of the DNA fragments which belong to said groups, or length of the DNA probe extended by said complementary strand extension reaction; wherein the thus measured lengths obtained for every sequence of the bases of the DNA fragments around the 3' termini thereof are employed as fingerprints.

    摘要翻译: 核苷酸的分析或测定方法包括:(1)用限制酶消化DNA的步骤; (2)通过DNA探针区分3'末端的步骤(1)中获得的DNA片段的序列差异的步骤,并通过互补链合成扩增DNA探针,将DNA片段分离成组; 和(3)测量属于所述组的DNA片段的长度或通过所述互补链延伸反应延伸的DNA探针的长度的步骤; 其中将由此测量的长度为其3'末端周围的DNA片段的碱基的每个序列获得的长度用作指纹。

    Electrophoretic gel for separating hemoglobin variants
    9.
    发明授权
    Electrophoretic gel for separating hemoglobin variants 失效
    用于分离血红蛋白变体的电泳凝胶

    公开(公告)号:US4808288A

    公开(公告)日:1989-02-28

    申请号:US798133

    申请日:1985-11-13

    CPC分类号: G01N27/44747

    摘要: An electrophoretic gel comprising (a) at least one marine hydrocolloid processed from the class Rodophycea; and (b) a buffer. The electrophoretic gel is characterized in that the buffer (i) is selected from a group consisting of adipic acid, glutaric acid, itaconic acid, maleic acid, malic acid, malonic acid, succinic acid, succinamic acid, and tricarbalyllic acid and (ii) is present in a concentration of about 0.05 to about 0.09 M.

    摘要翻译: 一种电泳凝胶,其包含(a)从Rodophycea类处理的至少一种海洋水解胶体; 和(b)缓冲器。 电泳凝胶的特征在于缓冲液(i)选自己二酸,戊二酸,衣康酸,马来酸,苹果酸,丙二酸,琥珀酸,琥珀酰胺酸和三芳烃酸组成的组,(ii) 以约0.05至约0.09M的浓度存在。

    Element for electrophoresis
    10.
    发明授权
    Element for electrophoresis 失效
    电泳元件

    公开(公告)号:US4737259A

    公开(公告)日:1988-04-12

    申请号:US948401

    申请日:1986-12-29

    IPC分类号: G01N27/447 C07K3/14

    摘要: An element for electrophoresis suitably employable for electrophoresis of biopolymers such as proteins, as well as for the determination of the base sequence of DNA, RNA, their fragments, and their derivatives, which comprises a plastic support, a nonconductive metal oxide layer, and an electrophoresis medium layer comprising an aqueous polyacrylamide gel formed by crosslinking polymerization of an acrylamide compound and a crosslinking agent in the presence of water, which are superposed in this order. The electrophoresis medium layer may contain a water-soluble polymer and agarose. The medium layer may contain a modifier such as an anionic surfactant, formamide or urea.

    摘要翻译: 适用于生物聚合物如蛋白质电泳的电泳元件,以及用于测定DNA,RNA,其片段及其衍生物的碱基序列,其包含塑料载体,非导电金属氧化物层和 电泳介质层,其包含通过在水存在下交联聚合丙烯酰胺化合物和交联剂而形成的聚丙烯酰胺凝胶水溶液,其以该顺序重叠。 电泳介质层可含有水溶性聚合物和琼脂糖。 中间层可以含有改性剂,例如阴离子表面活性剂,甲酰胺或脲。