Process for producing a hepatitis B infection preventing vaccine
    2.
    发明授权
    Process for producing a hepatitis B infection preventing vaccine 失效
    生产乙型肝炎感染预防疫苗的方法

    公开(公告)号:US4565697A

    公开(公告)日:1986-01-21

    申请号:US552079

    申请日:1983-11-15

    摘要: A process for producing a hepatitis B infection preventing vaccine containing hepatitis B surface antigen as a main component thereof which comprises removing human plasma components possibly causing adverse effects and components capable of causing hepatitis B infection by incorporating steps of fractionation using ammonium sulfate, adsorption on a colloidal silicate and fractionation using polyethylene glycol into the purification stage after heat treatment and further carrying out a treatment for infectivity inactivation without causing any antigenicity impairment.

    摘要翻译: 一种生产含有乙型肝炎表面抗原的乙型肝炎感染预防疫苗作为其主要成分的方法,其包括通过使用硫酸铵进行分级的步骤,除去可能引起不良反应的人血浆成分和能够引起乙型肝炎感染的成分, 胶体硅酸盐和使用聚乙二醇进行热处理后的纯化阶段的分级,并进一步进行感染性失活的治疗,而不引起任何抗原性损伤。

    Mutant AOX2 promoter, vector carrying same, transformant, and production
of heterlogous protein
    10.
    发明授权
    Mutant AOX2 promoter, vector carrying same, transformant, and production of heterlogous protein 失效
    突变AOX2启动子,携带相同的载体,转化子和杂交蛋白的产生

    公开(公告)号:US5683893A

    公开(公告)日:1997-11-04

    申请号:US471206

    申请日:1995-06-06

    CPC分类号: C12N15/815 C07K14/765

    摘要: A mutant AOX2 promoter obtained by mutating a sequence of natural AOX2 promoter in a manner comprising at least one of the three mutation modes of (1) a region extending upstream from nucleotide 1187 inclusive and comprising at least nucleotides 845-960 is deleted, (2) nucleotide(s) is(are) replaced in region(s) in nucleotides 1274-1314, and (3) new oligonucleotide(s) is (are) inserted in region(s) in nucleotides 1274-1314, a vector carrying said mutant AOX2 promoter, a transformant into which said vector has been introduced, and a method for producing a heterologous protein, which comprises cultivating said transformant. The promoter of the present invention has remarkably enhanced activity as compared with natural AOX2 promoter, and is highly useful as a promoter to be carried in an expression vector allowing heterologous protein expression. In addition, the vector and the transformant of the invention can efficiently express and produce various useful heterologous proteins.

    摘要翻译: 以包含以下三种突变模式中的至少一种的方式突变天然AOX2启动子的突变体AOX2启动子被缺失:(1)包含第1187位核苷酸并且至少包含核苷酸845-960的上游延伸的区域;(2) )核苷酸在核苷酸1274-1314的区域中被替换,并且(3)将新的寡核苷酸插入到核苷酸1274-1314的区域中,载体携带所述 突变体AOX2启动子,其中引入了所述载体的转化体,以及产生异源蛋白质的方法,其包括培养所述转化体。 与天然AOX2启动子相比,本发明的启动子具有显着增强的活性,并且作为允许异源蛋白质表达的表达载体中携带的启动子是非常有用的。 此外,本发明的载体和转化体可以有效地表达和产生各种有用的异源蛋白质。