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    • 60. 发明申请
    • Expression Cloning Method Suitable for Selecting Library Clones Producing a Polypeptide of Interest
    • 表达克隆方法适用于选择产生多肽兴趣的文库克隆
    • US20100221783A1
    • 2010-09-02
    • US12599384
    • 2008-05-07
    • Jesper Vind
    • Jesper Vind
    • C12P21/04
    • C12N15/80C12P21/02
    • The present invention relates to methods for producing a recombinant polypeptide of interest, the method comprising the steps of: a) providing a polynucleotide library encoding one or more polypeptides of interest, wherein the library was prepared in an expression cloning vector comprising at least the following elements: i) a polynucleotide encoding a selectable marker; ii) a fungal replication initiation sequence, preferably an autonomously replicating sequence (ARS); and iii) a polynucleotide comprising in sequential order: a promoter derived from a fungal cell, a cloning-site into which the library is cloned, and a transcription terminator; b) transforming a mutant of a parent filamentous fungal host cell with the library, wherein the frequency of non-homologous recombination in the mutant has been decreased compared to the parent; c) culturing the transformed host cell obtained in (b) under conditions suitable for expression of the polynucleotide library; and d) selecting a transformed host cell which produces the polypeptide of interest.
    • 本发明涉及用于产生感兴趣的重组多肽的方法,所述方法包括以下步骤:a)提供编码一种或多种感兴趣多肽的多核苷酸文库,其中所述文库在包含至少以下的表达克隆载体中制备 元素:i)编码可选择标记的多核苷酸; ii)真菌复制起始序列,优选自主复制序列(ARS); 和iii)包含序列顺序的多核苷酸:源自真菌细胞的启动子,克隆文库的克隆位点和转录终止子; b)用文库转化亲本丝状真菌宿主细胞的突变体,其中与亲本相比,突变体中非同源重组的频率已经降低; c)在适于表达多核苷酸文库的条件下培养(b)中获得的转化的宿主细胞; 和d)选择产生感兴趣多肽的转化的宿主细胞。