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    • 5. 发明申请
    • Selection of Well-Expressed Synthetic Genes
    • 选择良好表达的合成基因
    • US20100120623A1
    • 2010-05-13
    • US12516721
    • 2007-12-20
    • Steen Troels Jorgensen
    • Steen Troels Jorgensen
    • C40B20/00C40B40/08C12N1/00C12N1/20
    • C12N15/1086C12N15/67
    • The invention relates to a method of indirectly identifying a polynucleotide comprising an open reading frame having an improved expression level from a library of polynucleotides encoding the same polypeptide of interest, or variants or homologues thereof, in a host cell expression library, the method comprising the steps of: a) providing an expression library in a host cell, said library comprising at least two different open reading frames encoding the same polypeptide of interest, or variants or homologues thereof, each open reading frame being translationally coupled to a downstream gene encoding a screenable or selectable reporter; b) culturing the host cell under conditions conducive to the expression of the polypeptide of interest, or variant or homologue thereof; and c) screening and/or selecting for a host cell having an improved expression level of the translationally coupled reporter when compared to one or more other host cells of the library, thus indirectly identifying a polynucleotide comprising an open reading frame having an improved expression level in the host cell; as well as the expression libraries and host cells comprising said libraries.
    • 本发明涉及一种间接鉴定多核苷酸的方法,该多核苷酸包含在宿主细胞表达文库中从编码相同感兴趣多肽的多核苷酸文库或其变体或同源物的文库中具有改善的表达水平的开放阅读框,所述方法包括 步骤:a)在宿主细胞中提供表达文库,所述文库包含编码相同感兴趣多肽的至少两个不同的开放阅读框,或其变体或同源物,每个开放阅读框与下游基因编码一个 可筛选或选择的记者; b)在有利于目的多肽表达的条件下或其变体或同源物条件下培养宿主细胞; 和c)当与文库的一个或多个其他宿主细胞相比时,筛选和/或选择具有改良的翻译结合的报道分子的表达水平的宿主细胞,从而间接鉴定包含具有改善的表达水平的开放阅读框的多核苷酸 在宿主细胞中; 以及包含所述文库的表达文库和宿主细胞。