Methods and materials for the rapid and high volume production of a gene knock-out library in an organism
    18.
    发明授权
    Methods and materials for the rapid and high volume production of a gene knock-out library in an organism 失效
    用于快速和高产量生物体中基因敲除文库的方法和材料

    公开(公告)号:US06703200B1

    公开(公告)日:2004-03-09

    申请号:US09658859

    申请日:2000-09-11

    IPC分类号: C12Q168

    摘要: The present invention relates to a method for facilitating site directed homologous recombination in an organism to produce mutants comprising: 1) providing a large insert vector library comprising one or more large insert vectors, each of said large insert vectors comprising a piece of DNA, said DNA piece comprising multiple genes from a target organism and a first selectable marker functional for selection in bacteria; 2) providing a second vector comprising a transposable element, said transposable element comprising a nucleotide sequence coding for a second selectable marker flanked on each side by an inverted repeat sequence, wherein said selectable marker is bifunctional for selection in bacteria and the target organism and wherein said inverted repeat sequences are functional as a binding site for a transposase; 3) incubating said library with said second vector in the presence of a transposase specific for the inverted repeat sequences on the plasmid vector, such that the transposable element is transferred randomly into an individual large insert of the large insert library to produce disrupted large insert vectors; 4) optionally, amplifying the disrupted large insert vectors resulting from step 3); 5) introducing at least one of said disrupted large insert vectors into a target host cell; and 6) selecting for successful homologous recombination in said target host cell using the second selectable marker.

    摘要翻译: 本发明涉及一种用于促进生物体中的位点定向同源重组以产生突变体的方法,其包括:1)提供包含一个或多个大插入载体的大插入载体文库,每个所述大插入载体包含一片DNA,所述 DNA片段,其包含来自靶生物体的多个基因和用于在细菌中选择的第一选择性标记; 2)提供包含转座元件的第二载体,所述转座元件包含编码第二选择标记的核苷酸序列, 反向重复序列,其中所述选择性标记是双功能的,用于在细菌和靶生物中进行选择,并且其中所述反向重复序列作为转座酶的结合位点起作用; 3)在转座酶特异性存在下将所述文库与所述第二载体一起温育 对于质粒载体上的反向重复序列,使得转座 随机携带的元素被随机转移到大插入文库的单个大插入物中以产生破坏的大插入载体; 4)任选地扩增由步骤3)产生的破坏的大插入片段; 5)引入至少一个所述破坏的大插入片段 进入目标宿主细胞; 和6)使用第二选择标记物在所述靶宿主细胞中选择成功的同源重组。