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    • 8. 发明申请
    • A METHOD OF INCREASING COMPLEMENTARITY IN A HETERODUPLEX POLYNUCLEOTIDE
    • 一种提高二叉多项式多项式中的互补性的方法
    • WO02079468A8
    • 2003-12-04
    • PCT/US0203055
    • 2002-02-01
    • LARGE SCALE BIOLOGY CORPPADGETT HAL SFITZMAURICE WAYNE PLINDO JOHN A
    • PADGETT HAL SFITZMAURICE WAYNE PLINDO JOHN A
    • C12N15/09C12N15/10C12P21/00
    • C12N15/102C12N15/1027
    • We describe here an in vitro method of increasing complementarity in a heteroduplex polynucleotide sequence. The method uses annealing of opposite strands to form a polynucleotide duplex with mismatches. The heteroduplex polynucleotide is combined with an effective amount of enzymes having strand cleavage activity, 3' to 5' exonuclease activity, and polymerase activity, and allowing sufficient time for the percentage of complementarity to be increased within the heteroduplex. Not all heteroduplex polynucleotide will necessarily have all mismatches resolved to complementary. The resulting polynucleotide is optionally ligated. Several variant polynucleotide result. At sites where either of the opposite strands has templated recoding in the other strand, the resulting percent complementarity of the heteroduplex polynucleotide sequence is increased. The parent polynucleotides need not be cleaved into fragments prior to annealing heterologous strands. Therefore, no reassembly is required.
    • 我们在此描述增加异源双链多核苷酸序列中互补性的体外方法。 该方法使用相反链退火形成具有错配的多核苷酸双链体。 将异源双链体多核苷酸与有效量的具有链切割活性,3'至5'外切核酸酶活性和聚合酶活性的酶组合,并且允许足够的时间以在异源双链体内增加互补百分比。 不是所有的异源双链多核苷酸都必须将所有错配解析为互补。 所得多核苷酸任选连接。 几个变体多核苷酸结果 在其中任一条相反链在另一条链中模板化重新编码的位点,异源双链体多核苷酸序列的所得百分比互补性增加。 亲本多核苷酸在退火异源链之前不需要被切割成片段。 因此,不需要重新组装。