Artificial mismatch hybridization
    42.
    发明授权
    Artificial mismatch hybridization 失效
    人工错配杂交

    公开(公告)号:US5780233A

    公开(公告)日:1998-07-14

    申请号:US659605

    申请日:1996-06-06

    IPC分类号: C12N15/09 C12Q1/68 C07H21/04

    CPC分类号: C12Q1/6827

    摘要: An improved nucleic acid hybridization process is provided which employs a modified oligonucleotide and improves the ability to discriminate a control nucleic acid target from a variant nucleic acid target containing a sequence variation. The modified probe contains at least one artificial mismatch relative to the control nucleic acid target in addition to any mismatch(es) arising from the sequence variation. The invention has direct and advantageous application to numerous existing hybridization methods, including, applications that employ, for example, the Polymerase Chain Reaction, allele-specific nucleic acid sequencing methods, and diagnostic hybridization methods.

    摘要翻译: 提供了改进的核酸杂交方法,其使用经修饰的寡核苷酸,并提高了鉴别来自含有序列变异的变体核酸靶的对照核酸靶的能力。 修饰的探针除了由序列变异产生的任何不匹配之外,还包含相对于对照核酸靶的至少一个人工错配。 本发明对许多现有的杂交方法具有直接和有利的应用,包括使用例如聚合酶链式反应,等位基因特异性核酸测序方法和诊断杂交方法的应用。

    Triple helix purification and sequencing
    43.
    发明授权
    Triple helix purification and sequencing 失效
    三螺旋纯化和测序

    公开(公告)号:US5401632A

    公开(公告)日:1995-03-28

    申请号:US915245

    申请日:1992-07-16

    摘要: Disclosed herein are methods, kits, and equipment for purifying single stranded circular DNA and then using the DNA for DNA sequencing purposes. Templates are provided with an insert having a hybridization region. An elongated oligonucleotide has two regions that are complementary to the insert and the oligo is bound to a magnetic anchor. The oligo hybridizes to the insert on two sides to form a stable triple helix complex. The anchor can then be used to drag the template out of solution using a magnet. The system can purify sequencing templates, and if desired the triple helix complex can be opened up to a double helix so that the oligonucleotide will act as a primer for further DNA synthesis.

    摘要翻译: 本文公开了用于纯化单链环状DNA然后使用DNA进行DNA测序目的的方法,试剂盒和设备。 提供了具有杂交区域的插入物的模板。 细长的寡核苷酸具有与插入物互补的两个区域,寡聚体结合到磁性锚定体上。 寡核苷酸与两侧的插入物杂交以形成稳定的三螺旋复合物。 然后可以使用锚来使用磁体将模板从溶液中拖出。 该系统可以纯化测序模板,如果需要,三螺旋复合物可以打开至双螺旋,使得寡核苷酸将作为进一步DNA合成的引物。