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    • 10. 发明申请
    • Helicase-assisted sequencing with molecular beacons
    • 带有分子信标的Helicase辅助测序
    • US20100092960A1
    • 2010-04-15
    • US12460900
    • 2009-07-23
    • Adrian Fehr
    • Adrian Fehr
    • C12Q1/68
    • C12Q1/6869C12Q2521/513C12Q2537/1376C12Q2565/101C12Q2565/107
    • Provided are compositions that include an at least partially single-stranded nucleic acid, at least one first molecular beacon, and an enzyme comprising a helicase activity, which enzyme is capable of removing the first molecular beacon from the single-stranded nucleic acid wherein the first molecular beacon is hybridized to a first complementary subsequence of the nucleic acid. Also provided are methods of determining the sequence of a template nucleic acid that include removing molecular beacons that are hybridized to the template from the template in a sequential manner using an enzyme that exhibits a helicase activity, detecting a sequence of fluorescent signals that is produced by the removal of a molecular beacons, and converting the sequence of fluorescent signals into nucleotide sequence information. Sequencing systems in which compositions and methods of the invention can be used are also provided.
    • 提供的是包含至少部分单链核酸,至少一个第一分子信标和包含解旋酶活性的酶的组合物,该酶能够从单链核酸中除去第一分子信标,其中第一 分子信标与核酸的第一互补子序列杂交。 还提供了确定模板核酸序列的方法,其包括使用显示解旋酶活性的酶以顺序的方式从模板中除去与模板杂交的分子信标,检测由下述产生的荧光信号序列: 去除分子信标,并将荧光信号序列转化为核苷酸序列信息。 还提供了可以使用本发明的组合物和方法的测序系统。