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    • 10. 发明申请
    • NUCLEIC ACID LIGATION METHOD
    • 核酸配方法
    • WO2013119690A1
    • 2013-08-15
    • PCT/US2013/024965
    • 2013-02-06
    • WISCONSIN ALUMNI RESEARCH FOUNDATIONRAINES, Ronald, T.DESAI, Kevin, K.
    • RAINES, Ronald, T.DESAI, Kevin, K.
    • C12P19/34C12Q1/68C07H21/02C07H21/04C12N15/10
    • C12P19/34C12N9/00C12N9/93C12N15/1093
    • Methods and kits for covalently joining a 3' nucleic acid fragment having a 5'-hydroxyl terminus to a 5' nucleic acid fragment having a 3 '-phosphate terminus are disclosed. The methods include the step of contacting the 3'-phosphate terminus of a first nucleic acid molecule and the 5'-hydroxyl terminus of a second nucleic acid molecule with an isolated 2',3'-cyclic phosphate RNA ligase (RtcB) and a purine triphosphate in the presence of manganese (II) ion, whereby the 3 '-phosphate terminus of the first nucleic acid molecule and the 5'-hydroxyl terminus of the second nucleic acid molecule are covalently joined. Although the purine triphosphate used is generally GTP or dGTP, if the method is performed in the presence of an Archease, any purine triphosphate may be used. Accordingly, the disclosed kits include isolated RtcB, along with a purine triphosphate and/or an isolated Archease. Such methods and kits can be used to tag or ligate DNA or RNA on its 3'-phosphate terminus, as long as the terminal residue at the 3'-phosphate terminus is an RNA nucleotide.
    • 公开了共价连接具有5'-羟基末端的3'核酸片段至具有3'-磷酸末端的5'核酸片段的方法和试剂盒。 所述方法包括使第一核酸分子的3'-磷酸末端和第二核酸分子的5'-羟基端与分离的2',3'-环磷酸酯RNA连接酶(RtcB)和 在锰(II)离子存在下的三磷酸嘌呤,由此第一核酸分子的3'-磷酸末端和第二核酸分子的5'-羟基末端共价连接。 尽管所用的三磷酸嘌呤通常是GTP或dGTP,但是如果该方法在Archease存在下进行,则可以使用任何嘌呤三磷酸。 因此,所公开的试剂盒包括分离的RtcB,以及嘌呤三磷酸酯和/或分离的原料。 只要3'-磷酸末端的末端残基是RNA核苷酸,这样的方法和试剂盒可用于标记或连接其3'-磷酸末端上的DNA或RNA。