首页> 外文期刊>Chemistry: A European journal >Allele specific C-bulge probes with one unique fluorescent molecule discriminate the single nucleotide polymorphism in DNA
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Allele specific C-bulge probes with one unique fluorescent molecule discriminate the single nucleotide polymorphism in DNA

机译:具有一个独特荧光分子的等位基因特异性C凸起探针可区分DNA中的单核苷酸多态性

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摘要

A combination of an allele specific C-bulge probe and the fluorescent molecule N,N'-bis(3-aminopropyl)-2,7-diamino-1,8-naphthyridine (DANP) that binds specifically to the G bulge provides a method for single nucleotide polymorphism (SNP) typing with only one fluorescent molecule without covalent modification of the DNA probe. The allele specific G bulge probe contains one additional cytosine and produces a C-bulge directly flanking the SNP site upon hybridization to the target DNA. The C-bulge is a scaffold to recruit and retain DANP directly neighboring the SNP site. The DANP fluorescent probe was selectively modulated by the flanking matched and mismatched base pairs. The mutation type could be discriminated by the modulated fluorescent intensity with respect to the allele specific C-bulge probes used for the assay.
机译:等位基因特异性C-凸起探针与特异性结合G凸起的荧光分子N,N'-双(3-氨基丙基)-2,7-二氨基-1,8-萘啶(DANP)的组合提供了一种方法仅使用一个荧光分子进行单核苷酸多态性(SNP)分型,而无需对DNA探针进行共价修饰。等位基因特异的G凸出探针含有一个额外的胞嘧啶,并在与目标DNA杂交后直接在SNP位点产生C凸出。 C-凸起是在SNP位点附近直接募集和保留DANP的支架。 DANP荧光探针被侧翼匹配和错配碱基对选择性地调节。可以通过相对于用于测定的等位基因特异性C-凸起探针的调制荧光强度来区分突变类型。

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