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Sequence analysis of genomic regions containing trinucleotide repeats isolated by a novel cloning method.

机译:通过新型克隆方法分离的包含三核苷酸重复序列的基因组区域的序列分析。

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摘要

A method was developed for effective isolation of trinucleotide repeats from genomic DNA. This method is based on the DNA polymerase reaction, which is restricted with only two or three nucleotide substrates and primed by biotinylated oligonucleotide probes. Sequences are then isolated by a streptavidin biotin-trapping method. More than 80% of the clones from each library contained more than eight trinucleotide repeats. Sequence analysis showed that the characteristic dinucleotide flanking sequences usually confronting various trinucleotide repeats are not found in the vicinity of CAG repeats, suggesting that CAG repeats may have been generated through a mechanism different from that of other trinucleotide repeats. Copyright 1999 Academic Press.
机译:开发了一种从基因组DNA有效分离三核苷酸重复序列的方法。此方法基于DNA聚合酶反应,该反应仅受两个或三个核苷酸底物限制,并由生物素化的寡核苷酸探针引发。然后通过链霉亲和素生物素捕获方法分离序列。每个文库中超过80%的克隆包含八个以上的三核苷酸重复序列。序列分析表明,在CAG重复序列附近没有发现通常面对各种三核苷酸重复序列的特征性二核苷酸侧翼序列,这表明CAG重复序列可能是通过不同于其他三核苷酸重复序列的机制产生的。版权所有1999 Academic Press。

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