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首页> 外文期刊>Nucleic Acids Research >S-1 NUCLEASE HYBRID ANALYSIS OF MITOCHONDRIAL DNA AMPLIFIED BY LONG-DISTANCE PCR - RAPID SCREENING FOR SMALL-SCALE REARRANGEMENTS
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S-1 NUCLEASE HYBRID ANALYSIS OF MITOCHONDRIAL DNA AMPLIFIED BY LONG-DISTANCE PCR - RAPID SCREENING FOR SMALL-SCALE REARRANGEMENTS

机译:长距离PCR扩增的线粒体DNA S-1核酸杂交分析-快速筛选小范围的重组

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摘要

We report on a method suitable for screening large regions (>3 kb) of mtDNA for structural changes of <500 bp and their localization. Heteroduplexes consisting of a wild-type and a mutant strand are cleaved by S-1 nuclease when single-stranded loops are present due to deletions or duplications/insertions. This strategy was successfully applied to screen the muscle mtDNA of 20 patients with mitochondrial encephalomyopathies. In three of them, an altered cleavage pattern was observed caused by a homoplasmic 9 bp deletion as shown by subsequent mapping and sequencing studies.
机译:我们报告了一种适合筛选mtDNA大区域(> 3 kb)的方法,用于<500 bp的结构变化及其定位。当由于缺失或重复/插入而存在单链环时,由S-1核酸酶切割由野生型和突变链组成的异源双链体。该策略已成功应用于筛查20例线粒体脑脊髓病患者的肌肉mtDNA。在其中的三个中,观察到了由同质9 bp缺失引起的切割模式改变,如随后的作图和测序研究所示。

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