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高效的颜色测量和核酸的视觉检测使用不对称地分裂的过氧化酶DNA酶
Minggang Deng1, Dan Zhang, Yangyang Zhou
1College of Chemistry and Molecular Sciences, Key Laboratory of Biomedical Polymers of Ministry of Education, Wuhan University, Hubei, Wuhan, 430072, PR of China.
Journal of the American Chemical Society
|September 4, 2008
概括
这项研究引入了一种新的分裂G-四重复DNA酶,用于敏感单核酸多态 (SNP) 检测. 这种G-四重复氧化酶DNA酶能够在室温下肉眼对SNP进行色度识别.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 纳米技术纳米技术
背景情况:
- 复杂的G-四重体DNA结构与hemin作为生物传感的过氧化酶DNA酶.
- 富含瓜的血红素结合DNA体,折叠成G-四重复体并结合血红素.
研究的目的:
- 开发一种新的分裂模式,用于半膜结合的DNA体,以创建一个G-四重复氧化酶DNA酶.
- 利用这种DNA酶对单核酸多态 (SNP) 的敏感和可见识别.
主要方法:
- 开发了一种3:1分离模式,将半膜结合DNA体分为三重复和一重复的部分.
- 分裂的G-四重复氧化酶DNA酶被用作SNP识别的探针.
- 用色度检测用于在室温下生成可见信号.
主要成果:
- 3: 1 分割的G-四重复氧化酶DNA酶通过短探头实现了SNP的nM检测极限.
- 一个竞争战略使得使用更长的探针能够有效地识别SNP.
- 使用竞争策略证明了在总目标DNA中检测到低至5%的突变.
结论:
- 分裂的G-四重复氧化酶DNA酶为SNP识别提供了一种敏感和可见的方法.
- 3:1分割模式和竞争策略为SNP检测提供了多功能方法.
- 这种方法对临床诊断和遗传分析具有前景.
相关概念视频
03:31Labeling DNA Probes
DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...
02:57Southern Blot
Agarose gel electrophoresis is very useful in separating DNA fragments by size. Running a DNA ladder containing fragments of the known length alongside the sample helps determine the approximate length of the sample DNA fragments. However, additional steps are needed to verify the sequence identity of the sample DNA fragments.
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...