相关实验视频
Updated: Jul 6, 2026

11:14
Primer-Free Aptamer Selection Using A Random DNA Library
Published on: July 27, 2010
选择性配对多化DNA基的选择性配对
1Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
Journal of the American Chemical Society
|March 12, 2004
概括
新型化DNA基对提供选择性配对,增强对不匹配的双重稳定性. 这些疏水类相似物显示出对直角遗传系统的潜力.
科学领域:
- 合成有机化学 合成有机化学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 自然的DNA基配对依赖于键.
- 探索替代的基配对系统可以扩大DNA的功能能力.
- 化有机分子具有独特的电子和疏水性质.
研究的目的:
- 为了研究使用化核酸相似物的新型,非结合的DNA基对.
- 评估这些合成基对DNA双重稳定性的影响.
- 评估这些类似物对直角遗传系统的潜力.
主要方法:
- 化核酸相似物 (四二和四二) 的合成.
- 构建包含这些类型的DNA复合体.
- 研究DNA化温度,以量化双重稳定性.
主要成果:
- 与非化对照组相比,化DNA复合体显示出更大的稳定性.
- 疏水类类似物相对于自然基对而言是不稳定的,但对不匹配而言是稳定的.
- 选择性配对很可能是由于避免在双层楼内使用溶剂来避免疏水表面而导致的.
结论:
- 多芳香基可以形成选择性,非结合的DNA基因对.
- 这些合成基提供了针对不匹配的增强稳定性.
- 潜在的应用包括开发与自然遗传系统直角的新基配对系统.
相关概念视频
Gene Conversion
Other than maintaining genome stability via DNA repair, homologous recombination plays an important role in diversifying the genome. In fact, the recombination of sequences forms the molecular basis of genomic evolution. Random and non-random permutations of genomic sequences create a library of new amalgamated sequences. These newly formed genomes can determine the fitness and survival of cells. In bacteria, homologous and non-homologous types of recombination lead to the evolution of new...
Conservative Site-specific Recombination and Phase Variation
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
DNA Isolation
DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...

