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相关概念视频

Maxam-Gilbert Sequencing01:05

Maxam-Gilbert Sequencing

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In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
The...
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Restriction Enzymes01:11

Restriction Enzymes

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Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
The host bacteria protect their own genomic DNA from these enzymes by methylating these sites. Some...
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相关实验视频

Updated: Jul 18, 2025

Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids
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Sequence-specific and Selective Recognition of Double-stranded RNAs over Single-stranded RNAs by Chemically Modified Peptide Nucleic Acids

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序列选择性双重形成和模板效应在识别编码的oligoanilines中.

Daniele Rosa-Gastaldo1, Andrea Dalla Valle1, Tommaso Marchetti1

  • 1Dipartimento di Scienze Chimiche, Università degli studi di Padova via Marzolo 1 35131 Padova Italy luca.gabrielli@unipd.it.

Chemical science
|August 25, 2023
PubMed
概括

研究人员开发了用于序列选择性双重组形成和模板合成的新型寡合体. 这些识别编码的寡合体利用H键单元,并表现出增强的稳定性,从而实现精确的分子组装.

科学领域:

  • 超分子化学 超分子化学
  • 有机化学 有机化学
  • 材料科学 材料科学 材料科学

背景情况:

  • 能够进行序列选择性识别的寡合体对于先进的分子系统至关重要.
  • 开发用于控制寡合体组合的合成方法仍然是一个挑战.

研究的目的:

  • 设计和合成一种新的双重形成的识别编码的寡合体家族.
  • 调查它们的序列选择性双重形成和模板导向合成能力.
  • 探索H键识别单元在控制组装中的作用.

主要方法:

  • 用H键识别单元 (2-trifluoromethylphenol或氧化物) 功能化的单体.
  • 在基中进行F和HNMR光谱,以研究双重形成.
  • 模板导向合成的动态组合化学.

主要成果:

  • 通过设计的骨干来防止不必要的折叠,实现了序列选择性的双重形成.
  • 与平行安排相比,在反平行双重组中显示的稳定性高出3倍.
  • 通过使用氨酸二聚合物,成功模拟了互补胺的合成.

结论:

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Protocol for the Solid-phase Synthesis of Oligomers of RNA Containing a 2'-O-thiophenylmethyl Modification and Characterization via Circular Dichroism
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Protocol for the Solid-phase Synthesis of Oligomers of RNA Containing a 2'-O-thiophenylmethyl Modification and Characterization via Circular Dichroism

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Protocol for the Solid-phase Synthesis of Oligomers of RNA Containing a 2'-O-thiophenylmethyl Modification and Characterization via Circular Dichroism

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  • 开发的寡合物表现出可控制的序列选择性双重组形成和模板导向合成.
  • 键识别单元是区分特定单体和确保系统忠实性的关键.
  • 该系统为先进的分子构造和识别研究提供了一个有前途的平台.