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相关概念视频

The DNA Helix01:16

The DNA Helix

Overview
The DNA Helix01:16

The DNA Helix

Overview
DNA as a Genetic Template02:05

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
The DNA Helix01:07

The DNA Helix

Deoxyribonucleic acid, or DNA, is the genetic material responsible for passing traits from generation to generation in all organisms and most viruses. DNA is composed of two strands of nucleotides that wind around each other to form a spring-like structure called a double helix. However, the double helix is not perfectly symmetrical. Instead, there are regularly occurring grooves in the structure. The major groove occurs where the sugar-phosphate backbones are relatively far apart. This space...
DNA as a Genetic Template02:05

DNA as a Genetic Template

Two structural features of the DNA molecule provide a basis for the mechanisms of heredity: the four nucleotide bases and its double-stranded nature. The Watson-Crick model of double-helical DNA structure, proposed in 1952, drew heavily upon the X-ray crystallography work of researchers Rosalind Franklin and Maurice Wilkins. Watson, Crick, and Wilkins jointly received the Nobel Prize in Physiology or Medicine for their work in 1962. Franklin was, controversially, excluded from the prize for...
Nucleic Acid Structure01:25

Nucleic Acid Structure

The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA has a double-helix structure. The...

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相关实验视频

Updated: Jul 18, 2026

Analyzing and Building Nucleic Acid Structures with 3DNA
16:24

Analyzing and Building Nucleic Acid Structures with 3DNA

Published on: April 26, 2013

尼龙/DNA:单链DNA具有共价接的尼龙层.

Lei Zhu1, Philip S Lukeman, James W Canary

  • 1Department of Chemistry, New York University, New York, New York 10003, USA.

Journal of the American Chemical Society
|August 21, 2003
PubMed
概括

研究人员为先进的分子结构开发了DNA/尼龙梯形寡合体. 这种DNA纳米技术使得新的拓物体和网络成为可能,在反意义疗法中具有潜在的应用.

科学领域:

  • 生物化学 生物化学
  • 有机化学 有机化学
  • 纳米技术 纳米技术

背景情况:

  • 寡核酸 (ODN) 在分子生物学和纳米技术中至关重要.
  • 开发像DNA/尼龙梯子寡合体这样的新型结构是先进应用的关键.
  • DNA纳米技术为构建复杂的分子架构提供了多功能平台.

研究的目的:

  • 描述新型DNA/尼龙梯子寡合体的合成.
  • 为修改的ODN和胺键形成建立协议.
  • 探索这些结构在DNA纳米技术和治疗领域的潜力.

主要方法:

  • 合成2'-β-替代的光胺.
  • 开发对氨基和炭基组修改的ODN的去保护/净化协议.
  • 在ODN上形成胺基键的反应用于梯子结构组装.

主要成果:

  • 成功合成了DNA/尼龙梯子寡合体.
  • 已建立的处理修改ODN和执行合反应的协议.
  • 展示了一种新的基于DNA的梯子寡合体结构.

结论:

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Studying DNA Looping by Single-Molecule FRET
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Studying DNA Looping by Single-Molecule FRET

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Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
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Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

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相关实验视频

Last Updated: Jul 18, 2026

Analyzing and Building Nucleic Acid Structures with 3DNA
16:24

Analyzing and Building Nucleic Acid Structures with 3DNA

Published on: April 26, 2013

Studying DNA Looping by Single-Molecule FRET
11:27

Studying DNA Looping by Single-Molecule FRET

Published on: June 28, 2014

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules
09:32

Stable DNA Motifs, 1D and 2D Nanostructures Constructed from Small Circular DNA Molecules

Published on: April 12, 2019

  • 开发的技术为合成拓分子对象和网络提供了一条途径.
  • 基于DNA的梯子寡合体是一种新的结构,在DNA纳米技术中具有潜力.
  • 这些寡合物在反意义领域的应用方面表现有前途.