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相关概念视频

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...
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...
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 Nucleosome01:19

The Nucleosome

Human DNA is almost two meters long. However, it is compressed inside a tiny nucleus measuring only a few microns in diameter. To make this degree of compaction possible, DNA is organized into several sequential levels so that it can fit into such a tiny space. The most compact form of DNA is a chromosome that can be seen under a microscope in a dividing cell.
In a chromosome, DNA is wound twice around a protein complex called a histone octamer core, which consists of 8 histone proteins. This...

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相关实验视频

Updated: May 16, 2026

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

从DNA中自组装的三维结构

Yonggang Ke1, Luvena L Ong, William M Shih

  • 1Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA.

Science (New York, N.Y.)
|December 1, 2012
PubMed
概括
此摘要是机器生成的。

科学家们使用DNA,即短合成DNA链,创建了复杂的3D形状. 这些DNA块自组装成精确的结构,使得构建复杂的分子设计成为可能.

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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

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

Analyzing and Building Nucleic Acid Structures with 3DNA

Published on: April 26, 2013

相关实验视频

Last Updated: May 16, 2026

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
10:23

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles

Published on: May 8, 2015

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

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

Analyzing and Building Nucleic Acid Structures with 3DNA

Published on: April 26, 2013

科学领域:

  • 生物技术和合成生物学
  • 纳米技术和材料科学 纳米技术和材料科学
  • DNA纳米技术 DNA纳米技术

背景情况:

  • 复杂的三维 (3D) 结构在各种科学领域至关重要.
  • 目前用于构建纳米级3D对象的方法可能是复杂和耗时的.
  • DNA纳米技术为精确的分子组装提供了一个有前途的平台.

研究的目的:

  • 开发一种简单而强大的方法,使用DNA构建复杂的3D结构.
  • 为了证明合成DNA的自组装能力,将其变成预定义的形状.
  • 建立一个多功能平台,用于创建复杂的纳米级架构.

主要方法:

  • 使用短合成DNA链,称为"DNA",作为模块化组件.
  • 采用单步化反应,使数百个不同的DNA块自我组装.
  • 通过8个基对结合来定义分子相互作用,每个相互作用形成一个voxel.
  • 建立一个10x10x10 voxels的"分子画布"用于形状编程.

主要成果:

  • 成功构建了102个不同的3D形状,使用来自主收藏的DNA子子集.
  • 证明了创造复杂的表面特征,复杂的内部腔和道的能力.
  • 每个32个核酸DNA作为一个模块化组件,与四个局部邻居结合.
  • 每个DNA介导的相互作用定义了一个2.5 x 2.5 x 2.7纳米的voxel.

结论:

  • "DNA"方法为构建复杂的3D纳米结构提供了一种简单,强大和可扩展的方法.
  • 这种技术可以精确控制形状的复杂性,包括内部特征.
  • DNA为合成生物学,纳米技术及其他领域的应用提供了一个多功能平台.