相关实验视频
Updated: Aug 15, 2026
10:23
Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
Published on: May 8, 2015
刚性DNA构建块的快速合组装用于分子纳米制造
R P Goodman1, I A T Schaap, C F Tardin
1Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford OX1 3PU, UK.
Science (New York, N.Y.)
|December 13, 2005
概括
研究人员开发了用于3D分子纳米制造的新型DNA四面体. 这些纳米级结构快速自组装,为先进的分子工程应用提供了稳定和可适应的构建块.
科学领域:
- 分子纳米制造 分子纳米制造
- DNA DNA 纳米技术 纳米技术
- 材料科学 材料科学 材料科学
背景情况:
- 三维分子纳米制造需要简单,纯立体,刚性和适应性的组件.
- 现有的方法在同时实现这些特性时可能面临挑战.
研究的目的:
- 报告一个新的DNA四面体家族用于3D分子纳米制造.
- 为了证明它们的自组装,结构稳定性和适应性.
主要方法:
- DNA四面体的自我组装 (小于10nm).
- 使用可编程DNA链接器进行组装.
- 原子力显微镜用于机械测试.
主要成果:
- DNA四面体在几秒钟内自组装,其产量接近一个二聚体的数量产量.
- 三角建筑提供了结构稳定性.
- 测量了DNA的轴向压缩性和双螺旋在负载下曲.
结论:
- 报告的DNA四面体是3D分子纳米制造的有希望的构建块.
- 它们的快速自组装和可调节性质提供了显著的优势.
- 机械研究为DNA在压力下的行为提供了洞察力.
相关概念视频
00:58Genomic DNA in Eukaryotes
Eukaryotes have large genomes compared to prokaryotes. To fit their genomes into a cell, eukaryotic DNA is packaged extraordinarily tightly inside the nucleus. To achieve this, DNA is tightly wound around proteins called histones, which are packaged into nucleosomes that are joined by linker DNA and coil into chromatin fibers. Additional fibrous proteins further compact the chromatin, which is recognizable as chromosomes during certain phases of cell division.
00:58DNA Packaging
Overview
00:58DNA Packaging
Overview
03:01The Replisome
DNA replication is carried out by a large complex of proteins that act in a coordinated matter to achieve high-fidelity DNA replication. Together this complex is known as the DNA replication machinery or the replisome.
The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with the...
The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with the...
03:01The Replisome
DNA replication is carried out by a large complex of proteins that act in a coordinated matter to achieve high-fidelity DNA replication. Together this complex is known as the DNA replication machinery or the replisome.
The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with the...
The synthesis of the leading and lagging strands is a highly coordinated process. To explain this, the “Trombone model” was proposed by Bruce Alberts in 1980. The DNA loop formation starts when a primer is synthesized on the parent lagging strand. The loop grows with the...
01:19The 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...
In a chromosome, DNA is wound twice around a protein complex called a histone octamer core, which consists of 8 histone proteins. This...