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相关概念视频

DNA as a Genetic Template02:05

DNA as a Genetic Template

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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...
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DNA as a Genetic Template02:05

DNA as a Genetic Template

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Genome Annotation and Assembly03:36

Genome Annotation and Assembly

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The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
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DNA Packaging00:58

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Assembly of Cytoskeletal Filaments01:18

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Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
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相关实验视频

Updated: Feb 17, 2026

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

Published on: May 8, 2015

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千兆尺度的可编程形状DNA组件

Klaus F Wagenbauer1, Christian Sigl1, Hendrik Dietz1

  • 1Technical University of Munich, Physics Department and Institute for Advanced Study, Am Coulombwall 4a, 85748 Garching bei München, Germany.

Nature
|December 9, 2017
PubMed
概括
此摘要是机器生成的。

研究人员将DNA原形与自然组合原理结合起来, 创造出大型复杂的生物分子结构. 这种DNA纳米技术的方法使得千兆尺寸的物体能够自组装,并且具有可控的尺寸和高效率.

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Design and Synthesis of a Reconfigurable DNA Accordion Rack
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相关实验视频

Last Updated: Feb 17, 2026

Self-assembly of Complex Two-dimensional Shapes from Single-stranded DNA Tiles
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Published on: May 8, 2015

12.2K
Design and Synthesis of a Reconfigurable DNA Accordion Rack
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Folding and Characterization of a Bio-responsive Robot from DNA Origami
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Folding and Characterization of a Bio-responsive Robot from DNA Origami

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科学领域:

  • 生物分子自组
  • DNA纳米技术
  • 合成生物学

背景情况:

  • 自然的自我限制层次的寡合化是形成像病毒这样复杂的生物分子组件的关键.
  • 用新型蛋白质设计和DNA纳米技术模仿这些自然组装能力是创造大型复杂的人工结构的挑战.

研究的目的:

  • 结合自然组装原理与DNA原木方法来自下而上构建千兆尺度的人工结构.
  • 通过使用DNA原始结构构建复杂,精确的结构.

主要方法:

  • 使用DNA序列信息来编码DNA原始体的构建模块.
  • 通过构造块的几何和相互作用来控制更高层次的组装,决定副本的数量,位置和方向.
  • 采用了经过验证的结构和相互作用模式的刚性构件,用于自限,平衡驱动的等级组装.

主要成果:

  • 成功创建了大型DNA组件,包括平面环 (直径高达350纳米,330兆),厚管 (长度为微米) 和3D多面体 (直径高达1.2兆,450纳米).
  • 通过自我限制的层次过程实现高达90%的高效组装产量,允许纠错.
  • 对人工结构的尺寸,形状和复杂性进行精确控制.

结论:

  • 开发的DNA原形策略使人造结构的自我组装能够接近病毒和细胞器官的大小.
  • 这种模块化和可定位的方法有助于创建具有明确尺寸的多种复杂结构.
  • 该方法为纳米技术和合成生物学中自下而上的建设提供了一个强大的平台.