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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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The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
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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.
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Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
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DNA-Tethered RNA Polymerase for Programmable In vitro Transcription and Molecular Computation
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通过基128编码在DNA中存储图像.

Kun Wang1, Ben Cao2, Tao Ma3

  • 1The Key Laboratory of Advanced Design and Intelligent Computing, Ministry of Education, School of Software Engineering, Dalian University, Dalian 116622, China.

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概括

这项研究引入了DNA-base128编码,用于稳定的DNA图像存储. 它增强了数据处理,减少了错误,并提高了图像重建质量.

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科学领域:

  • 生物技术是生物技术.
  • 数据存储数据存储数据存储
  • 生物信息学是一种生物信息学.

背景情况:

  • 当前的DNA数据存储方法与图像数据的冗余性和相关性作斗争.
  • 现有的方案表现出较低的序列稳定性和较差的图像重建率.

研究的目的:

  • 提出一种新的基于DNA的图像存储方法,使用基128编码.
  • 为了提高存储在DNA中的图像的稳定性和重建精度.

主要方法:

  • 开发了对图像数据进行编码的DNA-base128.
  • 实现了数据细分,概率统计和约束编码.
  • 通过值设置和漂移比较进行集成的内部错误校正.

主要成果:

  • 减少了71.2-90.7%的不需要的DNA基因.
  • 减少了当地关氨酸-细胞氨酸含量变异的3倍.
  • 结构相似性指数 (SSIM) 和多尺度结构相似性 (MS-SSIM) 分别提高了19-102%和6.6-20.3%.

结论:

  • DNA-base128为DNA图像存储提供了稳定高效的解决方案.
  • 该方法提供了强大的内部纠错功能.
  • 与现有的DNA数据存储技术相比,实现了卓越的性能.