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相关概念视频

Genomic DNA in Eukaryotes00:58

Genomic DNA in Eukaryotes

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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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Overview
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Next-generation Sequencing03:00

Next-generation Sequencing

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The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
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DNA Microarrays02:34

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Microarrays are high-throughput and relatively inexpensive assays that can be automated to analyze large quantities of data at a time. They are used in genome-wide studies to compare gene or protein expression under two varied conditions, such as healthy and diseased states. Microarrays consist of glass or silica slides on which probe molecules are covalently attached through surface functionalization. Most commonly, the slides are prepared through the chemisorption of silanes to silica...
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DNA as a Genetic Template02:05

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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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Updated: Jun 7, 2025

High-Density DNA and RNA microarrays - Photolithographic Synthesis, Hybridization and Preparation of Large Nucleic Acid Libraries
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基于编码的自适应算术编码方法,用于高密度的DNA存储.

Yingxin Hu1, Yanjun Liu1, Yuefei Yang1

  • 1College of Information Science and Technology, Shijiazhuang Tiedao University, Shijiazhuang, China.

Journal of computational biology : a journal of computational molecular cell biology
|November 15, 2024
PubMed
概括
此摘要是机器生成的。

一种新的DNA编码方法提高了数据存储密度和完整性. 这种方法使用自适应算法编码 (AAC) 来进行压缩,八进制哈明代码用于错误校正,以及3-2代码用于生物化学兼容性,提高了DNA数据存储效率.

关键词:
储存 DNA DNA 的储存适应式算术编码的编码编码约束的编码限制哈明 (Hamming) 的错误纠正代码绘图方法 绘图方法

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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:

  • 传统的数据存储面临着大数据和人工智能的局限性.
  • DNA存储提供了优越的容量,密度,能源效率和寿命.
  • 有效的DNA编码对于将数字数据转换为DNA序列至关重要.

研究的目的:

  • 引入一种用于DNA数据存储的新型编码方法.
  • 为了提高数据压缩,错误纠正和生物化学兼容性在DNA存储.

主要方法:

  • 开发了一个三相编码过程:压缩,错误纠正和映射.
  • 使用基于部分匹配 (PPM) 的自适应算法编码 (AAC) 进行压缩的预测.
  • 实现了错误纠正的八进制哈明代码和生物化学约束的"3-2代码".

主要成果:

  • 达到平均编码密度为每核酸3.25个基.
  • 稳定GC含量为50%,并将同聚合物长度限制在最多2.
  • 在各种文件格式 (文本,图片,音频) 中展示了有效的数据完整性保护和增强的存储密度.

结论:

  • 拟议的DNA编码方法显著提高了存储密度和数据完整性.
  • 该方法具有强大的错误纠正能力,适用于各种数据类型.
  • 这种方法解决了DNA数据存储的关键挑战,为实际应用铺平了道路.