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相关概念视频

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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RNA-seq03:21

RNA-seq

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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相关实验视频

Updated: Jan 7, 2026

Deciphering High-Resolution 3D Chromatin Organization via Capture Hi-C
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基准导向的染色体对染色体的 de novo 组装在使用低覆盖率高保真度长度读取与HiFiCCL的尺度上.

Zhongjun Jiang1,2, Weihua Pan3, Runtian Gao1,2

  • 1College of Life Science, Northeast Forestry University, Harbin, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|December 26, 2025
PubMed
概括

HiFiCCL是一个新的框架,用于组装低覆盖率,高可靠性测序数据,改善在人口基因组学中的结构变异检测. 这促进了大种群和多种物种的基因组组装.

关键词:
一个染色体一个染色体.长时间的高保真读取.覆盖率低,覆盖率低.人口基因组学 人口基因组学参考引导的 de novo 组件

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High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture 4C-seq
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High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture 4C-seq

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Hybrid De Novo Genome Assembly for the Generation of Complete Genomes of Urinary Bacteria using Short- and Long-read Sequencing Technologies
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相关实验视频

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High-throughput Identification of Gene Regulatory Sequences Using Next-generation Sequencing of Circular Chromosome Conformation Capture 4C-seq
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科学领域:

  • 基因组学和生物信息学
  • 人口遗传学 人口遗传学
  • 结构变异检测 结构变异检测

背景情况:

  • 在人口基因组学中,短读测序错过了结构变异 (SV),影响了全基因组关联研究中的遗传性.
  • 长读序列改进了基因组的构造,但高保真性数据是昂贵的,限制了大规模的人口研究.
  • 目前的组装器在低覆盖率的测序数据上表现不佳,需要改进的组装方法.

研究的目的:

  • 为了引入HiFiCCL,首个为低覆盖,高保真 (HiFi) 设计的组装框架读.
  • 解决现有组装器在低覆盖度测序场景中的局限性.
  • 提高在人口基因组学中的结构变异的检测.

主要方法:

  • 开发了HiFiCCL,这是一个以参考为导向的染色体对染色体组装框架.
  • 评估了HiFiCCL在低覆盖率HiFi读取的人类和植物数据集上的性能.
  • 与最先进的装配器相比,HiFiCCL与hifiasm相结合.

主要成果:

  • HiFiCCL提高了现有的低覆盖组装器的性能.
  • 在人类和植物数据集上,HiFiCCL的性能优于最先进的汇编器.
  • 在人类数据集 (~5×覆盖范围) 上,HiFiCCL与hifiasm的错误组装连接长度平均减少了21.19%.

结论:

  • HiFiCCL能够从低覆盖率的HiFi数据中进行强大的基因组组装,这对于大规模的人口基因组学至关重要.
  • 改进的组件可以更好地检测出大型生殖系结构变异,并最大限度地减少错误的支架.
  • HiFiCCL增强了使用泛基因组图的生殖线和瘤体质结构变异的发现.