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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

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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: Jul 1, 2025

RNA Next-Generation Sequencing and a Bioinformatics Pipeline to Identify Expressed LINE-1s at the Locus-Specific Level
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CNCA对齐了一些小的注释基因组.

Jean-Noël Lorenzi1,2,3, François Graner4,5, Virginie Courtier-Orgogozo4,6

  • 1Université Paris Cité, Paris, France. jean-noel.lorenzi@ijm.fr.

BMC bioinformatics
|February 29, 2024
PubMed
概括
此摘要是机器生成的。

一个新的网络工具CNCA (Conserved Non-coding Sequence Aligner) 调整小基因组,包括非编码DNA,这对于像SARS-CoV-2起源这样的进化研究至关重要.

关键词:
有注释的基因组.核酸对齐的核酸对齐方式蛋白质对齐方式 蛋白质对齐方式

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科学领域:

  • 基因组学就是基因组学.
  • 生物信息学是一种生物信息学.
  • 进化生物学 进化生物学

背景情况:

  • 精确的序列对齐对于进化研究至关重要.
  • 调整密切相关的基因组,包括非编码区域,是一项挑战.
  • 现有的工具不能充分解决小,保存的基因组的对齐.

研究的目的:

  • 开发一种用于对齐小型,密切相关的基因组的新工具.
  • 将编码和非编码序列整合到一个单一的对齐中.
  • 为了促进进化分析,特别是像SARS-CoV-2这样的病毒基因组.

主要方法:

  • CNCA是一个基于Web的工具,可以接受GenBank文件.
  • 它执行初始核酸对齐,通过蛋白质序列对齐进行精细化.
  • 确保核酸-蛋白质对齐的一致性,并防止移.

主要成果:

  • CNCA产生了小基因组 (高达50kb) 的精确多核酸对齐.
  • 调整整合了编码和非编码序列.
  • 该工具保证了与蛋白质序列对齐匹配的无移对齐.

结论:

  • 通过包括非编码区域,CNCA可实现全面的基因组对齐.
  • 这种方法保存了进化信息,通常在传统方法中丢失.
  • 对于研究包括病毒在内的小型基因组的进化,CNCA非常有价值.