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相关概念视频

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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Ribosome Profiling02:24

Ribosome Profiling

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
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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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相关实验视频

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Genetic Mapping of Thermotolerance Differences Between Species of Saccharomyces Yeast via Genome-Wide Reciprocal Hemizygosity Analysis
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使用细菌Rend-seq数据集对转录边界进行全基因组的注释.

Andreas C Lawaetz1, Lauren A Cowley1,2, Emma L Denham1

  • 1Life Sciences Department, University of Bath, Claverton Down, Bath, BA2 7AY, UK.

Microbial genomics
|April 26, 2024
PubMed
概括

这项研究介绍了pyRAP,这是一个新的软件工具,可以精确地绘制细菌基因组中的RNA转录. pyRAP通过识别新型转录和非编码RNA来改善基因组注释,增强RNA-seq数据分析.

关键词:
这种细菌是 Bacillus subtilis.埃舍里希亚大肠杆菌 (Escherichia coli) 是一个大肠杆菌.在Rend-seqq.黄金葡萄球菌黄金葡萄球菌pyRAPP pyRAP的使用方法它们是sRNARNA.

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A Fast and Reliable Pipeline for Bacterial Transcriptome Analysis Case study: Serine-dependent Gene Regulation in Streptococcus pneumoniae
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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.
  • 分子生物学分子生物学

背景情况:

  • 准确的基因组注释对于RNA-seq分析和理解基因调节至关重要.
  • 现有的基因组注释往往缺乏关于未翻译区域 (UTR) 和非编码RNA的详细信息.
  • 目前的方法难以整合多样化的RNA-seq数据,导致转录元素的误解.

研究的目的:

  • 开发一种计算工具,用于精确的全基因组转录边界分辨率.
  • 为了提高未翻译区域和非编码RNA的注释准确度.
  • 为了促进各种RNA-seq数据集的分析,包括Rend-seq.

主要方法:

  • 开发pyRAP (python Rend-seq Annotation Pipeline),这是一个用于分析Rend-seq数据的软件包.
  • 应用pyRAP以单核酸分辨率识别转录边界.
  • 为关键细菌物种生成更新的注释文件.

主要成果:

  • pyRAP成功地确定了新型的转录,转录异型和RNase依赖的小RNA (sRNA) 处理事件.
  • 在 *Bacillus subtilis* 中,有63个新的转录和数千个UTR和非编码RNA被注释.
  • 在大肠杆菌和黄金杆菌中,pyRAP识别了许多新的转录,并注释了广泛的UTR和非编码RNA元素.
  • 为*B. subtilis*,*E. coli*和*S. aureus*生成了更新的注释文件.

结论:

  • pyRAP精确地解决了转录边界,克服了当前基因组注释中的局限性.
  • 该管道增强了在细菌基因组中发现新型转录和非编码RNA的发现.
  • 由pyRAP制作的更新注释文件将有利于微生物基因组学研究.