相关实验视频
Updated: Jun 11, 2025
12:01
3' End Sequencing Library Preparation with A-seq2
Published on: October 10, 2017
10.5K
绝对定量和基本分辨率测序揭示了人体转录基因组中伪尿素的全面景观
Haiqi Xu1,2, Linzhen Kong1,2, Jingfei Cheng1,2
1Ludwig Institute for Cancer Research, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
Nature methods
|September 30, 2024
概括
一种名为BACS的新方法精确地绘制了RNA中的伪尿素 (Ψ),揭示了它在某些病毒中存在,但在其他病毒中不存在. 这种技术有助于理解RNA修饰及其作用.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 伪乌里丁 (Ψ) 是一种普遍存在的RNA修饰,但其功能意义尚不清楚.
- 现有的检测方法缺乏全面的 Ψ 分析所需的灵敏度和准确性.
- 精确地绘制 Ψ 对于理解其在 RNA 结构,功能和疾病中的作用至关重要.
研究的目的:
- 开发一种高度敏感和准确的方法,以单基分辨率对伪尿素 (Ψ) 进行定量分析.
- 研究 Ψ 在各种人类RNA和病毒基因组中的分布和丰度.
- 为了识别伪尿素合成酶的目标和序列动机.
主要方法:
- 开发和应用2-烯胺辅助循环测序 (BACS) 用于 Ψ 检测.
- BACS诱导了 Ψ-to-C 转换,使量化映射成为可能.
- 功能性研究涉及伪尿素合成酶的耗尽 (TRUB1,PUS7,PUS1).
主要成果:
- BACS精确地确定了 Ψ 位置,包括在密度更改区域和连续的尿素序列中.
- 检测到人类rRNA和结合体小核RNA中的所有已知的 Ψ 位;为小核RNA和tRNA生成定量地图.
- BACS同时检测到其他RNA修饰,并且耗尽实验阐明了合成酶标; 值得注意的是,在测试的病毒RNA中缺少 Ψ.
结论:
- BACS是一个强大的工具,用于高分辨率,在RNA中伪尿素的定量映射.
- 该研究为关键的人类RNA提供了全面的 Ψ 地图,并揭示了对伪尿素合成酶功能的洞察力.
- 在经过测试的病毒RNA中缺少 Ψ,这表明病毒家族之间有不同的RNA修饰策略.
更多相关视频
05:12Author Spotlight: AQRNA-seq Role in Mapping Small RNAs and Unraveling Protein Translation Mechanisms
Published on: February 2, 2024
685
05:412D-HELS MS Seq: A General LC-MS-Based Method for Direct and de novo Sequencing of RNA Mixtures with Different Nucleotide Modifications
Published on: July 10, 2020
1.9K
相关概念视频
03:21RNA-seq
9.8K
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...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
9.8K
02:24Ribosome Profiling
3.5K
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...
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...
3.5K