ADAR2 dsRBM-RNA复合体的溶液结构显示了小槽的特定序列的读数
Richard Stefl1, Florian C Oberstrass, Jennifer L Hood
1Institute of Molecular Biology and Biophysics, ETH Zurich, CH-8093 Zürich, Switzerland.
Cell
|October 16, 2010
概括
研究人员发现了蛋白质如何识别特定的双链RNA (dsRNA) 序列. 这是一种ADAR2酶.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 结构生物学 结构生物学
背景情况:
- 蛋白质对双链DNA (dsDNA) 的特定序列识别是可以理解的.
- 蛋白质对双链RNA (dsRNA) 的序列特定识别在很大程度上是未知的.
- 作用于RNA (ADARs) 的腺胺解酶对于通过腺胺解酶重新编码基因组信息至关重要.
研究的目的:
- 通过ADAR2双链RNA结合基因 (dsRBMs) 阐明dsrna序列识别的分子机制.
- 为 dsRBM 如何识别 dsRNA 的形状和序列提供结构基础.
- 了解dSRBM-dsRNA相互作用在RNA编辑和结合亲缘关系中的作用.
主要方法:
- 确定ADAR2 dsRBMs与特定的mRNA前干循环结合的溶液结构.
- 结构分析以确定dsrbms和dsrna之间的分子相互作用.
主要成果:
- 这项研究揭示了ADAR2 dsRBMs与干环前mRNA结合的溶液结构.
- dsRBMs识别了dsRNA的形状,以及其主要序列.
- 直接序列读取通过dsRNA的小槽发生.
结论:
- 这些发现为dsrbms的序列特定dsrna识别提供了分子基础.
- 这种识别机制对于在GluR-2 R/G部位的编辑和结合亲缘关系至关重要.
- 这项研究为许多包含dSRBM的蛋白质在转录后基因调节中的序列特异悖论提供了潜在的解决方案.
相关概念视频
01:23RNA Structure
80.8K
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
80.8K
01:19RNA Structure
8.3K
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
8.3K
01:23RNA Structure
29.8K
No description available
29.8K
01:25Nucleic Acid Structure
10.3K
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
DNA Structure
DNA...
10.3K
03:21RNA-seq
12.5K
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...
12.5K