小さな詳細は重要:RNAのコンフォーマーションスイッチとしての2'-ヒドロキシル
Leonardo Darré1,2, Ivan Ivani1,2, Pablo D Dans1,2
1Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology , 08028 Barcelona, Spain.
Journal of the American Chemical Society
|December 14, 2016
まとめ
リボ核酸 (RNA) の2'OHグループは,その3D構造と機能に影響を与える. タンパク質は2'OH構成を変化させ,RNA構造を制御し,タンパク質-RNA認識に影響を与える.
科学分野:
- 生物化学
- 分子生物学
- 構造生物学
背景:
- リボ核酸 (RNA) は,多様な細胞機能に不可欠な複雑な3D構造を示しています.
- RNAの2'-ヒドロキシル (2'-OH) グループは,その形状の柔軟性と相互作用ネットワークに大きな影響を及ぼします.
- RNAの構造的動態を理解することは 機能的な多様性を解読する鍵です
研究 の 目的:
- RNA 構造の調節における 2'OH グループの構造の役割を調査する.
- タンパク質が2'OH形状を調節し,RNA糖分に及ぼす影響について調べる.
- タンパク質とRNAの認識における分子スイッチとしての2'OH群の機能を明らかにする.
主な方法:
- RNA構造のデータベース分析
- 広範な分子ダイナミクス (MD) シミュレーション
- 量子力学 (QM) とQM/分子力学 (QM/MM) のハイブリッドシミュレーション
主要な成果:
- 2'OHの構成がRNAの糖質形成に有意な影響を及ぼす直接的な証拠
- 計算によると,タンパク質は2'OHの形状を変化させ,糖の再発を引き起こします.
- 生物活性RNA構造の形成における重要な要因として2'OH群の識別.
結論:
- 2'OHグループは,タンパク質とRNAの相互作用における重要な分子スイッチとして作用する.
- タンパク質による2'OH構成の調節は,RNAの構造と機能を制御するメカニズムである.
- この研究は,特定のタンパク質-RNA認識の構造的基礎についての洞察を提供します.
関連する概念動画
RNA Structure
8.0K
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...
8.0K
RNA Structure
79.8K
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...
79.8K
Riboswitches
10.0K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
10.0K
RNA Stability
36.0K
Intact DNA strands can be found in fossils, while scientists sometimes struggle to keep RNA intact under laboratory conditions. The structural variations between RNA and DNA underlie the differences in their stability and longevity. Because DNA is double-stranded, it is inherently more stable. The single-stranded structure of RNA is less stable but also more flexible and can form weak internal bonds. Additionally, most RNAs in the cell are relatively short, while DNA can be up to 250 million...
36.0K
Transcriptional Regulation: Riboswitches
979
Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
979
Types of RNA
10.2K
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
10.2K


