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Updated: Jun 16, 2026

06:59
Nanomanipulation of Single RNA Molecules by Optical Tweezers
Published on: August 20, 2014
金属,モチーフ,および5S rRNAドメインの結晶構造における認識
C C Correll1, B Freeborn, P B Moore
1Department of Molecular Biophysics and Biochemistry, Yale University, Howard Hughes Medical Institute, New Haven, Connecticut 06520-8114, USA.
Cell
|December 11, 1997
まとめ
ワトソン・クリック以外の塩基対と金属イオンによって形成されるユニークなRNA構造が,タンパク質の認識をどのように可能にするかを発見します. この研究は,生物学的相互作用とタンパク質結合に不可欠な新しいRNAの形を明らかにしています.
科学分野:
- 分子生物学は分子生物学である.
- 構造生物学 構造生物学とは
- バイオケミストリー バイオケミストリー
背景:
- ワトソン・クリック以外の塩基対と金属イオンは,RNAの構造と機能において重要な役割を果たします.
- 特定のRNA構造モチーフは,タンパク質による認識に不可欠であり,生物学的プロセスに影響を与えます.
研究 の 目的:
- RNA分子におけるタンパク質認識の構造的基礎を解明する.
- タンパク質結合のためのRNAの形成における非正規の塩基配列と金属イオン協調の役割を特徴づける.
主な方法:
- X線結晶学を用いて,RNAドメインの高解像度構造を決定した.
- 認識に関与するRNA-タンパク質相互作用と構造的モチーフの分析.
主要な成果:
- E. coli 5SリボソームRNAの62ntドメインの結晶構造と,E. coliの内部ループを持つデデカメアの二重構造の結晶構造を決定した.
- ループE領域内で3つの"クロス・ストランド・ピュリン・スタック"と3つの新しい,水媒介の非正規塩基対を特定した.
- 独特のRNA構造を安定させる"4つの金属イオンジッパー"を明らかにし,タンパク質L25の認識のために特定の水素結合表面を作成しました.
結論:
- ワトソン・クリック以外の塩基配列と金属イオン協調は,特定のタンパク質の認識を容易にするユニークなRNA形状を生み出します.
- ループEの特定された構造的特徴は,リボソームタンパク質L25の結合に不可欠であり,RNA-タンパク質相互作用のメカニズムを強調しています.
関連する概念動画
RNA Structure
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...
Conserved Binding Sites
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally analyses the...
RNA Structure
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...
Directing Proteins to the Rough Endoplasmic Reticulum
The organelle-specific signaling sequences direct proteins synthesized in the cytosol to their final destination like ER, mitochondria, peroxisomes, etc. Some of the proteins directed to ER are then trafficked via vesicles to other organelles within the cell or the extracellular environment through the Golgi complex. For example, the rough ER synthesizes soluble proteins for transportation to the lysosomes or secretion out of the cell. It can also synthesize transmembrane proteins that can...
RNA Structure
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...
Nucleic Acid Structure
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 has a double-helix structure. The...
DNA Structure
DNA has a double-helix structure. The...

