関連する実験動画
Updated: Aug 10, 2026
08:09
Mapping the Binding Site of an Aptamer on ATP Using MicroScale Thermophoresis
Published on: January 7, 2017
ATPを結合するRNAモチーフ
1Department of Genetics, Harvard Medical School, Boston, Massachusetts.
Nature
|August 5, 1993
まとめ
研究者たちは,ATPのような特定の標的と結合するRNA分子を見つけるための新しい方法を開発しました. この技術は,高親和性ATP結合を持つ小さなRNAモチーフを成功裏に分離し,重要な相互作用の詳細を明らかにしました.
科学分野:
- 分子生物学は分子生物学である.
- バイオケミストリー バイオケミストリー
- RNAセラピュティクス (RNAセラピュティクス) とは
背景:
- RNA分子は,特定の小分子リガンドを結合するように設計することができます.
- 大規模なランダムプールから高アフィニティRNA結合体を分離することは困難です.
- 既存の方法はしばしば固体支柱に依存しており,溶液相結合の発見を制限しています.
研究 の 目的:
- 溶液中の標的を結合するRNAリガンドを分離するための改善されたインビトロ選択方法を開発する.
- アデノシン三リン酸 (ATP) に高親密度で結合する新しいRNAモチーフを特定し,特徴づけること.
主な方法:
- ターゲットリガンドに結合するRNA分子を分離するために,新しいin vitro選択戦略が採用されました.
- 選択プロセスは,溶液に結合するRNAの分離を確保するために最適化されました.
- RNA-リガンド相互作用の特徴付けには,アナログおよび改変RNAとの結合測定法が含まれていました.
主要な成果:
- ATPに対する高い親和性を持つ小さなコンセンサスRNAモチーフが成功裏に分離されました.
- 選択されたRNAモチーフは,結合に不可欠な共通の二次構造を示しています.
- 詳細な分析により,ATP結合時に広範な接触と形状の変化が明らかになった.
結論:
- 新しい選択手順は,複雑な混合物から機能的なRNAリガンドを効果的に分離します.
- 特定されたATP結合RNAモチーフは,分子認識機構の洞察を提供します.
- この研究は,RNAベースのセンサーと治療法を設計するための基礎を提供します.
関連する概念動画
01:23RNA 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...
01:23RNA 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...
01:18ATP Synthase: Structure
ATP synthase or ATPase is among the most conserved proteins found in bacteria, mammals, and plants. This enzyme can catalyze a forward reaction in response to the electrochemical gradient, producing ATP from ADP and inorganic phosphate. ATP synthase can also work in a reverse direction by hydrolyzing ATP and generating an electrochemical gradient. Different forms of ATP synthases have evolved special features to meet the specific demands of the cell. Based on their specific feature, ATP...
01:19Allosteric Proteins-ATCase
Binding sites linkages can regulate a protein's function. For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis pathway,...
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis pathway,...
01:19RNA 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...
01:25Nucleic 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...