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関連する概念動画

RNA Structure01:23

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...
RNA Structure01:23

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...
RNA Structure01:19

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...
RNA Stability01:53

RNA Stability

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...
RNA Stability01:53

RNA Stability

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...
Nucleic Acid Structure01:25

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...

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関連する実験動画

Updated: Jun 28, 2026

RNA Secondary Structure Prediction Using High-throughput SHAPE
13:42

RNA Secondary Structure Prediction Using High-throughput SHAPE

Published on: May 31, 2013

時間分解したRNA SHAPE化学

Stefanie A Mortimer1, Kevin M Weeks

  • 1Department of Chemistry, University of North Carolina, Chapel Hill, North Carolina 27599-3290, USA.

Journal of the American Chemical Society
|November 13, 2008
PubMed
まとめ
この要約は機械生成です。

この研究は,RNAの折りたたみ動力学の時間分解したSHAPE化学を導入します. それは,RNAの三次構造が2つのステップで形成され,長距離の相互作用が全体的な折り畳み速度を制限することを明らかにします.

さらに関連する動画

Using In Vitro and In-cell SHAPE to Investigate Small Molecule Induced Pre-mRNA Structural Changes
11:58

Using In Vitro and In-cell SHAPE to Investigate Small Molecule Induced Pre-mRNA Structural Changes

Published on: January 30, 2019

Comparative RNA Structure Analysis of Nascent and Mature Transcripts in Saccharomyces cerevisiae
09:12

Comparative RNA Structure Analysis of Nascent and Mature Transcripts in Saccharomyces cerevisiae

Published on: February 27, 2026

関連する実験動画

Last Updated: Jun 28, 2026

RNA Secondary Structure Prediction Using High-throughput SHAPE
13:42

RNA Secondary Structure Prediction Using High-throughput SHAPE

Published on: May 31, 2013

Using In Vitro and In-cell SHAPE to Investigate Small Molecule Induced Pre-mRNA Structural Changes
11:58

Using In Vitro and In-cell SHAPE to Investigate Small Molecule Induced Pre-mRNA Structural Changes

Published on: January 30, 2019

Comparative RNA Structure Analysis of Nascent and Mature Transcripts in Saccharomyces cerevisiae
09:12

Comparative RNA Structure Analysis of Nascent and Mature Transcripts in Saccharomyces cerevisiae

Published on: February 27, 2026

科学分野:

  • バイオケミストリー バイオケミストリー
  • 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

背景:

  • プライマー拡張 (SHAPE) によって分析された選択的2'-ヒドロキシルアシレーションは,RNA構造の単核酸解像度を提供します.
  • 既存のSHAPE方法は,均衡構造には適しているが,運動研究には限られている.
  • RNAの折り畳みダイナミクスを理解することは,生物学的機能を解明するために非常に重要です.

研究 の 目的:

  • RNAの折りたたみに関する運動学的研究のために,時間分解したSHAPE化学を開発する.
  • RNAの折りたたみ中の三次相互作用の段階的形成を調査する.
  • RNase P特異性ドメインRNAの折りたたみにおける速度を制限するステップを決定する.

主な方法:

  • 急速な運動測定のためのベンゾイルシアン酸エスカフォールドを使用してSHAPE化学の拡張 (約. 1秒のスナップショット).
  • RNase P特異性ドメインRNAの折り畳みを監視するために,時間分解のSHAPEの適用.
  • ニュクレオチドの柔軟性と反応性の分析により,時間の経過とともに構造的な変化を推論する.

主要な成果:

  • RNase PRNAドメインの三次相互作用は,2つの異なる運動段階で形成されます.
  • 局所的三次接触は,遠距離の相互作用よりもかなり速く形成されます.
  • 全体的な折り畳みは,遠隔の相互作用の同時形成によって速度が制限され,非本来の構造の破壊によって制限されません.

結論:

  • 時間分解のSHAPE化学は,単核酸分解でRNAの折りたたみに関する簡単な運動学的研究を可能にします.
  • RNAの折りたたみには明確な段階があり,長距離三次接触の形成は速度を制限する重要なステップです.
  • この方法論は,様々な生物学的文脈におけるRNAの構造的動力学と構成的変化を研究するための大きな可能性を秘めています.