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RNA Structure01:23

RNA Structure

79.1K
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...
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RNA Structure01:19

RNA Structure

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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...
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Chromatin Structure and RNA Splicing02:41

Chromatin Structure and RNA Splicing

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RNA Stability01:53

RNA Stability

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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...
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Eukaryotic RNA Polymerases00:58

Eukaryotic RNA Polymerases

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RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
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Bacterial RNA Polymerase00:43

Bacterial RNA Polymerase

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Unlike eukaryotes, bacteria use a single RNA Polymerase (RNAP) to transcribe all genes. The different subunits of bacterial RNAPhave distinct functions. The multisubunit structure of the bacterial RNAP helps the enzyme to maintain catalytic function, facilitate assembly, interact with DNA and RNA, and self-regulate its activity.
In most genes, the transcription site is a single base present upstream of the coding sequence. Though RNAP is a catalytically efficient enzyme, it does not recognize...
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Probing RNA Structure with Dimethyl Sulfate Mutational Profiling with Sequencing In Vitro and in Cells
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スナップショット:RNA構造探査技術

Paul D Carlson1, Molly E Evans2, Angela M Yu3

  • 1Robert F. Smith School of Chemical and Biomolecular Engineering, Cornell University, Ithaca NY; Center for Synthetic Biology, Northwestern University, Evanston IL.

Cell
|October 6, 2018
PubMed
まとめ
この要約は機械生成です。

高通量配列化と組み合わせた化学探査は,RNAの構造と機能を研究するための汎用的な方法である. このアプローチは,様々な生物学的文脈でRNA分子についての詳細な洞察を明らかにするために,多様な化学的探査を使用します.

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RNA Secondary Structure Prediction Using High-throughput SHAPE
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Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging
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Last Updated: Feb 4, 2026

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RNA Secondary Structure Prediction Using High-throughput SHAPE
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Probing The Structure And Dynamics Of Nucleosomes Using Atomic Force Microscopy Imaging
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科学分野:

  • 分子生物学
  • 生物化学
  • 遺伝学

背景:

  • RNAの構造を理解することは,その多様な細胞機能の解明に不可欠です.
  • 化学探査はRNAの二次,三次構造をマッピングするための強力な技術です.
  • 化学探査データの大規模分析を可能にする.

研究 の 目的:

  • RNA構造分析のための高通量配列化と組み合わせた化学探査の有用性を強調する.
  • 様々な生物学的環境におけるRNAの研究におけるこのアプローチの柔軟性を示します.
  • RNA構造と相互作用を調査するための化学探査機の広範な適用性を強調する.

主な方法:

  • 異なるRNA特性を標的にする 多様な化学探査機を使用します
  • 探査データを分析するために高通量シーケンシング技術を適用する.
  • 生体内および体内RNA構造の決定のための配列化と化学探査を統合する.

主要な成果:

  • RNA構造の解明のための化学探査と配列の柔軟性を実証した.
  • 細胞環境と非細胞環境の両方でRNA構造を調査する能力を示した.
  • RNAの構造的特徴と分子相互作用に関する包括的な洞察を強調した.

結論:

  • 高通量配列化と組み合わせた化学探査は,RNA構造の研究のための堅牢で適応可能なプラットフォームを提供します.
  • さまざまな化学探査機が利用可能になったことで,構造調査の範囲が拡大した.
  • この統合的アプローチは,細胞プロセスにおけるRNAの役割を理解するために不可欠です.