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関連する概念動画

Ribosomes01:27

Ribosomes

Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome production. Within...
Ribosomes01:27

Ribosomes

Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.Ribosome Structure and AssemblyRibosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome production. Within the...
Ribosomes01:27

Ribosomes

Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.
Ribosome Structure and Assembly
Ribosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome production. Within...
Ribosomes01:27

Ribosomes

Ribosomes translate genetic information encoded by messenger RNA (mRNA) into proteins. Both prokaryotic and eukaryotic cells have ribosomes. Cells that synthesize large quantities of protein—such as secretory cells in the human pancreas—can contain millions of ribosomes.Ribosome Structure and AssemblyRibosomes are composed of ribosomal RNA (rRNA) and proteins. In eukaryotes, rRNA is transcribed from genes in the nucleolus—a part of the nucleus that specializes in ribosome production. Within the...
Ribosomal RNA Synthesis02:53

Ribosomal RNA Synthesis

Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosomal RNA Synthesis02:53

Ribosomal RNA Synthesis

Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...

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関連する実験動画

Updated: Jun 7, 2026

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis
08:07

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis

Published on: July 6, 2021

リボソームバイオゲネシスの視覚化:30Sサブユニットの並列組成経路

Anke M Mulder1, Craig Yoshioka, Andrea H Beck

  • 1Department of Cell Biology, The Scripps Research Institute, La Jolla, CA 92037, USA.

Science (New York, N.Y.)
|October 30, 2010
PubMed
まとめ
この要約は機械生成です。

研究者は,発見型単粒子プロファイリング (DSP) を使用して30Sリボソームサブユニットの複雑なアセンブリをマッピングしました. これは,リボソームの生体生成のための複数のステップのメカニズムを明らかにし,中間構造とその動態を詳細に説明しました.

さらに関連する動画

Peering at Brain Polysomes with Atomic Force Microscopy
08:49

Peering at Brain Polysomes with Atomic Force Microscopy

Published on: March 16, 2016

In Vitro Reassociation Assay to Measure the Formation of 80S Ribosomal Particles Using Salt-washed Ribosomal Subunits
06:09

In Vitro Reassociation Assay to Measure the Formation of 80S Ribosomal Particles Using Salt-washed Ribosomal Subunits

Published on: December 16, 2025

関連する実験動画

Last Updated: Jun 7, 2026

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis
08:07

Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis

Published on: July 6, 2021

Peering at Brain Polysomes with Atomic Force Microscopy
08:49

Peering at Brain Polysomes with Atomic Force Microscopy

Published on: March 16, 2016

In Vitro Reassociation Assay to Measure the Formation of 80S Ribosomal Particles Using Salt-washed Ribosomal Subunits
06:09

In Vitro Reassociation Assay to Measure the Formation of 80S Ribosomal Particles Using Salt-washed Ribosomal Subunits

Published on: December 16, 2025

科学分野:

  • 分子生物学は分子生物学である.
  • 細胞生理学 細胞生理学
  • 構造生物学 構造生物学とは

背景:

  • リボソームは,DNA翻訳によるタンパク質合成を担う重要なマクロ分子機構である.
  • リボソームの生体生成を理解することは,細胞生理学にとって極めて重要ですが,組み立て経路は機械的に不明確です.
  • 以前の研究では,Escherichia coli 30Sサブユニットの並列組成経路が示唆されたが,詳細なメカニズムに関する洞察は得られなかった.

研究 の 目的:

  • Escherichia coli.における30Sリボソームサブユニットアセンブリのメカニズムを解明する.
  • 組み立ての中間材料とその集団動態を特定し,構造的に特徴づけること.
  • リボソームのバイオゲネシスの包括的なモデルを構築し,運動データと構造データを組み込む.

主な方法:

  • 単粒子プロファイリング (DSP),時間解像度の高い電子顕微鏡技術を使用した.
  • 30Sサブユニットの組み立てのスナップショットを100万枚以上取得しました.
  • 多面的なメカニズム分析のための質量スペクトロメトリーと統合されたDSPデータ.

主要な成果:

  • 14種類の異なる組み立ての中間材料の構造を特定し,視覚化しました.
  • これらの中間物質の集団の流れと動態を時間とともに監視した.
  • 結合依存関係と速度定数を含む最初の詳細なリボソーム組立機構を開発した.

結論:

  • この研究は,30S リボソームサブユニットアセンブリのための包括的なメカニズムモデルを提供します.
  • DSPは,複雑なマクロ分子組立プロセスを解剖するための強力なツールです.
  • この発見は,リボソームの生体生成と細胞機能の理解を深める.