関連する実験動画
Updated: May 17, 2026

08:07
Single Molecule Fluorescence Energy Transfer Study of Ribosome Protein Synthesis
Published on: July 6, 2021
リボソームタンパク質の核インポートをリボソームアセンブリと同期する
Dieter Kressler1, Gert Bange, Yutaka Ogawa
1Biochemie-Zentrum der Universität Heidelberg, Im Neuenheimer Feld 328, Heidelberg D-69120, Germany. dieter.kressler@unifr.ch
まとめ
シンポートン1 (Syo1) は,リボソームタンパク質Rpl5とRpl11の核への調整されたインポートを促進します. このトランスポートアダプタは,リボソーム生物生成のための5SリボソームRNA (rRNA) との同期した組み立てを保証します.
科学分野:
- 分子生物学は分子生物学である.
- 細胞生物学 細胞生物学
- バイオケミストリー バイオケミストリー
背景:
- リボソームタンパク質はサイトプラズマで合成され,リボソーム組立のために核に輸入されなければならない.
- 核細胞プラズマ輸送とリボソーム組成の間の調整は,まだ十分に理解されていません.
- リボソームタンパク質の特定の輸入経路は,細胞機能を維持するために不可欠です.
研究 の 目的:
- 核サイトプラズマ輸送とリボソーム組立を調整する要因を特定する.
- 5SリボソームRNA結合タンパク質の同期共インポートのメカニズムを解明する.
- リボソームのバイオゲネシスにおけるトランスポートアダプターの役割を理解する.
主な方法:
- タンパク質とタンパク質の相互作用を研究するためのインビトロ結合測定法.
- 複雑な形成の構造的基礎を決定するX線結晶学.
- 輸入受容体とRanGTPを含む核サイトプラズマ輸送機構の分析.
- 核と細胞プラズマの間のタンパク質のシャトルングの調査.
主要な成果:
- シンポートン1 (Syo1) は,Rpl5とRpl11.1の共同輸入を促進するトランスポートアダプタとして特定されました.
- Syo1はRpl5-Rpl11と輸入受容体Kap104.4の両方に結合する.
- Syo1-Rpl5-Rpl11複合体はRanGTPによって放出され,5S rRNA.を直接結合する.
- Syo1は,フェニララニン・グリシン・ヌクレオポリンとの相互作用によって,細胞質に戻ります.
- X線結晶学により,Syo1がRpl5アミノ端末をどのように取り入れているかが明らかになりました.
結論:
- シンポートチン1 (Syo1) は,Rpl5とRpl11の同期共インポートにおいて重要な役割を果たします.
- このメカニズムは,これらのタンパク質が60S前リボソームに調整され,ステキオメトリックに組み込まれることを保証します.
- Syo1媒介による輸送は,効率的なリボソーム生体生成と核インポートに不可欠です.
関連する概念動画
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,...
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 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,...
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,...
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...
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...
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...
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...
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...
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...
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...
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...

