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関連する概念動画

Translational Regulation01:29

Translational Regulation

91
Translational regulation in prokaryotes ensures efficient protein synthesis by controlling ribosome access to mRNA. This regulation is mediated by secondary RNA structures, including translational riboswitches, RNA thermometers, and small RNAs (sRNAs), which respond to intracellular and environmental signals to modulate gene expression.Translational RiboswitchesRiboswitches in the leader region of mRNAs can regulate translation by altering the accessibility of the Shine-Dalgarno (SD) sequence,...
91
Types of RNA01:23

Types of RNA

64.7K
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
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Riboswitches01:56

Riboswitches

8.5K
Riboswitches are non-coding mRNA domains that regulate the transcription and translation of downstream genes without the help of proteins. Riboswitches bind directly to a metabolite and can form unique stem-loop or hairpin structures in response to the amount of the metabolite present. They have two distinct regions – a metabolite-binding aptamer and an expression platform.
The aptamer has high specificity for a particular metabolite which allows riboswitches to specifically regulate...
8.5K
Transcriptional Regulation: Riboswitches01:23

Transcriptional Regulation: Riboswitches

113
Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
113
RNA Stability01:53

RNA Stability

33.9K
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...
33.9K
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

994
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
994

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関連する実験動画

Updated: Sep 8, 2025

An Assay for Quantifying Protein-RNA Binding in Bacteria
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An Assay for Quantifying Protein-RNA Binding in Bacteria

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RNA結合タンパク質の再考:リボレギュレーションは,一般的な見解に異議を唱える

Matthias W Hentze1, Pia Sommerkamp1, Venkatraman Ravi1

  • 1European Molecular Biology Laboratory (EMBL), Heidelberg, Germany.

Cell
|September 5, 2025
PubMed
まとめ
この要約は機械生成です。

RNA結合タンパク質 (RBPs) の数は3倍になり,既知の遺伝子調節剤を超えて代謝酵素を含んでいます. これは,細胞生物学と医学におけるリボレギュレーションのより広範な役割を示唆しています.

キーワード:

さらに関連する動画

Novel RNA-Binding Proteins Isolation by the RaPID Methodology
11:19

Novel RNA-Binding Proteins Isolation by the RaPID Methodology

Published on: September 30, 2016

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Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
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Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins

Published on: August 9, 2019

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関連する実験動画

Last Updated: Sep 8, 2025

An Assay for Quantifying Protein-RNA Binding in Bacteria
07:02

An Assay for Quantifying Protein-RNA Binding in Bacteria

Published on: June 12, 2019

6.7K
Novel RNA-Binding Proteins Isolation by the RaPID Methodology
11:19

Novel RNA-Binding Proteins Isolation by the RaPID Methodology

Published on: September 30, 2016

9.1K
Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
11:34

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins

Published on: August 9, 2019

6.7K

科学分野:

  • 分子生物学
  • 遺伝学
  • 生物化学

背景:

  • RNA結合タンパク質 (RBPs) は伝統的に遺伝子発現を調節し,リボソームのような重要な細胞機構を形成します.
  • 既知のRBPレパートリーは最近大きく拡大し,以前のサイズを3倍以上にしました.
  • この拡張には,代謝酵素などのRNA結合の外部で確立された役割を持つタンパク質が含まれ,そのRNA結合の関連性に関する疑問を提起する.

研究 の 目的:

  • 拡張RBPomeの背後にある実験的証拠を調査するために.
  • 新しく特定されたRNA結合タンパク質の生物学的意義を疑問視する議論を評価する.
  • RBPsとRNAの相互作用の新興機能について議論する.

主な方法:

  • 拡張されたRBPomeを支持する実験データのレビュー.
  • RBPの機能に関する既存の文献と議論を批判的に分析する.
  • 新しいRBP-RNA相互作用に関する最近の発見の合成.

主要な成果:

  • この研究は,RBPomeの3倍化の根拠を検証しています.
  • タンパク質による広範なRNA結合の機能的関連性に対する課題を考慮している.
  • 最近のデータは,RBPとRNAの相互作用に関する新しい機能を明らかにしています.

結論:

  • RNAとタンパク質の相互作用は,現在理解されているよりも広範囲に及ぶ可能性が高い.
  • タンパク質機能のリボレギュレーションは,細胞生物学における新興的で重要な分野である.
  • この分野は 翻訳医学における進歩の可能性を秘めています