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Types of RNA01:20

Types of RNA

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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 regulating 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 Performs Diverse...
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Types of RNA01:23

Types of RNA

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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.
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Nucleic Acids02:43

Nucleic Acids

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
DNA and RNA
The two main types of nucleic acids are deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). DNA is the genetic material in all living organisms, ranging from single-celled bacteria to multicellular mammals. It is in the nucleus of eukaryotes and in the organelles, chloroplasts, and mitochondria. In prokaryotes,...
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Nucleic acids02:43

Nucleic acids

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Nucleic acids are the most important macromolecules for the continuity of life. They carry the cell's genetic blueprint and carry instructions for its functioning.
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RNA Polymerase II Accessory Proteins02:36

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Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
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Isolation of Cognate RNA-protein Complexes from Cells Using Oligonucleotide-directed Elution
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同じ遺伝子内のタンパク質とRNAの機能の結合

Anthony Szempruch1, Mitchell Guttman1

  • 1Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, California 91125, USA.

Cell
|February 25, 2017
PubMed
まとめ
この要約は機械生成です。

紫外線はDNA損傷反応を誘発し 全球的に転写を減少させます 新しく特定されたタンパク質とその関連非コーディングRNAは,細胞がこの転写抑制状態から回復するのを助けます.

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関連する実験動画

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科学分野:

  • 分子生物学
  • 遺伝学
  • DNA 損傷に対する細胞の反応

背景:

  • 紫外線 (UV) 曝露は細胞に重大なストレスを引き起こす.
  • 紫外線曝露は細胞全体のDNA損傷反応 (DDR) を活性化します.
  • DDRの重要な特徴は 細胞転写の全般的な減少です

研究 の 目的:

  • 紫外線によるDNA損傷に対する 細胞の反応における 重要な分子要素を特定するためです
  • DDR中に転写を調節する特定のタンパク質と非コーディングRNAの役割を調査する.
  • 紫外線による転写抑制からの回復を促進するメカニズムを理解する.

主な方法:

  • 紫外線反応に関与するタンパク質を特定するために 分子生物学技術を活用した.
  • 非コーディングRNAの生成を特徴づけるためにRNAの配列と分析を行いました.
  • 細胞回復における特定されたタンパク質と非コーディングRNAの機能的役割を調査した.

主要な成果:

  • 紫外線へのDNA損傷反応に 重要な特定のタンパク質を特定した
  • 代替RNA処理によって生成された新しいノンコーディングRNAを発見した.
  • この非コーディングRNAは,UV誘発の転写抑制からの回復を促進することを実証した.

結論:

  • 特定のタンパク質と新しいノンコーディングRNAは,紫外線によるDNA損傷に対する細胞反応の重要な調節因子です.
  • 非コードRNAは紫外線曝露後の転写の回復を容易にする.
  • これらの発見は DNAの修復と回復の 細胞メカニズムに洞察を与えます