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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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RNA Stability01:53

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Nucleic Acid Structure01:25

Nucleic Acid Structure

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The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms  a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
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Pre-mRNA Processing: Modification of pre-mRNA Ends01:35

Pre-mRNA Processing: Modification of pre-mRNA Ends

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In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a cap to the 5' end of the growing transcript. In this process, a 5' phosphate is replaced by modified guanosine that has a methyl group attached (7-methyl guanosine). This 5' cap helps...
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pre-mRNA Processing02:01

pre-mRNA Processing

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In eukaryotic cells, transcripts made by RNA polymerase are modified and processed before exiting the nucleus. Unprocessed RNA is called precursor mRNA or pre-mRNA to distinguish it from mature mRNA.
Once about 20-40 ribonucleotides have been joined together by RNA polymerase, a group of enzymes adds a “cap” to the 5’ end of the growing transcript. In this process, a 5’ phosphate is replaced by modified guanosine that has a methyl group attached to it (7-Methyl...
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Highly Efficient Transfection of Primary Macrophages with In Vitro Transcribed mRNA
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メッセンジャーRNAの改変:形態,分布,機能

Wendy V Gilbert1, Tristan A Bell2, Cassandra Schaening3

  • 1Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA. wgilbert@mit.edu.

Science (New York, N.Y.)
|June 18, 2016
PubMed
まとめ
この要約は機械生成です。

エピトランスクリプトームは,N(6) -メチラデノシン (m(6) AのようなmRNAの改変を含むが,RNAの機能に不可欠である. 研究によって これらの動的マークの理解や 細胞のプロセスにおける 規則性や役割が 急速に進歩しています

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An In Vitro Assay to Detect tRNA-Isopentenyl Transferase Activity
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A Method for Measuring RNA N6-methyladenosine Modifications in Cells and Tissues
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関連する実験動画

Last Updated: Mar 19, 2026

Highly Efficient Transfection of Primary Macrophages with In Vitro Transcribed mRNA
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Highly Efficient Transfection of Primary Macrophages with In Vitro Transcribed mRNA

Published on: November 9, 2019

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An In Vitro Assay to Detect tRNA-Isopentenyl Transferase Activity
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A Method for Measuring RNA N6-methyladenosine Modifications in Cells and Tissues
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科学分野:

  • 分子生物学
  • エピジェネティクス
  • RNA 生物学

背景:

  • 安定した非コーディングRNAには100以上のRNA変異がある.
  • 最近の進歩は,メッセンジャーRNA (mRNA) の広範な改変を明らかにしています.
  • 重要なmRNAの改変には,N(6) -メチラデノシン (m(6) A,5メチルサイトシン (m(5) C,および偽ウリジン (Ψ) が含まれる.

研究 の 目的:

  • mRNA 変異の位置,調節,機能に関する理解の進化について議論する.
  • 種と変異の違いを強調する
  • エピトランスクリプトームにおける将来の研究方向性を特定する.

主な方法:

  • エピトランスクリプトームの研究における最近の技術的進歩のレビュー
  • mRNA改変に関する現在の文献の分析.
  • 異なる改変と種の比較分析

主要な成果:

  • ダイナミックなmRNAマークを含むエピトランスクリプトームは,急速に発展している分野です.
  • m ((6) Aの改変は,多様で新興の分子的な結果をもたらします.
  • m ((5) C と Ψ の修正の機能的および規制的役割は,ほとんど研究されていない.

結論:

  • mRNAの改変パターンを理解することは 遺伝子調節を解読する鍵です
  • mRNAの改変の分子効果を生物のフェノタイプと関連付けるには,さらなる研究が必要である.
  • mRNAの改変は細胞および発達過程の重要な調節因子である.