関連する実験動画
Updated: Jun 15, 2026

13:10
Use of Alu Element Containing Minigenes to Analyze Circular RNAs
Published on: March 10, 2020
Ad2 mRNAの処理のステップ:ポリ (A) +核配列が保存され,ポリ (A) 添加がスプライシングに先行する
Cell
|December 1, 1978
まとめ
アデノウイルス2 (Ad2) の核RNA配列は,細胞質への輸送中に保存されます. ポリアデニル化核RNAは高い保全性を示し,メッセンジャーRNA (mRNA) 分子の特定の処理と選択を示唆しています.
科学分野:
- 分子生物学は分子生物学である.
- ウイルス学 ウイルス学 ウイルス学
- 遺伝子発現の表現について
背景:
- アデノウイルス2 (Ad2) メジャー・ラット・トランスクリプション・ユニットは,複数のメッセンジャーRNA (mRNA) を生成する.
- 核細胞プラズマ輸送中の核RNAの保存を理解することは,遺伝子発現の研究にとって極めて重要です.
研究 の 目的:
- 核細胞プラズマ輸送中の核Ad2配列の保存を推定する.
- Ad2 mRNAsの処理および選択メカニズムを調査する.
主な方法:
- 3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジンの3H-ウリジの3H-ウリジの3H-ウリジ
- 異なるゲノム領域におけるRNA配列保存の分析.
- Ad2トランスクリプトにおけるポリアデニレーションとスプライシングの評価.
主要な成果:
- 特定のゲノム領域から合成された合計Ad2核RNAの10~28%が保存されます.
- ポリ (A) + Ad2核RNAは,約100%の配列保存を示しています.
- データは,各転写イベントが1つのmRNA分子を産生し,保存された部分は,ポリ (A) 添加部位の近くに位置することを示唆しています.
- ポリ (poly) 添加はスプライシングに先行し,mRNAの選択は3'端の選択に依存する.
結論:
- Ad2核RNAは,ポリアデニル配列の選択的な保存により,重要な処理を受けます.
- この発見は,ポリ・ア・添加とその後のスプライシングが最終的なmRNA製品を決定するモデルを支持する.
- このメカニズムは,単一の転写ユニットから機能的なmRNAの効率的な生成を保証します.
関連する概念動画
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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 guanosine). This 5’ cap helps the...
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 guanosine). This 5’ cap helps the...
Pre-mRNA Processing
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 guanosine). This 5’ cap helps the...
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 guanosine). This 5’ cap helps the...
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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
RNA Splicing
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
Pre-mRNA Processing: Modification of pre-mRNA Ends
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 the cell...
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 the cell...
RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...

