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Use of Alu Element Containing Minigenes to Analyze Circular RNAs
Published on: March 10, 2020
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シュルーモールで発見された二次元SINEは,構造的には霊長類のAlu Aluに似ています
Sergey Kosushkin1,2, Nikita Vassetzky3, Olga Borodulina3
1Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 119991, Moscow, Russia. toki@mail.ru.
BMC biology
|February 19, 2026
まとめ
7SL RNAから派生した新しい二次元短い間隔元素 (SINE),Uropと名付けられた7SL RNAは,グラシール・シュルー・モールで発見されました. この発見は,SINEsの収束進化を明らかにし,ポリ (A) テイルダイナミクスのユニークな規制メカニズムを示唆しています.
科学分野:
- ゲノミクスゲノミクスとは
- 分子進化は分子進化である
- レトロトランスポーザンは
背景:
- 短い間隔元素 (SINEs) は,RNAポリメラーゼIIIによって転写されるレトロトランポゾンである.
- ほとんどのSINEはtRNAから発生するが,一部のSINEは特定の哺乳類の系統における7SLRNAから発生する.
- 7SLRNA由来SINEは,典型的には中央の削除を特徴とし,LINE1逆転写酵素によって動員されます.
研究 の 目的:
- モール (Talpidae) の SINE 進化を調査する.
- グラシール・シュルー・モール (Uropsilus gracilis) の新しいSINEファミリーを特徴付ける.
- 7SLRNA由来SINEsの進化的起源とダイナミクスを理解する.
主な方法:
- モール種のゲノムマイニング.
- SINEの配列と構造のバイオ情報分析.
- 系統遺伝学的分析から現在までのSINE起源.
- 尾の長さを比較した分析.
主要な成果:
- Uropsilus gracilisでは,tRNA由来SINEは見つかりませんでした.
- U. gracilisでは約28万個もの2次元の7SLRNA由来SINE,Uropと呼ばれるものが確認されたが,他のタルピッドでは確認されなかった.
- Uropは,特定の削除と重複を持つモノメリック前体と二重形を含む,霊長類 Alu 元素との構造的類似性を表しています.
- 最も若いUrop亜族 (Urop_c) は,人間のAlUY元素と比較して,長いポリ (A) 尾の過剰を示しています.
結論:
- ウロップは収束進化の顕著な例であり,独立してAluのような二次元SINEを形成しています.
- その起源は7SL RNA,構造的進化,tRNA由来SINEsの抑制から,並行して霊長類 Aluの進化に由来する.
- Urop_cの独特のポリー (A) 尾の特徴は,新しい規制メカニズムと潜在的に進行中の逆位活動を示唆しています.
- この発見は,SINEを生成する7SLRNAの進化的可塑性を強調し,SINEファミリーダイナミクスとポリ・テール・レギュレーションに関する疑問を提起しています.
キーワード:
ウロプシルス (Uropsilus) とは7SLRNAは7SLRNAであることから,アルー アルー アルー アルー アルーエウリポティフララ (Eulipotyphla) とはレトロポソンはレトロポソンがリトロトランスポーゼーションシネイン (SINE) とはSRP RNA RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRP RNAは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPは,SRPはタルピー科 (Talpidae) とは タルピー科 (Talpidae) とは タルピー科 (Talpidae) とは タルピー科 (Talpidae) とは転載可能な要素関連する概念動画
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