アプタマーとリボ酵素の機能のためのアロステリックスイッチとしての双面ペプチド核酸
Xin Xia1, Xijun Piao, Dennis Bong
1Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States.
Journal of the American Chemical Society
|May 7, 2014
まとめ
双面ペプチド核酸 (bPNA) トリプレックスは,DNA/RNAのデュプレックスを置き換え,失われた機能を復元することができます. bPNAは核酸機能を制御するアロステリックトリガーとして作用し,幅広い有用性を示しています.
科学分野:
- バイオケミストリー バイオケミストリー
- 分子生物学は分子生物学である.
- 合成生物学 合成生物学とは
背景:
- 非コーディング核酸は,細胞のプロセスにおいて重要な役割を果たします.
- 核酸の二重幹の破壊は,機能の喪失につながる可能性があります.
- ペプチド核酸 (PNA) は,ユニークな結合特性を持っています.
研究 の 目的:
- DNA/RNA二重複の機能的置換を二面性PNA (bPNA) ハイブリッドトリプレックスで調査する.
- 核酸機能を調節するためのアロステリックトリガーとしてbPNAの使用を調査する.
- bPNAを用いた非コーディング核酸における失われた機能の回復を実証する.
主な方法:
- 非コーディング核酸の二重幹を非構造化オリゴ-T/U鎖に置き換える.
- bPNAの結合部位を導入し,これらの鎖をbPNAのトリプルックスハイブリッド茎に再折りたたむ.
- DNA/RNAアプタマーとハンマーヘッドリボ酵素における機能的救済の評価.
主要な成果:
- bPNAハイブリッドトリプレックスは,二重複のDNA/RNAを成功裏に代替し,失われた構造機能を回復しました.
- bPNA結合アロステリック活性化タンパク質とアプタマーにおける小分子結合.
- リボ酵素モデルシステムにおける触媒活性およびRNAスプライシング機能の回復が達成されました.
結論:
- 二面性PNA (bPNA) ハイブリッドトリプレックスは,DNA/RNAのデュプレックスを機能的に置き換えることができます.
- bPNAは,核酸機能を調節する効果的なアロステリックトリガーとして機能します.
- bPNAは,コード化されていない核酸工学における多様なアプリケーションの有意な可能性を実証しています.
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