生物模倣プロトセルにおけるG-クアドルプレックス誘導液相分離
Xuejiao Liu1, Yansong Xiong2, Chunjuan Zhang1
1Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Biology, College of Chemistry and Chemical Engineering, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China.
Journal of the American Chemical Society
|July 16, 2021
まとめ
G四重複構造を持つ単一鎖DNAは,原細胞内のタンパク質で生物分子凝縮物形成を誘導する. このG-クアドルプレックスによる相分離は 細胞の組織に関する洞察を与えてくれます
科学分野:
- 分子生物学
- バイオ物理学
- 細胞生物学
背景:
- 生物分子凝縮物は ユカリオット細胞の組織化に不可欠です
- 段階分離における核酸構造の役割は不明である.
研究 の 目的:
- 生物分子相分離における単鎖DNA (ssDNA) の二次構造の役割を調査する.
- プロトセルモデル内の凝縮物の形成を調査する.
主な方法:
- プロトセルモデルとして巨大膜小胞 (GMV) を利用した.
- G-クアドルプレックス構造のssDNAとG-クアドルプレックス結合タンパク質の相互作用を調査した.
主要な成果:
- 並列のG四重複構造を持つssDNAは,タンパク質と機能的に協力して,GMV内の斑点状の点を形成した.
- 凝縮物形成はG四重複構造の多様性に依存した.
- 生物分子凝縮物の動的調節経路を示唆する可逆のクラスタリングを観察した.
結論:
- G-クアドルプレックス結合タンパク質とG-クアドルプレックス媒介生物分子相分離との関連が確認された.
- 発見は,生物学的プロセスにおける核酸調節相分離に関する洞察を提供します.
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