遺伝子コードの拡張とサイクロディペプチド合成の進化による非自然なサイクロディペプチドの生物合成

Yu Hu¹, Linqi Cheng¹, Yijie Liu¹

¹Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States.

Journal of the American Chemical Society

|September 9, 2025

まとめ

遺伝子コードの拡張技術は今では非リボソームの自然製品を設計していますこの研究は,GCEとサイクロディペプチド合成を統合して,非正規のアミノ酸を含む新しいサイクロディペプチドを作成します.

科学分野:

生物化学
合成生物学
分子工学

背景:

遺伝子コード拡張 (GCE) は伝統的にタンパク質とペプチドを改変します.
GCEの非リボソームの天然製品への適用は,ほとんど研究されていない.
サイクロディペプチド合成酵素 (CDPS) は非リボソームペプチド合成における重要な酵素である.

研究の目的:

GCEとCDPSエンジニアリングを統合する新しい戦略を開発する.
非正規のアミノ酸 (ncAAs) を含む新しいサイクロディペプチドを作成する.
タンパク質工学を超えた GCE の可能性を探るため

主な方法:

サイクロディペプチド合成酵素 (CDPS) の方向転換
ncAAの組み込みのためのGCE技術の統合.
分子ダイナミクスシミュレーションと結合自由エネルギー計算

主要な成果:

エンジニアリングされたCDPS変種は,ncAAsで効率的に生体合成したサイクロディペプチドである.
4-アジド-l-フェニララニンが AlbC由来サイクロディペプチドに組み込まれる.
他のCDPSに対して,より広範な基板の適用範囲と適用性を実証した.

結論:

GCE技術は,非リボソームの天然製品を設計するために成功裏に適用できます.
このアプローチにより,多様な構造と機能を持つ新しいサイクロディペプチドが作られます.
タンパク質を超えた生物分子工学の新しい道を開きます

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