非対称な金属触媒によるH原子移転のためのヘモプロテインの再利用
Xiang Zhang1,2, Dongping Chen1,2, María Álvarez1
1Department of Chemistry, University of Basel, Basel, Switzerland.
Nature
|July 31, 2025
まとめ
科学者はサイトクロムP450酵素を非対称な金属ヒドリド水素原子移転 (MHAT) 触媒に再利用した. 誘導進化は,アルケーンや他の基質から高エナチオ選択性を持つキラルサイクル化合物を合成するための新しい酵素を生み出しました.
科学分野:
- 生物触媒
- 有機化学
- 酵素工学
背景:
- 移行金属水素は,水素機能化反応において不可欠である.
- メタルヒドリド水素原子移転 (MHAT) は,活性化されていないアルケンの根本的な水素機能化を可能にします.
- 非対称的なMHATは,弱い触媒と根幹の相互作用のために困難です.
研究 の 目的:
- サイトクロームP450酵素 (CYPs) を非対称MHAT触媒に再利用する.
- 自然に非対称なMHAT反応を 開発する
- アシンメトリック・ラジカル・バイオカタリシスの範囲を拡大する.
主な方法:
- P450BM3の進化を誘導し,トリプルミュータントの触媒を作り出した.
- 細胞全体のエアロビック条件を利用して触媒化.
- 反応経路を解明するメカニズム的調査.
主要な成果:
- エンジニアリングされたP450BM3は98:2のエナティオメール比率で非活性化アルケンのMHAT基循環を触媒化した.
- ピロリジンとピペリジンを含む様々な循環化合物が合成された.
- 再利用されたP450BM3は,ヒドラゾーン,オキシーム,およびニトリルをエンアンチオ濃縮製品に成功裏に変換した.
- CYP119の指向的な進化により,ステレオ補完的なMHATaseが生じた.
結論:
- サイトクロームP450酵素は非対称性MHATに対して成功裏に再利用できます.
- 誘導進化は新しい生物触媒を 作り出すための強力なツールです
- この研究は,非対称的な根性生物触媒におけるメタロ酵素の可能性を拡大する.
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