化学選択ヒスティジンの生物結合のためのバイオインスピレーションのチオホスフォロジクロリデート反応剤
Shang Jia1, Dan He1, Christopher J Chang1,2,3
1Department of Chemistry , University of California , Berkeley , California 94720 , United States.
Journal of the American Chemical Society
|April 25, 2019
まとめ
研究者らは,タンパク質のヒスティジン残基を修正する新しい方法を開発し,標的型機能化を可能にしました. このヒスティジンの改変戦略は,特定の荷重分子を結合することによって,細胞へのタンパク質の供給を強化します.
科学分野:
- 生物化学
- 化学生物学
- タンパク質工学
背景:
- 部位選択的生物結合はタンパク質の機能化に不可欠である.
- システインとライシン残基は,核愛性があるため,伝統的に標的にされています.
- ヒスティジンなどの他のアミノ酸残基の選択的改変が必要である.
研究 の 目的:
- タンパク質におけるヒスティジン残留物のサイト選択的改変のための新しい戦略を開発する.
- ヒスティジン誘導化学を用いて 温和な条件下でタンパク質の機能化を可能にします
- タンパク質工学と細胞応用のためのヒスティジン改変の有用性を探求する.
主な方法:
- ヒスティジンのリン酸化を模倣するチオホスフォロジクロリデート反応剤を使用した.
- 配合した銅によるアルキネアジドサイクル添加 (CuAAC) を使った.
- ヒスティジン残留物の選択的改変が示されている. ヒス・タグを含む.
主要な成果:
- 温和な条件下でタンパク質ヒスティジンの迅速かつ選択的なラベル付けを達成した.
- CuAAC化学を介して様々なペイロードを導入しました.
- タンパク質の浄化と機能化のためのHis-タグの有効な共性改変を示した.
- ポリアルギニンの付着によって タンパク質の細胞吸収が強化されたことが示されています
結論:
- 新しいチオホスフォロジクロリデート反応剤を用いた多用途ヒスティジン改変戦略を開発した.
- この方法は,サイト固有のタンパク質機能化とペイロード配信を可能にします.
- ヒスティジン誘導化学は,特に細胞の用途において,タンパク質の機能の探査と強化のための新しい道を提供します.
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