ペプチドおよびタンパク質におけるセレノシステインの化学選択的銅媒介的改変
Zhenguang Zhao1, Daphna Shimon1, Norman Metanis2
1Institute of Chemistry, The Hebrew University of Jerusalem, Edmond J. Safra, Givat Ram, Jerusalem 91904, Israel.
Journal of the American Chemical Society
|August 4, 2021
まとめ
ペプチドとタンパク質の化学選択的改変は,セレノシステイン残留物とアリル/アルキル基を用いて達成される. この迅速で水性な方法は,化学生物学における多様な応用のための生物結合を可能にします.
科学分野:
- 生物化学
- 化学生物学
- 有機化学
背景:
- ペプチドとタンパク質から貴重な生物結合分子を合成するには,効率的で化学選択的な化学変化が不可欠です.
- 既存の方法は,効率性,選択性,または反応条件の制限に直面する可能性があります.
研究 の 目的:
- ペプチドとタンパク質の改変のための新しい, 化学選択的方法を開発する.
- アリル/アルキルラジカルとの結合のためにセレノシステイン残留物を利用する.
主な方法:
- セレノシステイン残留とアリル/アルキル基の反応を用いる.
- 水素基板と銅イオンを使用して,原位でラジカルを生成する.
- 反応は水性バッファでほぼ中性pH (5−8) で実施する.
主要な成果:
- 線形および周期性ペプチドおよびタンパク質の急速なSe-改変が示されている.
- ペプチドとタンパク質をアリル分子,アルキル分子,バイオチン親和タグに結合させました.
- セレノシステイン残留物による化学選択的変異が達成された.
結論:
- この新しい化学反応は タンパク質の化学的変化に 新しい効率的な方法を提供します
- この方法は,様々なペプチドとタンパク質に対して,温和な水分条件下で適用できる.
- 様々な応用のための多様な生物結合分子の合成を容易にする.
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