イミノキシルラジカルによるチロシンのタンパク質改変
Katsuya Maruyama1, Takashi Ishiyama1, Yohei Seki1
1Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Journal of the American Chemical Society
|November 17, 2021
まとめ
研究者は,チロシン残留を標的とした合成タンパク質改変 (SPM) の新しい方法を開発しました. この技術により タンパク質の機能を逆行的に制御でき 生物学的研究と治療の新たな可能性が生まれます
科学分野:
- 化学生物学
- 生物化学
- 合成化学
背景:
- 翻訳後の修正 (PTM) は,タンパク質の機能を調節するために不可欠です.
- 合成タンパク質改変 (SPM) はPTMを模倣できるが,水害性残基に対する可逆性SPMは限られている.
- タイロシン (Tyr) の残留は,可逆性SPMの発生に問題をもたらします.
研究 の 目的:
- タイロシン選択性合成タンパク質改変 (SPM) 戦略を開発する.
- SPMを用いてタンパク質の機能を逆戻りさせる.
- 生物学的研究と治療における応用を探求する.
主な方法:
- ステリカルに阻害されたオキシムから生成された持続性イミノキシルラジカルを使用した.
- ティロシン残留物によるイミノキシル基の反応性と可逆性を研究した.
- 温和な条件下での特定のオキシメット (1fは安定し,1oは可逆的変化) を使った.
主要な成果:
- イミノキシルラジカルを使った ティロシン選択型SPMを開発した
- オキシム1oを用いた可逆的な改変が実証され,タンパク質の機能をオンデマンドで制御することができる.
- リバーシブルなTyr改変により,酵素活性と抗体対抗原結合親和性が成功しました.
結論:
- タイロシン選択的共性改変戦略を確立した.
- このSPMアプローチは,タンパク質機能のオン/オフスイッチをオンデマンドで提供します.
- 生物学的研究と治療開発を進める大きな可能性を秘めています
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