タンパク質機能の連続的な活性化と無活性化には,スペクトル分化ケージ化フォスフォアミノ酸を用いる
Brenda N Goguen1, Andreas Aemissegger, Barbara Imperiali
1Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA.
Journal of the American Chemical Society
|June 23, 2011
まとめ
研究者らは,異なる光の波長を使用した2つの異なるフォトケージされたフォスホペプチドを連続的に放出する新しい方法を開発しました. この技術は,単一の実験で複数のリン酸化イベントの研究を可能にし,生物学的プロセスの調査を進めます.
科学分野:
- バイオケミストリー バイオケミストリー
- 化学生物学 化学生物学とは
- 分子生物学は分子生物学である.
背景:
- 1-(2-ニトロフェニル) エチル (NPE) などの光衰性ケージンググループは,タンパク質のリン酸化のような生物学的プロセスを研究するために使用されます.
- 以前の研究は,実験ごとに1つのフォスフォペプチドのみをケージから取り出すことに限定されていました.
研究 の 目的:
- 単一のシステムで2つの異なるフォスホペプチドを連続的に開封する方法を開発する.
- 複数のリン酸化イベントを同時に尋問することを可能にします.
主な方法:
- [7-(ダイエチラミノ) キュマリン-4-イル]メチル (DEACM) -ケージ化されたリン酸化セリン,スレオニン,チロシンの構成要素の合成.
- これらの構成要素をFmocベースの固相ペプチド合成を用いてペプチドに組み込む.
- 2つの異なる光の波長を使用した連続的な開封:DEACMは420nm,NPEは365nm.
主要な成果:
- 420nmの光でDEACMケージのフォスホペプチドの選択的な放出は,NPEケージのペプチドに影響を及ぼさずに行われます.
- 365nmの光でNPEに閉じ込められたフォスフォペプチドの後の放出.
- Wip1フォスファタゼの活性制御による連続的な脱籠アプローチの実証.
結論:
- 複数のリン酸化イベントを研究するための汎用的な連続的な開封アプローチが確立されています.
- この方法は,光を用いた生物学的過程の正確な時間的な制御を可能にします.
- 開発されたビルディングブロックは,フォトケージされたリン酸化物の残基をペプチドやタンパク質に組み込むことを容易にする.
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