サルモネラウイルス性タンパク質の機能の多様化は,ユビキチン依存の微分局所化による
Jayesh C Patel1, Karsten Hueffer, Tukiet T Lam
1Section of Microbial Pathogenesis, Yale University School of Medicine, 295 Congress Avenue, New Haven, CT 06536, USA.
Cell
|April 22, 2009
まとめ
サルモネラ・タイフィムリウム型
科学分野:
- 微生物学 微生物学とは
- 細胞生物学 細胞生物学
- 分子生物学は分子生物学である.
背景:
- 細菌の病原体は,第3型分泌システム (T3SS) を使用して,受容体細胞にエフェクタータンパク質を注入します.
- これらのエフェクターは,宿主細胞の機能を操作して,感染や共生を促進します.
研究 の 目的:
- サルモネラ・タイフィムリウムエフェクターSopBが宿主細胞内の機能をどのように多様化するかを調査する.
- SopBの活動におけるタンパク質の局所化とユビキチネーションの役割を理解する.
主な方法:
- SopBの局所化と機能を研究するために分子生物学技術を活用しました.
- ホスト細胞のコンパートメントとユビキチネーションの状態とのSopBの相互作用を調査した.
主要な成果:
- フォスホイノシチド・フォスファタゼSopBは,プラズマ膜とファゴソームを含む異なる細胞部位に局在する.
- SopBの局所化は,ユビキチネーションによって調節され,異なる細胞プロセスを調節することができます.
- SopBの同じ酵素活性が,細菌の内部化,Aktの活性化,膀の輸送,細胞内複製に起因する.
結論:
- Salmonella Typhimuriumは,T3SSエフェクタであるSopBを用いて,宿主細胞機構を様々な機能に活用しています.
- ウビキチン依存の局所化は,SopBが複数の細胞部位で作用し,毒性を高めることを可能にします.
- この戦略は,宿主細胞の調節を最大限にするために,単一のエフェクタータンパク質の機能的レパートリーを拡大します.
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