第 VI 型分泌 システム 基質 は 姉妹 細胞 の 間 に 移転 し,再利用 さ れる
Andrea Vettiger1, Marek Basler1
1Focal Area Infection Biology, Biozentrum, University of Basel, Basel, Switzerland.
Cell
|September 13, 2016
まとめ
バクテリア型IV分泌システム (T6SS) ナノマシン
科学分野:
- 微生物学
- 分子生物学
- バクテリア病原性
背景:
- バクテリアのタイプVI分泌システム (T6SS) は複雑なナノマシンである.
- 標的細胞にエフェクタタンパク質を注入します 標的細胞にエフェクタタンパク質を注入します
研究 の 目的:
- T6SSの先端とHcpタンパク質が,シート組立と機能に果たす役割を調査する.
- バクテリア細胞間のT6SS成分交換のダイナミクスを探求する.
- T6SSが細菌間相互作用と協力をどのように媒介するかを理解する.
主な方法:
- 顕微鏡検査と遺伝子操作で T6SSの構成と機能を研究する
- チップとHcpの交換を分析するタンパク質相互作用測定法.
- 細菌間補完と競争を評価するための共培養実験
主要な成果:
- 端の組成と量はT6SSシートアセンブリと長さを調節する.
- Hcp (ヘモリシン共調タンパク質) の存在は,シート長さに影響する.
- T6SSは,接触する細胞間の尖端とHcpタンパク質の迅速な交換を容易にする.
- 転位したタンパク質は再利用され,細胞分泌と株間協力の可能性を示唆する.
結論:
- TipとHcpはT6SSの組み立てと機能に不可欠なダイナミックなコンポーネントです.
- T6SSの細菌間交換は,機能的な補完と協力を可能にします.
- T6SS媒介のタンパク質転送は,細菌の生存と競争能力を高めることができます.
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