- EMDB-29383: Structure of baseplate with receptor binding complex of Agrobacte... -
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基本情報
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データベース: EMDB / ID: EMD-29383
タイトル
Structure of baseplate with receptor binding complex of Agrobacterium phage Milano
マップデータ
試料
ウイルス: Agrobacterium phage Milano (ファージ)
タンパク質・ペプチド: x 10種
リガンド: x 1種
キーワード
Myophage / redox trigger / disulfides / VIRUS
機能・相同性
機能・相同性情報
biological process involved in interaction with host / viral life cycle / virion component 類似検索 - 分子機能
DNA circulation, N-terminal / DNA circularisation protein N-terminus / Baseplate protein J-like / Baseplate J-like protein / Pectin lyase fold / Pectin lyase fold/virulence factor 類似検索 - ドメイン・相同性
DNA-circularization protein / Baseplate hub protein / Tail sheath protein / Virion-associated protein / Baseplate protein / Baseplate protein / Tail fiber protein / Virion-associated protein / Virion-associated protein 類似検索 - 構成要素
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM122510
米国
引用
ジャーナル: Nat Commun / 年: 2024 タイトル: An extensive disulfide bond network prevents tail contraction in Agrobacterium tumefaciens phage Milano. 著者: Ravi R Sonani / Lee K Palmer / Nathaniel C Esteves / Abigail A Horton / Amanda L Sebastian / Rebecca J Kelly / Fengbin Wang / Mark A B Kreutzberger / William K Russell / Petr G Leiman / ...著者: Ravi R Sonani / Lee K Palmer / Nathaniel C Esteves / Abigail A Horton / Amanda L Sebastian / Rebecca J Kelly / Fengbin Wang / Mark A B Kreutzberger / William K Russell / Petr G Leiman / Birgit E Scharf / Edward H Egelman / 要旨: A contractile sheath and rigid tube assembly is a widespread apparatus used by bacteriophages, tailocins, and the bacterial type VI secretion system to penetrate cell membranes. In this mechanism, ...A contractile sheath and rigid tube assembly is a widespread apparatus used by bacteriophages, tailocins, and the bacterial type VI secretion system to penetrate cell membranes. In this mechanism, contraction of an external sheath powers the motion of an inner tube through the membrane. The structure, energetics, and mechanism of the machinery imply rigidity and straightness. The contractile tail of Agrobacterium tumefaciens bacteriophage Milano is flexible and bent to varying degrees, which sets it apart from other contractile tail-like systems. Here, we report structures of the Milano tail including the sheath-tube complex, baseplate, and putative receptor-binding proteins. The flexible-to-rigid transformation of the Milano tail upon contraction can be explained by unique electrostatic properties of the tail tube and sheath. All components of the Milano tail, including sheath subunits, are crosslinked by disulfides, some of which must be reduced for contraction to occur. The putative receptor-binding complex of Milano contains a tailspike, a tail fiber, and at least two small proteins that form a garland around the distal ends of the tailspikes and tail fibers. Despite being flagellotropic, Milano lacks thread-like tail filaments that can wrap around the flagellum, and is thus likely to employ a different binding mechanism.