- EMDB-5721: Structure of the flexible N-terminal region of Yersinia enterocol... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-5721
タイトル
Structure of the flexible N-terminal region of Yersinia enterocolitica secretin YscC
マップデータ
Reconstruction of N-terminal region of YscC
試料
試料: YscC secretin from Yersinia enterocolitica
タンパク質・ペプチド: YscC secretin
キーワード
type III secretion system / Yersinia enterocolitica / Gram-negative bacteria / YscC / secretin / cryo-electron microscopy / outer membrane / N-terminal region
機能・相同性
機能・相同性情報
type III protein secretion system complex / type II protein secretion system complex / protein secretion by the type III secretion system / cell outer membrane / identical protein binding 類似検索 - 分子機能
: / SPI-1 type 3 secretion system secretin, N0 domain / Type III secretion system outer membrane pore YscC/HrcC / Bacterial type II secretion system protein D signature. / Type II secretion system protein GspD, conserved site / NolW-like / Bacterial type II/III secretion system short domain / NolW-like superfamily / Type II/III secretion system / Bacterial type II and III secretion system protein 類似検索 - ドメイン・相同性
ジャーナル: Structure / 年: 2013 タイトル: Structure of the dodecameric Yersinia enterocolitica secretin YscC and its trypsin-resistant core. 著者: Julia Kowal / Mohamed Chami / Philippe Ringler / Shirley A Müller / Mikhail Kudryashev / Daniel Castaño-Díez / Marlise Amstutz / Guy R Cornelis / Henning Stahlberg / Andreas Engel / 要旨: The type III secretion system machinery, also known as the injectisome, delivers bacterial effector proteins into eukaryotic cells during infection. The outer membrane YscC secretin is a major part ...The type III secretion system machinery, also known as the injectisome, delivers bacterial effector proteins into eukaryotic cells during infection. The outer membrane YscC secretin is a major part of Yersinia enterocolitica's injectisome and is among the first components to assemble, solely assisted by its pilotin, YscW. We have determined the three-dimensional structures of the native complex and its protease-resistant core to 12 Å resolution by cryo-electron microscopy (cryo-EM) and show that YscC forms a dodecameric complex. Cryo-EM of YscC reconstituted into proteoliposomes defines the secretin's membrane-spanning region. Native YscC consists of an outer membrane ring connected via a thin cylindrical wall to a conical, periplasmic region that exposes N-terminal petals connected by flexible linkers. These petals harbor the binding site of YscD, a component of the inner membrane ring. A change in their orientation adapts the length of the YscC secretin and facilitates its interaction with YscD.