- PDB-5wq7: CryoEM structure of type II secretion system secretin GspD in E.c... -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: PDB / ID: 5wq7
タイトル
CryoEM structure of type II secretion system secretin GspD in E.coli K12
要素
Putative type II secretion system protein D
キーワード
PROTEIN TRANSPORT / Secretin family / C15 symmetry / T2SS
機能・相同性
機能・相同性情報
protein secretion by the type II secretion system / type II protein secretion system complex / protein secretion / cell outer membrane / identical protein binding 類似検索 - 分子機能
Ribosomal Protein S8; Chain: A, domain 1 - #120 / Type II secretion system protein GspD / : / GspD-like, N0 domain / GspD/PilQ family / Bacterial type II secretion system protein D signature. / Type II secretion system protein GspD, conserved site / : / NolW-like / NolW-like superfamily ...Ribosomal Protein S8; Chain: A, domain 1 - #120 / Type II secretion system protein GspD / : / GspD-like, N0 domain / GspD/PilQ family / Bacterial type II secretion system protein D signature. / Type II secretion system protein GspD, conserved site / : / NolW-like / NolW-like superfamily / Bacterial type II/III secretion system short domain / Type II/III secretion system / Bacterial type II and III secretion system protein / Ribosomal Protein S8; Chain: A, domain 1 / 2-Layer Sandwich / Alpha Beta 類似検索 - ドメイン・相同性
ジャーナル: Nat Struct Mol Biol / 年: 2017 タイトル: Structural insights into the secretin translocation channel in the type II secretion system. 著者: Zhaofeng Yan / Meng Yin / Dandan Xu / Yongqun Zhu / Xueming Li / 要旨: The secretin GspD of the type II secretion system (T2SS) forms a channel across the outer membrane in Gram-negative bacteria to transport substrates from the periplasm to the extracellular milieu. ...The secretin GspD of the type II secretion system (T2SS) forms a channel across the outer membrane in Gram-negative bacteria to transport substrates from the periplasm to the extracellular milieu. The lack of an atomic-resolution structure of the GspD channel hinders the investigation of substrate translocation mechanism of T2SS. Here we report cryo-EM structures of two GspD channels (∼1 MDa), from Escherichia coli K12 and Vibrio cholerae, at ∼3 Å resolution. The structures reveal a pentadecameric channel architecture, wherein three rings of GspD N domains form the periplasmic channel. The secretin domain constitutes a novel double β-barrel channel, with at least 60 β-strands in each barrel, and is stabilized by S domains. The outer membrane channel is sealed by β-strand-enriched gates. On the basis of the partially open state captured, we proposed a detailed gate-opening mechanism. Our structures provide a structural basis for understanding the secretin superfamily and the mechanism of substrate translocation in T2SS.
履歴
登録
2016年11月23日
登録サイト: PDBJ / 処理サイト: PDBJ
改定 1.0
2016年12月28日
Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: EM metadata / Data content type: EM metadata / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Additional map / Data content type: Additional map / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2016年12月28日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
Data content type: EM metadata / Data content type: EM metadata / EM metadata / Group: Data processing / Experimental summary / Data content type: EM metadata / EM metadata / カテゴリ: em_admin / em_software / Data content type: EM metadata / EM metadata / Item: _em_admin.last_update / _em_software.name
A: Putative type II secretion system protein D B: Putative type II secretion system protein D C: Putative type II secretion system protein D D: Putative type II secretion system protein D E: Putative type II secretion system protein D F: Putative type II secretion system protein D G: Putative type II secretion system protein D H: Putative type II secretion system protein D I: Putative type II secretion system protein D J: Putative type II secretion system protein D K: Putative type II secretion system protein D L: Putative type II secretion system protein D M: Putative type II secretion system protein D N: Putative type II secretion system protein D O: Putative type II secretion system protein D