+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-20312 | |||||||||
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タイトル | Salmonella SPI-1 injectisome needle complex with assembled needle | |||||||||
マップデータ | Salmonella SPI-1 injectisome needle complex with assembled needle | |||||||||
試料 |
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機能・相同性 | 機能・相同性情報 The IPAF inflammasome / type III protein secretion system complex / type II protein secretion system complex / protein secretion by the type III secretion system / protein secretion / protein targeting / cell outer membrane / protein transport / cell surface / extracellular region ...The IPAF inflammasome / type III protein secretion system complex / type II protein secretion system complex / protein secretion by the type III secretion system / protein secretion / protein targeting / cell outer membrane / protein transport / cell surface / extracellular region / identical protein binding / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344 (サルモネラ菌) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 5.15 Å | |||||||||
データ登録者 | Hu J / Worrall LJ / Vuckovic M / Hong C / Atkinson CE / Yu Z / Strynadka NCJ | |||||||||
資金援助 | カナダ, 1件
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引用 | ジャーナル: Nat Microbiol / 年: 2019 タイトル: T3S injectisome needle complex structures in four distinct states reveal the basis of membrane coupling and assembly. 著者: Jinhong Hu / Liam J Worrall / Marija Vuckovic / Chuan Hong / Wanyin Deng / Claire E Atkinson / B Brett Finlay / Zhiheng Yu / Natalie C J Strynadka / 要旨: The bacterial injectisome is a syringe-shaped macromolecular nanomachine utilized by many pathogenic Gram-negative bacteria, including the causative agents of plague, typhoid fever, whooping cough, ...The bacterial injectisome is a syringe-shaped macromolecular nanomachine utilized by many pathogenic Gram-negative bacteria, including the causative agents of plague, typhoid fever, whooping cough, sexually transmitted infections and major nosocomial infections. Bacterial proteins destined for self-assembly and host-cell targeting are translocated by the injectisome in a process known as type III secretion (T3S). The core structure is the ~4 MDa needle complex (NC), built on a foundation of three highly oligomerized ring-forming proteins that create a hollow scaffold spanning the bacterial inner membrane (IM) (24-mer ring-forming proteins PrgH and PrgK in the Salmonella enterica serovar Typhimurium Salmonella pathogenicity island 1 (SPI-1) type III secretion system (T3SS)) and outer membrane (OM) (15-mer InvG, a member of the broadly conserved secretin pore family). An internalized helical needle projects from the NC and bacterium, ultimately forming a continuous passage to the host, for delivery of virulence effectors. Here, we have captured snapshots of the entire prototypical SPI-1 NC in four distinct needle assembly states, including near-atomic resolution, and local reconstructions in the absence and presence of the needle. These structures reveal the precise localization and molecular interactions of the internalized SpaPQR 'export apparatus' complex, which is intimately encapsulated and stabilized within the IM rings in the manner of a nanodisc, and to which the PrgJ rod directly binds and functions as an initiator and anchor of needle polymerization. We also describe the molecular details of the extensive and continuous coupling interface between the OM secretin and IM rings, which is remarkably facilitated by a localized 16-mer stoichiometry in the periplasmic-most coupling domain of the otherwise 15-mer InvG oligomer. | |||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | EMマップ: SurfViewMolmilJmol/JSmol |
添付画像 |
-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_20312.map.gz | 5.9 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-20312-v30.xml emd-20312.xml | 9.7 KB 9.7 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_20312.png | 117.8 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-20312 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-20312 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_20312_validation.pdf.gz | 346.7 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_20312_full_validation.pdf.gz | 346.3 KB | 表示 | |
XML形式データ | emd_20312_validation.xml.gz | 6 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-20312 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-20312 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_20312.map.gz / 形式: CCP4 / 大きさ: 59.6 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Salmonella SPI-1 injectisome needle complex with assembled needle | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.71 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
-試料の構成要素
-全体 : Salmonella SPI-1 injectisome needle complex with assembled needle
全体 | 名称: Salmonella SPI-1 injectisome needle complex with assembled needle |
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要素 |
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-超分子 #1: Salmonella SPI-1 injectisome needle complex with assembled needle
超分子 | 名称: Salmonella SPI-1 injectisome needle complex with assembled needle タイプ: complex / ID: 1 / 親要素: 0 |
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由来(天然) | 生物種: Salmonella enterica subsp. enterica serovar Typhimurium str. SL1344 (サルモネラ菌) |
分子量 | 理論値: 4 MDa |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 8 |
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グリッド | 詳細: unspecified |
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN |
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撮影 | フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 平均電子線量: 51.3 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
-画像解析
最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 5.15 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 5018 |
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初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |