- EMDB-9391: Structure of the assembled ATPase EscN in complex with its centra... -
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基本情報
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データベース: EMDB / ID: EMD-9391
タイトル
Structure of the assembled ATPase EscN in complex with its central stalk EscO from the enteropathogenic E. coli (EPEC) type III secretion system
マップデータ
Assembled ATPase EscN in complex with its central stalk EscO from the enteropathogenic E. coli (EPEC) type III secretion system
試料
複合体: Homohexameric complex of ATPase EscN bound to one molecule of central stalk EscO
タンパク質・ペプチド: Translocator EscN
タンパク質・ペプチド: EscO
リガンド: ADENOSINE-5'-DIPHOSPHATE
リガンド: MAGNESIUM ION
リガンド: ALUMINUM FLUORIDE
リガンド: water
キーワード
ATPase / Type III Secretion System / ADP / hexamer / HYDROLASE
機能・相同性
機能・相同性情報
protein-secreting ATPase / type III protein secretion system complex / protein secretion by the type III secretion system / : / proton-transporting ATPase activity, rotational mechanism / proton-transporting ATP synthase activity, rotational mechanism / ATP hydrolysis activity / ATP binding / metal ion binding / cytoplasm 類似検索 - 分子機能
Type 3 secretion system ATPase SCTN / ATPase, type III secretion system, FliI/YscN / T3SS EscN ATPase, C-terminal / T3SS EscN ATPase C-terminal domain / : / ATPase, alpha/beta subunit, nucleotide-binding domain, active site / ATP synthase alpha and beta subunits signature. / ATPase, F1/V1/A1 complex, alpha/beta subunit, nucleotide-binding domain / ATP synthase alpha/beta family, nucleotide-binding domain / ATPases associated with a variety of cellular activities ...Type 3 secretion system ATPase SCTN / ATPase, type III secretion system, FliI/YscN / T3SS EscN ATPase, C-terminal / T3SS EscN ATPase C-terminal domain / : / ATPase, alpha/beta subunit, nucleotide-binding domain, active site / ATP synthase alpha and beta subunits signature. / ATPase, F1/V1/A1 complex, alpha/beta subunit, nucleotide-binding domain / ATP synthase alpha/beta family, nucleotide-binding domain / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Natural Sciences and Engineering Research Council (NSERC, Canada)
カナダ
Canadian Institutes of Health Research (CIHR)
カナダ
Howard Hughes Medical Institute (HHMI)
米国
引用
ジャーナル: Nat Commun / 年: 2019 タイトル: Cryo-EM structure of the homohexameric T3SS ATPase-central stalk complex reveals rotary ATPase-like asymmetry. 著者: Dorothy D Majewski / Liam J Worrall / Chuan Hong / Claire E Atkinson / Marija Vuckovic / Nobuhiko Watanabe / Zhiheng Yu / Natalie C J Strynadka / 要旨: Many Gram-negative bacteria, including causative agents of dysentery, plague, and typhoid fever, rely on a type III secretion system - a multi-membrane spanning syringe-like apparatus - for their ...Many Gram-negative bacteria, including causative agents of dysentery, plague, and typhoid fever, rely on a type III secretion system - a multi-membrane spanning syringe-like apparatus - for their pathogenicity. The cytosolic ATPase complex of this injectisome is proposed to play an important role in energizing secretion events and substrate recognition. We present the 3.3 Å resolution cryo-EM structure of the enteropathogenic Escherichia coli ATPase EscN in complex with its central stalk EscO. The structure shows an asymmetric pore with different functional states captured in its six catalytic sites, details directly supporting a rotary catalytic mechanism analogous to that of the heterohexameric F/V-ATPases despite its homohexameric nature. Situated at the C-terminal opening of the EscN pore is one molecule of EscO, with primary interaction mediated through an electrostatic interface. The EscN-EscO structure provides significant atomic insights into how the ATPase contributes to type III secretion, including torque generation and binding of chaperone/substrate complexes.
chain_id: A, residue_range: 26-97, source_name: PDB, initial_model_type: experimental model
詳細
phenix.real_space_refine
精密化
空間: REAL / プロトコル: FLEXIBLE FIT
得られたモデル
PDB-6njp: Structure of the assembled ATPase EscN in complex with its central stalk EscO from the enteropathogenic E. coli (EPEC) type III secretion system