- PDB-5oiu: Crystal structure of PilF type IV pilus assembly ATPase from Ther... -
+
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: 5oiu
タイトル
Crystal structure of PilF type IV pilus assembly ATPase from Thermus thermophilus
要素
Type IV pilus assembly protein PilF
キーワード
MOTOR PROTEIN / ATPase / AAA+ / type IV pilus / DNA binding protein / ATP
機能・相同性
機能・相同性情報
ATP binding / metal ion binding / cytoplasm 類似検索 - 分子機能
Type II secretion system protein GspE, N-terminal / MshEN domain / Beta-Lactamase - #90 / Type II secretion system protein GspE, N-terminal superfamily / Bacterial type II secretion system protein E signature. / Type II/IV secretion system protein / Type II/IV secretion system protein / Beta-Lactamase / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold ...Type II secretion system protein GspE, N-terminal / MshEN domain / Beta-Lactamase - #90 / Type II secretion system protein GspE, N-terminal superfamily / Bacterial type II secretion system protein E signature. / Type II/IV secretion system protein / Type II/IV secretion system protein / Beta-Lactamase / P-loop containing nucleotide triphosphate hydrolases / Rossmann fold / P-loop containing nucleoside triphosphate hydrolase / 2-Layer Sandwich / 3-Layer(aba) Sandwich / Alpha Beta 類似検索 - ドメイン・相同性
ADENOSINE-5'-TRIPHOSPHATE / Type IV pilus assembly ATPase PilB 類似検索 - 構成要素
ジャーナル: Sci Rep / 年: 2018 タイトル: Structural cycle of the Thermus thermophilus PilF ATPase: the powering of type IVa pilus assembly. 著者: Richard Collins / Vijaykumar Karuppiah / C Alistair Siebert / Rana Dajani / Angela Thistlethwaite / Jeremy P Derrick / 要旨: Type IV pili are responsible for a diverse range of functions, including twitching motility and cell adhesion. Assembly of the pilus fiber is driven by a cytoplasmic ATPase: it interacts with an ...Type IV pili are responsible for a diverse range of functions, including twitching motility and cell adhesion. Assembly of the pilus fiber is driven by a cytoplasmic ATPase: it interacts with an inner membrane complex of biogenesis proteins which, in turn, bind to nascent pilin subunits and mediate fiber assembly. Here we report the structural characterization of the PilF TFP assembly ATPase from Thermus thermophilus. The crystal structure of a recombinant C-terminal fragment of PilF revealed bound, unhydrolysed ATP, although the full length complex was enzymatically active. 3D reconstructions were carried out by single particle cryoelectron microscopy for full length apoprotein PilF and in complex with AMPPNP. The structure forms an hourglass-like shape, with the ATPase domains in one half and the N1 domains in the second half which, we propose, interact with the other pilus biogenesis components. Molecular models for both forms were generated: binding of AMPPNP causes an upward shift of the N1 domains towards the ATPase domains of ~8 Å. We advocate a model in which ATP hydrolysis is linked to displacement of the N1 domains which is associated with lifting pilin subunits out of the inner membrane, and provide the activation energy needed to form the pilus fiber.
A: Type IV pilus assembly protein PilF B: Type IV pilus assembly protein PilF C: Type IV pilus assembly protein PilF D: Type IV pilus assembly protein PilF E: Type IV pilus assembly protein PilF F: Type IV pilus assembly protein PilF ヘテロ分子