- EMDB-9952: Structure of the native supercoiled hook as a universal joint -
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Basic information
Entry
Database: EMDB / ID: EMD-9952
Title
Structure of the native supercoiled hook as a universal joint
Map data
Sample
Complex: Native supercoiled hook
Protein or peptide: Flagellar hook protein FlgE
Keywords
Flagella motor / Hook / Native structure / Supercoiled / FlgE / MOTOR PROTEIN
Function / homology
Function and homology information
bacterial-type flagellum basal body / bacterial-type flagellum-dependent swarming motility Similarity search - Function
Flagellar hook protein FlgE superfamily / Flagellar hook protein FlgE / Flagellar basal body protein FlaE D2 domain / Flagellar basal body rod protein, conserved site / Flagellar hook-basal body protein, FlgE/F/G / Flagellar hook-basal body protein, FlgE/F/G-like / Flagella basal body rod proteins signature. / Flagellar basal body rod protein, N-terminal / Flagella basal body rod protein / Flagellar basal-body/hook protein, C-terminal domain / Flagellar basal body rod FlgEFG protein C-terminal Similarity search - Domain/homology
Japan Agency for Medical Research and Development (AMED)
JP19am0101117
Japan
Japan Agency for Medical Research and Development (AMED)
JP17pc0101020
Japan
Citation
Journal: Nat Commun / Year: 2019 Title: Structure of the native supercoiled flagellar hook as a universal joint. Authors: Takayuki Kato / Fumiaki Makino / Tomoko Miyata / Péter Horváth / Keiichi Namba / Abstract: The Bacterial flagellar hook is a short supercoiled tubular structure made from a helical assembly of the hook protein FlgE. The hook acts as a universal joint that connects the flagellar basal body ...The Bacterial flagellar hook is a short supercoiled tubular structure made from a helical assembly of the hook protein FlgE. The hook acts as a universal joint that connects the flagellar basal body and filament, and smoothly transmits torque generated by the rotary motor to the helical filament propeller. In peritrichously flagellated bacteria, the hook allows the filaments to form a bundle behind the cell for swimming, and for the bundle to fall apart for tumbling. Here we report a native supercoiled hook structure at 3.6 Å resolution by cryoEM single particle image analysis of the polyhook. The atomic model built into the three-dimensional (3D) density map reveals the changes in subunit conformation and intersubunit interactions that occur upon compression and extension of the 11 protofilaments during their smoke ring-like rotation. These observations reveal how the hook functions as a dynamic molecular universal joint with high bending flexibility and twisting rigidity.
History
Deposition
Jun 17, 2019
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Header (metadata) release
Feb 12, 2020
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Map release
Feb 12, 2020
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Update
Mar 27, 2024
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Current status
Mar 27, 2024
Processing site: PDBj / Status: Released
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Structure visualization
Movie
Surface view with section colored by density value
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