6K9Q

Structure of the native supercoiled hook as a universal joint


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.1 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure of the native supercoiled flagellar hook as a universal joint.

Kato, T.Makino, F.Miyata, T.Horvath, P.Namba, K.

(2019) Nat Commun 10: 5295-5295

  • DOI: 10.1038/s41467-019-13252-9

  • PubMed 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 and filament, and smoothly transmits torque generat ...

    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.


    Organizational Affiliation

    RIKEN Center for Biosystems Dynamics Research and SPring-8 Center, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan. keiichi@fbs.osaka-u.ac.jp.,Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan. keiichi@fbs.osaka-u.ac.jp.,National Center of Biotechnology, C/Darwin 3, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049, Madrid, Spain.,Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan.,JEOL YOKOGUSHI Research Alliance Laboratories, Osaka University, 1-3 Yamadaoka, Suita, Osaka, 565-0871, Japan. keiichi@fbs.osaka-u.ac.jp.,JEOL Ltd, 3-2-1 Musashino, Akishima, Tokyo, 196-8558, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Flagellar hook protein FlgE
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
402Salmonella entericaMutation(s): 0 
Gene Names: flgE
Find proteins for A0A0F7J7G7 (Salmonella enterica)
Go to UniProtKB:  A0A0F7J7G7
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.1 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Japan Society for the Promotion of Science (JSPS)Japan25000013
Japan Society for the Promotion of Science (JSPS)Japan18K06155
Japan Agency for Medical Research and Development (AMED)JapanJP19am0101117
Japan Agency for Medical Research and Development (AMED)JapanJP17pc0101020

Revision History 

  • Version 1.0: 2020-02-12
    Type: Initial release