7BK0

Salmonella FliF ring (34mer) in intact basal body - C1


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular structure of the intact bacterial flagellar basal body.

Johnson, S.Furlong, E.J.Deme, J.C.Nord, A.L.Caesar, J.J.E.Chevance, F.F.V.Berry, R.M.Hughes, K.T.Lea, S.M.

(2021) Nat Microbiol 6: 712-721

  • DOI: 10.1038/s41564-021-00895-y
  • Primary Citation of Related Structures:  
    7NVG, 7BGL, 7BHQ, 7BJ2, 7BIN, 7BK0

  • PubMed Abstract: 
  • The bacterial flagellum is a macromolecular protein complex that enables motility in many species. Bacterial flagella self-assemble a strong, multicomponent drive shaft that couples rotation in the inner membrane to the micrometre-long flagellar filament that powers bacterial swimming in viscous fluids 1-3 ...

    The bacterial flagellum is a macromolecular protein complex that enables motility in many species. Bacterial flagella self-assemble a strong, multicomponent drive shaft that couples rotation in the inner membrane to the micrometre-long flagellar filament that powers bacterial swimming in viscous fluids 1-3 . Here, we present structures of the intact Salmonella flagellar basal body 4 , encompassing the inner membrane rotor, drive shaft and outer-membrane bushing, solved using cryo-electron microscopy to resolutions of 2.2-3.7 Å. The structures reveal molecular details of how 173 protein molecules of 13 different types assemble into a complex spanning two membranes and a cell wall. The helical drive shaft at one end is intricately interwoven with the rotor component with both the export gate complex and the proximal rod forming interactions with the MS-ring. At the other end, the drive shaft distal rod passes through the LP-ring bushing complex, which functions as a molecular bearing anchored in the outer membrane through interactions with the lipopolysaccharide. The in situ structure of a protein complex capping the drive shaft provides molecular insights into the assembly process of this molecular machine.


    Organizational Affiliation

    Central Oxford Structural Molecular Imaging Centre, University of Oxford, Oxford, UK. susan.lea@path.ox.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar M-ring protein
A, B, C, D, E, F, G, H
560Salmonella enterica subsp. enterica serovar TyphimuriumMutation(s): 0 
UniProt
Find proteins for P15928 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Explore P15928 
Go to UniProtKB:  P15928
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Wellcome TrustUnited Kingdom219477
Wellcome TrustUnited Kingdom209194
Wellcome TrustUnited Kingdom201536
Medical Research Council (MRC, United Kingdom)United KingdomS021264

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-05
    Type: Initial release
  • Version 1.1: 2021-05-19
    Changes: Database references
  • Version 1.2: 2021-06-09
    Changes: Database references