7BIN

Salmonella export gate and rod refined in focussed C1 map


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 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:  
    7BGL, 7BHQ, 7BJ2, 7BIN, 7BK0, 7NVG

  • 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
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar biosynthetic protein FliPA, B, C, D, E245Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
Gene Names: 
Membrane Entity: Yes 
UniProt
Find proteins for Q8Z5R3 (Salmonella typhi)
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar biosynthetic protein FliRF264Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for A0A3U0BCQ2 (Salmonella enterica I)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar biosynthetic protein FliQG, H, I, J89Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
Membrane Entity: Yes 
UniProt
Find proteins for A0A3Y0WXN7 (Salmonella enterica I)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar hook-basal body complex protein FliEK, L, M, N, O, P104Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
UniProt
Find proteins for P26462 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar basal body rod protein FlgBQ, R, S, T, U138Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
UniProt
Find proteins for P16437 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
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Entity ID: 6
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Flagellar basal-body rod protein FlgCV, W, X, Y, Z, AA [auth a]134Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
UniProt
Find proteins for P0A1I7 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar basal-body rod protein FlgFBA [auth b], CA [auth c], DA [auth d], EA [auth e], FA [auth f]251Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
UniProt
Find proteins for P16323 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar basal-body rod protein FlgG260Salmonella enterica subsp. enterica serovar TyphiMutation(s): 0 
UniProt
Find proteins for P0A1J3 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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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