7BJ2 | pdb_00007bj2

Salmonella flagellar basal body assembly intermediate - P ring alone structure

• PDB DOI: https://doi.org/10.2210/pdb7BJ2/pdb
• EM Map EMD-12193: EMDB EMDataResource

• Classification: PROTEIN TRANSPORT
• Organism(s): Salmonella enterica subsp. enterica serovar Typhimurium str. LT2
• Mutation(s): No 


• Deposited: 2021-01-13 Released: 2021-05-05 
• Deposition Author(s): Johnson, S., Furlong, E., Lea, S.M.
• Funding Organization(s): Wellcome Trust, Medical Research Council (MRC, United Kingdom)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

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

• PubMed: 33931760 
• DOI: https://doi.org/10.1038/s41564-021-00895-y
• Primary Citation Related Structures: 
  7BGL, 7BHQ, 7BIN, 7BJ2, 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 . 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.

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Organizational Affiliation: 
• Sir William Dunn School of Pathology, University of Oxford, Oxford, UK. [e-mail].
Center for Structural Biology, CCR, NCI, Frederick, MD, USA. [e-mail].
Sir William Dunn School of Pathology, University of Oxford, Oxford, UK.
Center for Structural Biology, CCR, NCI, Frederick, MD, USA.
Central Oxford Structural Molecular Imaging Centre, University of Oxford, Oxford, UK.
Department of Physics, University of Oxford, Oxford, UK.
Centre de Biologie Structurale, INSERM, CNRS, Université de Montpellier, Montpellier, France.
Department of Biology, University of Utah, Salt Lake City, UT, USA.
Sir William Dunn School of Pathology, University of Oxford, Oxford, UK. [e-mail].
Center for Structural Biology, CCR, NCI, Frederick, MD, USA. [e-mail].
Central Oxford Structural Molecular Imaging Centre, University of Oxford, Oxford, UK. [e-mail].

Biological Assembly 1  

Global Symmetry: Cyclic - C26  (Explore in 3D)
Global Stoichiometry: Homo 26-mer - A26 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 993.05 kDa 
• Atom Count: 58,552 
• Modeled Residue Count: 7,956 
• Deposited Residue Count: 9,490 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellar P-ring protein	A [auth a], B [auth b], C [auth c], D [auth d], E [auth e], F [auth f], G [auth g], H [auth h], I [auth i], J [auth j], K [auth k], L [auth l], M [auth m], N [auth n], O [auth o], P [auth p], Q [auth q], R [auth r], S [auth s], T [auth t], U [auth u], V [auth v], W [auth w], X [auth x], Y [auth y], Z [auth z]	365	Salmonella enterica subsp. enterica serovar Typhimurium str. LT2	Mutation(s): 0
UniProt
Find proteins for P15930 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)) Explore P15930  Go to UniProtKB:  P15930

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.00 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

EM Software:

Task	Software Package	Version
RECONSTRUCTION	RELION	3.1

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2021-05-05 
Deposition Author(s): Johnson, S., Furlong, E., Lea, S.M.

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Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	219477
Wellcome Trust	United Kingdom	209194
Wellcome Trust	United Kingdom	201536
Medical Research Council (MRC, United Kingdom)	United Kingdom	S021264

Revision History  

• 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
• Version 1.3: 2024-05-01
  Changes: Data collection, Database references