Biological Assembly 1  

 3D View: Structure | Validation Report

Global Symmetry: Helical - H  (3D View)
Global Stoichiometry: Homo 41-mer - A41 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: microscopy

Macromolecule Content

• Total Structure Weight: 1341.12 kDa 
• Atom Count: 92947 
• Modelled Residue Count: 12382 
• Deposited Residue Count: 12464 
• Unique protein chains: 1

5WJT

Cryo-EM structure of B. subtilis flagellar filaments N226Y

• DOI: 10.2210/pdb5WJT/pdb
• EMDataResource: EMD-8847

• Classification: PROTEIN FIBRIL
• Organism(s): Bacillus subtilis
• Expression System: Bacillus subtilis
• Mutation(s): Yes 


• Deposited: 2017-07-24 Released: 2017-10-25 
• Deposition Author(s): Wang, F., Burrage, A.M., Kearns, D.B., Egelman, E.H.
• Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Literature

A structural model of flagellar filament switching across multiple bacterial species.

Wang, F., Burrage, A.M., Postel, S., Clark, R.E., Orlova, A., Sundberg, E.J., Kearns, D.B., Egelman, E.H.

(2017) Nat Commun 8: 960-960

• PubMed: 29038601 
• DOI: 10.1038/s41467-017-01075-5
• Primary Citation of Related Structures:  
  5WJT, 5WJU, 5WJV, 5WJW, 5WJX, 5WJY, 5WJZ, 5WK5, 5WK6


• PubMed Abstract: 
  

The bacterial flagellar filament has long been studied to understand how a polymer composed of a single protein can switch between different supercoiled states with high cooperativity. Here we present near-atomic resolution cryo-EM structures for flagellar filaments from both Gram-positive Bacillus subtilis and Gram-negative Pseudomonas aeruginosa. Seven mutant flagellar filaments in B. subtilis and two in P. aeruginosa capture two different states of the filament. These reliable atomic models of both states reveal conserved molecular interactions in the interior of the filament among B. subtilis, P. aeruginosa and Salmonella enterica. Using the detailed information about the molecular interactions in two filament states, we successfully predict point mutations that shift the equilibrium between those two states. Further, we observe the dimerization of P. aeruginosa outer domains without any perturbation of the conserved interior of the filament. Our results give new insights into how the flagellin sequence has been "tuned" over evolution.Bacterial flagellar filaments are composed almost entirely of a single protein-flagellin-which can switch between different supercoiled states in a highly cooperative manner. Here the authors present near-atomic resolution cryo-EM structures of nine flagellar filaments, and begin to shed light on the molecular basis of filament switching.

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Organizational Affiliation: 

Department of Biochemistry and Molecular Genetics, University of Virginia School of Medicine, Charlottesville, VA, 22908, USA. [e-mail].

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Flagellin	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, AA [auth a], BA [auth b], CA [auth c], DA [auth d], EA [auth e], FA [auth f], GA [auth g], HA [auth h], IA [auth i], JA [auth j], KA [auth k], LA [auth l], MA [auth m], NA [auth n], OA [auth o]	304	Bacillus subtilis	Mutation(s): 2  Gene Names: B4417_3365
UniProt
Find proteins for P02968 (Bacillus subtilis (strain 168)) Explore P02968  Go to UniProtKB:  P02968

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.80 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-07-24 
• Released Date: 2017-10-25 
Deposition Author(s): Wang, F., Burrage, A.M., Kearns, D.B., Egelman, E.H.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM122510
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)	United States	GM093030

Revision History  

• Version 1.0: 2017-10-25
  Type: Initial release
  
• Version 1.1: 2017-11-01
  Changes: Database references
• Version 1.2: 2020-01-01
  Changes: Author supporting evidence