5WRH

FlgG structure based on the CryoEM map of the bacterial flagellar polyrod


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

wwPDB Validation   3D Report Full Report



Literature

Identical folds used for distinct mechanical functions of the bacterial flagellar rod and hook.

Fujii, T.Kato, T.Hiraoka, K.D.Miyata, T.Minamino, T.Chevance, F.F.Hughes, K.T.Namba, K.

(2017) Nat Commun 8: 14276-14276

  • DOI: 10.1038/ncomms14276
  • Primary Citation of Related Structures:  
    5WRH

  • PubMed Abstract: 
  • The bacterial flagellum is a motile organelle driven by a rotary motor, and its axial portions function as a drive shaft (rod), a universal joint (hook) and a helical propeller (filament). The rod and hook are directly connected to each other, with t ...

    The bacterial flagellum is a motile organelle driven by a rotary motor, and its axial portions function as a drive shaft (rod), a universal joint (hook) and a helical propeller (filament). The rod and hook are directly connected to each other, with their subunit proteins FlgG and FlgE having 39% sequence identity, but show distinct mechanical properties; the rod is straight and rigid as a drive shaft whereas the hook is flexible in bending as a universal joint. Here we report the structure of the rod and comparison with that of the hook. While these two structures have the same helical symmetry and repeat distance and nearly identical folds of corresponding domains, the domain orientations differ by ∼7°, resulting in tight and loose axial subunit packing in the rod and hook, respectively, conferring the rigidity on the rod and flexibility on the hook. This provides a good example of versatile use of a protein structure in biological organisms.


    Organizational Affiliation

    Riken Quantitative Biology Center, 1-3 Yamadaoka, Suita, Osaka 565-0871, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Flagellar basal-body rod protein FlgGA260Salmonella enterica subsp. enterica serovar Typhimurium str. LT2Mutation(s): 0 
Gene Names: flgGfla FVIIflaLSTM1179
Find proteins for P0A1J3 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Explore P0A1J3 
Go to UniProtKB:  P0A1J3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 7.40 Å
  • Aggregation State: FILAMENT 
  • Reconstruction Method: HELICAL 

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 2016-12-02 
  • Released Date: 2017-02-08 
  • Deposition Author(s): Fujii, T., Namba, K.

Revision History 

  • Version 1.0: 2017-02-08
    Type: Initial release